/*!
 * jQuery JavaScript Library v1.12.4
 * http://jquery.com/
 *
 * Includes Sizzle.js
 * http://sizzlejs.com/
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2016-05-20T17:17Z
 */


(function( global, factory ) {

	if ( typeof module === "object" && typeof module.exports === "object" ) {
		// For CommonJS and CommonJS-like environments where a proper `window`
		// is present, execute the factory and get jQuery.
		// For environments that do not have a `window` with a `document`
		// (such as Node.js), expose a factory as module.exports.
		// This accentuates the need for the creation of a real `window`.
		// e.g. var jQuery = require("jquery")(window);
		// See ticket #14549 for more info.
		module.exports = global.document ?
			factory( global, true ) :
			function( w ) {
				if ( !w.document ) {
					throw new Error( "jQuery requires a window with a document" );
				}
				return factory( w );
			};
	} else {
		factory( global );
	}

// Pass this if window is not defined yet
}(typeof window !== "undefined" ? window : this, function( window, noGlobal ) {

// Support: Firefox 18+
// Can't be in strict mode, several libs including ASP.NET trace
// the stack via arguments.caller.callee and Firefox dies if
// you try to trace through "use strict" call chains. (#13335)
//"use strict";
var deletedIds = [];

var document = window.document;

var slice = deletedIds.slice;

var concat = deletedIds.concat;

var push = deletedIds.push;

var indexOf = deletedIds.indexOf;

var class2type = {};

var toString = class2type.toString;

var hasOwn = class2type.hasOwnProperty;

var support = {};



var
	version = "1.12.4",

	// Define a local copy of jQuery
	jQuery = function( selector, context ) {

		// The jQuery object is actually just the init constructor 'enhanced'
		// Need init if jQuery is called (just allow error to be thrown if not included)
		return new jQuery.fn.init( selector, context );
	},

	// Support: Android<4.1, IE<9
	// Make sure we trim BOM and NBSP
	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,

	// Matches dashed string for camelizing
	rmsPrefix = /^-ms-/,
	rdashAlpha = /-([\da-z])/gi,

	// Used by jQuery.camelCase as callback to replace()
	fcamelCase = function( all, letter ) {
		return letter.toUpperCase();
	};

jQuery.fn = jQuery.prototype = {

	// The current version of jQuery being used
	jquery: version,

	constructor: jQuery,

	// Start with an empty selector
	selector: "",

	// The default length of a jQuery object is 0
	length: 0,

	toArray: function() {
		return slice.call( this );
	},

	// Get the Nth element in the matched element set OR
	// Get the whole matched element set as a clean array
	get: function( num ) {
		return num != null ?

			// Return just the one element from the set
			( num < 0 ? this[ num + this.length ] : this[ num ] ) :

			// Return all the elements in a clean array
			slice.call( this );
	},

	// Take an array of elements and push it onto the stack
	// (returning the new matched element set)
	pushStack: function( elems ) {

		// Build a new jQuery matched element set
		var ret = jQuery.merge( this.constructor(), elems );

		// Add the old object onto the stack (as a reference)
		ret.prevObject = this;
		ret.context = this.context;

		// Return the newly-formed element set
		return ret;
	},

	// Execute a callback for every element in the matched set.
	each: function( callback ) {
		return jQuery.each( this, callback );
	},

	map: function( callback ) {
		return this.pushStack( jQuery.map( this, function( elem, i ) {
			return callback.call( elem, i, elem );
		} ) );
	},

	slice: function() {
		return this.pushStack( slice.apply( this, arguments ) );
	},

	first: function() {
		return this.eq( 0 );
	},

	last: function() {
		return this.eq( -1 );
	},

	eq: function( i ) {
		var len = this.length,
			j = +i + ( i < 0 ? len : 0 );
		return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
	},

	end: function() {
		return this.prevObject || this.constructor();
	},

	// For internal use only.
	// Behaves like an Array's method, not like a jQuery method.
	push: push,
	sort: deletedIds.sort,
	splice: deletedIds.splice
};

jQuery.extend = jQuery.fn.extend = function() {
	var src, copyIsArray, copy, name, options, clone,
		target = arguments[ 0 ] || {},
		i = 1,
		length = arguments.length,
		deep = false;

	// Handle a deep copy situation
	if ( typeof target === "boolean" ) {
		deep = target;

		// skip the boolean and the target
		target = arguments[ i ] || {};
		i++;
	}

	// Handle case when target is a string or something (possible in deep copy)
	if ( typeof target !== "object" && !jQuery.isFunction( target ) ) {
		target = {};
	}

	// extend jQuery itself if only one argument is passed
	if ( i === length ) {
		target = this;
		i--;
	}

	for ( ; i < length; i++ ) {

		// Only deal with non-null/undefined values
		if ( ( options = arguments[ i ] ) != null ) {

			// Extend the base object
			for ( name in options ) {
				src = target[ name ];
				copy = options[ name ];

				// Prevent never-ending loop
				if ( target === copy ) {
					continue;
				}

				// Recurse if we're merging plain objects or arrays
				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
					( copyIsArray = jQuery.isArray( copy ) ) ) ) {

					if ( copyIsArray ) {
						copyIsArray = false;
						clone = src && jQuery.isArray( src ) ? src : [];

					} else {
						clone = src && jQuery.isPlainObject( src ) ? src : {};
					}

					// Never move original objects, clone them
					target[ name ] = jQuery.extend( deep, clone, copy );

				// Don't bring in undefined values
				} else if ( copy !== undefined ) {
					target[ name ] = copy;
				}
			}
		}
	}

	// Return the modified object
	return target;
};

jQuery.extend( {

	// Unique for each copy of jQuery on the page
	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),

	// Assume jQuery is ready without the ready module
	isReady: true,

	error: function( msg ) {
		throw new Error( msg );
	},

	noop: function() {},

	// See test/unit/core.js for details concerning isFunction.
	// Since version 1.3, DOM methods and functions like alert
	// aren't supported. They return false on IE (#2968).
	isFunction: function( obj ) {
		return jQuery.type( obj ) === "function";
	},

	isArray: Array.isArray || function( obj ) {
		return jQuery.type( obj ) === "array";
	},

	isWindow: function( obj ) {
		/* jshint eqeqeq: false */
		return obj != null && obj == obj.window;
	},

	isNumeric: function( obj ) {

		// parseFloat NaNs numeric-cast false positives (null|true|false|"")
		// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
		// subtraction forces infinities to NaN
		// adding 1 corrects loss of precision from parseFloat (#15100)
		var realStringObj = obj && obj.toString();
		return !jQuery.isArray( obj ) && ( realStringObj - parseFloat( realStringObj ) + 1 ) >= 0;
	},

	isEmptyObject: function( obj ) {
		var name;
		for ( name in obj ) {
			return false;
		}
		return true;
	},

	isPlainObject: function( obj ) {
		var key;

		// Must be an Object.
		// Because of IE, we also have to check the presence of the constructor property.
		// Make sure that DOM nodes and window objects don't pass through, as well
		if ( !obj || jQuery.type( obj ) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
			return false;
		}

		try {

			// Not own constructor property must be Object
			if ( obj.constructor &&
				!hasOwn.call( obj, "constructor" ) &&
				!hasOwn.call( obj.constructor.prototype, "isPrototypeOf" ) ) {
				return false;
			}
		} catch ( e ) {

			// IE8,9 Will throw exceptions on certain host objects #9897
			return false;
		}

		// Support: IE<9
		// Handle iteration over inherited properties before own properties.
		if ( !support.ownFirst ) {
			for ( key in obj ) {
				return hasOwn.call( obj, key );
			}
		}

		// Own properties are enumerated firstly, so to speed up,
		// if last one is own, then all properties are own.
		for ( key in obj ) {}

		return key === undefined || hasOwn.call( obj, key );
	},

	type: function( obj ) {
		if ( obj == null ) {
			return obj + "";
		}
		return typeof obj === "object" || typeof obj === "function" ?
			class2type[ toString.call( obj ) ] || "object" :
			typeof obj;
	},

	// Workarounds based on findings by Jim Driscoll
	// http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context
	globalEval: function( data ) {
		if ( data && jQuery.trim( data ) ) {

			// We use execScript on Internet Explorer
			// We use an anonymous function so that context is window
			// rather than jQuery in Firefox
			( window.execScript || function( data ) {
				window[ "eval" ].call( window, data ); // jscs:ignore requireDotNotation
			} )( data );
		}
	},

	// Convert dashed to camelCase; used by the css and data modules
	// Microsoft forgot to hump their vendor prefix (#9572)
	camelCase: function( string ) {
		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
	},

	nodeName: function( elem, name ) {
		return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
	},

	each: function( obj, callback ) {
		var length, i = 0;

		if ( isArrayLike( obj ) ) {
			length = obj.length;
			for ( ; i < length; i++ ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		} else {
			for ( i in obj ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		}

		return obj;
	},

	// Support: Android<4.1, IE<9
	trim: function( text ) {
		return text == null ?
			"" :
			( text + "" ).replace( rtrim, "" );
	},

	// results is for internal usage only
	makeArray: function( arr, results ) {
		var ret = results || [];

		if ( arr != null ) {
			if ( isArrayLike( Object( arr ) ) ) {
				jQuery.merge( ret,
					typeof arr === "string" ?
					[ arr ] : arr
				);
			} else {
				push.call( ret, arr );
			}
		}

		return ret;
	},

	inArray: function( elem, arr, i ) {
		var len;

		if ( arr ) {
			if ( indexOf ) {
				return indexOf.call( arr, elem, i );
			}

			len = arr.length;
			i = i ? i < 0 ? Math.max( 0, len + i ) : i : 0;

			for ( ; i < len; i++ ) {

				// Skip accessing in sparse arrays
				if ( i in arr && arr[ i ] === elem ) {
					return i;
				}
			}
		}

		return -1;
	},

	merge: function( first, second ) {
		var len = +second.length,
			j = 0,
			i = first.length;

		while ( j < len ) {
			first[ i++ ] = second[ j++ ];
		}

		// Support: IE<9
		// Workaround casting of .length to NaN on otherwise arraylike objects (e.g., NodeLists)
		if ( len !== len ) {
			while ( second[ j ] !== undefined ) {
				first[ i++ ] = second[ j++ ];
			}
		}

		first.length = i;

		return first;
	},

	grep: function( elems, callback, invert ) {
		var callbackInverse,
			matches = [],
			i = 0,
			length = elems.length,
			callbackExpect = !invert;

		// Go through the array, only saving the items
		// that pass the validator function
		for ( ; i < length; i++ ) {
			callbackInverse = !callback( elems[ i ], i );
			if ( callbackInverse !== callbackExpect ) {
				matches.push( elems[ i ] );
			}
		}

		return matches;
	},

	// arg is for internal usage only
	map: function( elems, callback, arg ) {
		var length, value,
			i = 0,
			ret = [];

		// Go through the array, translating each of the items to their new values
		if ( isArrayLike( elems ) ) {
			length = elems.length;
			for ( ; i < length; i++ ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}

		// Go through every key on the object,
		} else {
			for ( i in elems ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}
		}

		// Flatten any nested arrays
		return concat.apply( [], ret );
	},

	// A global GUID counter for objects
	guid: 1,

	// Bind a function to a context, optionally partially applying any
	// arguments.
	proxy: function( fn, context ) {
		var args, proxy, tmp;

		if ( typeof context === "string" ) {
			tmp = fn[ context ];
			context = fn;
			fn = tmp;
		}

		// Quick check to determine if target is callable, in the spec
		// this throws a TypeError, but we will just return undefined.
		if ( !jQuery.isFunction( fn ) ) {
			return undefined;
		}

		// Simulated bind
		args = slice.call( arguments, 2 );
		proxy = function() {
			return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
		};

		// Set the guid of unique handler to the same of original handler, so it can be removed
		proxy.guid = fn.guid = fn.guid || jQuery.guid++;

		return proxy;
	},

	now: function() {
		return +( new Date() );
	},

	// jQuery.support is not used in Core but other projects attach their
	// properties to it so it needs to exist.
	support: support
} );

// JSHint would error on this code due to the Symbol not being defined in ES5.
// Defining this global in .jshintrc would create a danger of using the global
// unguarded in another place, it seems safer to just disable JSHint for these
// three lines.
/* jshint ignore: start */
if ( typeof Symbol === "function" ) {
	jQuery.fn[ Symbol.iterator ] = deletedIds[ Symbol.iterator ];
}
/* jshint ignore: end */

// Populate the class2type map
jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
function( i, name ) {
	class2type[ "[object " + name + "]" ] = name.toLowerCase();
} );

function isArrayLike( obj ) {

	// Support: iOS 8.2 (not reproducible in simulator)
	// `in` check used to prevent JIT error (gh-2145)
	// hasOwn isn't used here due to false negatives
	// regarding Nodelist length in IE
	var length = !!obj && "length" in obj && obj.length,
		type = jQuery.type( obj );

	if ( type === "function" || jQuery.isWindow( obj ) ) {
		return false;
	}

	return type === "array" || length === 0 ||
		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
}
var Sizzle =
/*!
 * Sizzle CSS Selector Engine v2.2.1
 * http://sizzlejs.com/
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2015-10-17
 */
(function( window ) {

var i,
	support,
	Expr,
	getText,
	isXML,
	tokenize,
	compile,
	select,
	outermostContext,
	sortInput,
	hasDuplicate,

	// Local document vars
	setDocument,
	document,
	docElem,
	documentIsHTML,
	rbuggyQSA,
	rbuggyMatches,
	matches,
	contains,

	// Instance-specific data
	expando = "sizzle" + 1 * new Date(),
	preferredDoc = window.document,
	dirruns = 0,
	done = 0,
	classCache = createCache(),
	tokenCache = createCache(),
	compilerCache = createCache(),
	sortOrder = function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
		}
		return 0;
	},

	// General-purpose constants
	MAX_NEGATIVE = 1 << 31,

	// Instance methods
	hasOwn = ({}).hasOwnProperty,
	arr = [],
	pop = arr.pop,
	push_native = arr.push,
	push = arr.push,
	slice = arr.slice,
	// Use a stripped-down indexOf as it's faster than native
	// http://jsperf.com/thor-indexof-vs-for/5
	indexOf = function( list, elem ) {
		var i = 0,
			len = list.length;
		for ( ; i < len; i++ ) {
			if ( list[i] === elem ) {
				return i;
			}
		}
		return -1;
	},

	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",

	// Regular expressions

	// http://www.w3.org/TR/css3-selectors/#whitespace
	whitespace = "[\\x20\\t\\r\\n\\f]",

	// http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
	identifier = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+",

	// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
	attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
		// Operator (capture 2)
		"*([*^$|!~]?=)" + whitespace +
		// "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
		"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
		"*\\]",

	pseudos = ":(" + identifier + ")(?:\\((" +
		// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
		// 1. quoted (capture 3; capture 4 or capture 5)
		"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
		// 2. simple (capture 6)
		"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
		// 3. anything else (capture 2)
		".*" +
		")\\)|)",

	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
	rwhitespace = new RegExp( whitespace + "+", "g" ),
	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),

	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),

	rpseudo = new RegExp( pseudos ),
	ridentifier = new RegExp( "^" + identifier + "$" ),

	matchExpr = {
		"ID": new RegExp( "^#(" + identifier + ")" ),
		"CLASS": new RegExp( "^\\.(" + identifier + ")" ),
		"TAG": new RegExp( "^(" + identifier + "|[*])" ),
		"ATTR": new RegExp( "^" + attributes ),
		"PSEUDO": new RegExp( "^" + pseudos ),
		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
		// For use in libraries implementing .is()
		// We use this for POS matching in `select`
		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
	},

	rinputs = /^(?:input|select|textarea|button)$/i,
	rheader = /^h\d$/i,

	rnative = /^[^{]+\{\s*\[native \w/,

	// Easily-parseable/retrievable ID or TAG or CLASS selectors
	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,

	rsibling = /[+~]/,
	rescape = /'|\\/g,

	// CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
	funescape = function( _, escaped, escapedWhitespace ) {
		var high = "0x" + escaped - 0x10000;
		// NaN means non-codepoint
		// Support: Firefox<24
		// Workaround erroneous numeric interpretation of +"0x"
		return high !== high || escapedWhitespace ?
			escaped :
			high < 0 ?
				// BMP codepoint
				String.fromCharCode( high + 0x10000 ) :
				// Supplemental Plane codepoint (surrogate pair)
				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
	},

	// Used for iframes
	// See setDocument()
	// Removing the function wrapper causes a "Permission Denied"
	// error in IE
	unloadHandler = function() {
		setDocument();
	};

// Optimize for push.apply( _, NodeList )
try {
	push.apply(
		(arr = slice.call( preferredDoc.childNodes )),
		preferredDoc.childNodes
	);
	// Support: Android<4.0
	// Detect silently failing push.apply
	arr[ preferredDoc.childNodes.length ].nodeType;
} catch ( e ) {
	push = { apply: arr.length ?

		// Leverage slice if possible
		function( target, els ) {
			push_native.apply( target, slice.call(els) );
		} :

		// Support: IE<9
		// Otherwise append directly
		function( target, els ) {
			var j = target.length,
				i = 0;
			// Can't trust NodeList.length
			while ( (target[j++] = els[i++]) ) {}
			target.length = j - 1;
		}
	};
}

function Sizzle( selector, context, results, seed ) {
	var m, i, elem, nid, nidselect, match, groups, newSelector,
		newContext = context && context.ownerDocument,

		// nodeType defaults to 9, since context defaults to document
		nodeType = context ? context.nodeType : 9;

	results = results || [];

	// Return early from calls with invalid selector or context
	if ( typeof selector !== "string" || !selector ||
		nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {

		return results;
	}

	// Try to shortcut find operations (as opposed to filters) in HTML documents
	if ( !seed ) {

		if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
			setDocument( context );
		}
		context = context || document;

		if ( documentIsHTML ) {

			// If the selector is sufficiently simple, try using a "get*By*" DOM method
			// (excepting DocumentFragment context, where the methods don't exist)
			if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) {

				// ID selector
				if ( (m = match[1]) ) {

					// Document context
					if ( nodeType === 9 ) {
						if ( (elem = context.getElementById( m )) ) {

							// Support: IE, Opera, Webkit
							// TODO: identify versions
							// getElementById can match elements by name instead of ID
							if ( elem.id === m ) {
								results.push( elem );
								return results;
							}
						} else {
							return results;
						}

					// Element context
					} else {

						// Support: IE, Opera, Webkit
						// TODO: identify versions
						// getElementById can match elements by name instead of ID
						if ( newContext && (elem = newContext.getElementById( m )) &&
							contains( context, elem ) &&
							elem.id === m ) {

							results.push( elem );
							return results;
						}
					}

				// Type selector
				} else if ( match[2] ) {
					push.apply( results, context.getElementsByTagName( selector ) );
					return results;

				// Class selector
				} else if ( (m = match[3]) && support.getElementsByClassName &&
					context.getElementsByClassName ) {

					push.apply( results, context.getElementsByClassName( m ) );
					return results;
				}
			}

			// Take advantage of querySelectorAll
			if ( support.qsa &&
				!compilerCache[ selector + " " ] &&
				(!rbuggyQSA || !rbuggyQSA.test( selector )) ) {

				if ( nodeType !== 1 ) {
					newContext = context;
					newSelector = selector;

				// qSA looks outside Element context, which is not what we want
				// Thanks to Andrew Dupont for this workaround technique
				// Support: IE <=8
				// Exclude object elements
				} else if ( context.nodeName.toLowerCase() !== "object" ) {

					// Capture the context ID, setting it first if necessary
					if ( (nid = context.getAttribute( "id" )) ) {
						nid = nid.replace( rescape, "\\$&" );
					} else {
						context.setAttribute( "id", (nid = expando) );
					}

					// Prefix every selector in the list
					groups = tokenize( selector );
					i = groups.length;
					nidselect = ridentifier.test( nid ) ? "#" + nid : "[id='" + nid + "']";
					while ( i-- ) {
						groups[i] = nidselect + " " + toSelector( groups[i] );
					}
					newSelector = groups.join( "," );

					// Expand context for sibling selectors
					newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
						context;
				}

				if ( newSelector ) {
					try {
						push.apply( results,
							newContext.querySelectorAll( newSelector )
						);
						return results;
					} catch ( qsaError ) {
					} finally {
						if ( nid === expando ) {
							context.removeAttribute( "id" );
						}
					}
				}
			}
		}
	}

	// All others
	return select( selector.replace( rtrim, "$1" ), context, results, seed );
}

/**
 * Create key-value caches of limited size
 * @returns {function(string, object)} Returns the Object data after storing it on itself with
 *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
 *	deleting the oldest entry
 */
function createCache() {
	var keys = [];

	function cache( key, value ) {
		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
		if ( keys.push( key + " " ) > Expr.cacheLength ) {
			// Only keep the most recent entries
			delete cache[ keys.shift() ];
		}
		return (cache[ key + " " ] = value);
	}
	return cache;
}

/**
 * Mark a function for special use by Sizzle
 * @param {Function} fn The function to mark
 */
function markFunction( fn ) {
	fn[ expando ] = true;
	return fn;
}

/**
 * Support testing using an element
 * @param {Function} fn Passed the created div and expects a boolean result
 */
function assert( fn ) {
	var div = document.createElement("div");

	try {
		return !!fn( div );
	} catch (e) {
		return false;
	} finally {
		// Remove from its parent by default
		if ( div.parentNode ) {
			div.parentNode.removeChild( div );
		}
		// release memory in IE
		div = null;
	}
}

/**
 * Adds the same handler for all of the specified attrs
 * @param {String} attrs Pipe-separated list of attributes
 * @param {Function} handler The method that will be applied
 */
function addHandle( attrs, handler ) {
	var arr = attrs.split("|"),
		i = arr.length;

	while ( i-- ) {
		Expr.attrHandle[ arr[i] ] = handler;
	}
}

/**
 * Checks document order of two siblings
 * @param {Element} a
 * @param {Element} b
 * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
 */
function siblingCheck( a, b ) {
	var cur = b && a,
		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
			( ~b.sourceIndex || MAX_NEGATIVE ) -
			( ~a.sourceIndex || MAX_NEGATIVE );

	// Use IE sourceIndex if available on both nodes
	if ( diff ) {
		return diff;
	}

	// Check if b follows a
	if ( cur ) {
		while ( (cur = cur.nextSibling) ) {
			if ( cur === b ) {
				return -1;
			}
		}
	}

	return a ? 1 : -1;
}

/**
 * Returns a function to use in pseudos for input types
 * @param {String} type
 */
function createInputPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return name === "input" && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for buttons
 * @param {String} type
 */
function createButtonPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return (name === "input" || name === "button") && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for positionals
 * @param {Function} fn
 */
function createPositionalPseudo( fn ) {
	return markFunction(function( argument ) {
		argument = +argument;
		return markFunction(function( seed, matches ) {
			var j,
				matchIndexes = fn( [], seed.length, argument ),
				i = matchIndexes.length;

			// Match elements found at the specified indexes
			while ( i-- ) {
				if ( seed[ (j = matchIndexes[i]) ] ) {
					seed[j] = !(matches[j] = seed[j]);
				}
			}
		});
	});
}

/**
 * Checks a node for validity as a Sizzle context
 * @param {Element|Object=} context
 * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
 */
function testContext( context ) {
	return context && typeof context.getElementsByTagName !== "undefined" && context;
}

// Expose support vars for convenience
support = Sizzle.support = {};

/**
 * Detects XML nodes
 * @param {Element|Object} elem An element or a document
 * @returns {Boolean} True iff elem is a non-HTML XML node
 */
isXML = Sizzle.isXML = function( elem ) {
	// documentElement is verified for cases where it doesn't yet exist
	// (such as loading iframes in IE - #4833)
	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

/**
 * Sets document-related variables once based on the current document
 * @param {Element|Object} [doc] An element or document object to use to set the document
 * @returns {Object} Returns the current document
 */
setDocument = Sizzle.setDocument = function( node ) {
	var hasCompare, parent,
		doc = node ? node.ownerDocument || node : preferredDoc;

	// Return early if doc is invalid or already selected
	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
		return document;
	}

	// Update global variables
	document = doc;
	docElem = document.documentElement;
	documentIsHTML = !isXML( document );

	// Support: IE 9-11, Edge
	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
	if ( (parent = document.defaultView) && parent.top !== parent ) {
		// Support: IE 11
		if ( parent.addEventListener ) {
			parent.addEventListener( "unload", unloadHandler, false );

		// Support: IE 9 - 10 only
		} else if ( parent.attachEvent ) {
			parent.attachEvent( "onunload", unloadHandler );
		}
	}

	/* Attributes
	---------------------------------------------------------------------- */

	// Support: IE<8
	// Verify that getAttribute really returns attributes and not properties
	// (excepting IE8 booleans)
	support.attributes = assert(function( div ) {
		div.className = "i";
		return !div.getAttribute("className");
	});

	/* getElement(s)By*
	---------------------------------------------------------------------- */

	// Check if getElementsByTagName("*") returns only elements
	support.getElementsByTagName = assert(function( div ) {
		div.appendChild( document.createComment("") );
		return !div.getElementsByTagName("*").length;
	});

	// Support: IE<9
	support.getElementsByClassName = rnative.test( document.getElementsByClassName );

	// Support: IE<10
	// Check if getElementById returns elements by name
	// The broken getElementById methods don't pick up programatically-set names,
	// so use a roundabout getElementsByName test
	support.getById = assert(function( div ) {
		docElem.appendChild( div ).id = expando;
		return !document.getElementsByName || !document.getElementsByName( expando ).length;
	});

	// ID find and filter
	if ( support.getById ) {
		Expr.find["ID"] = function( id, context ) {
			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
				var m = context.getElementById( id );
				return m ? [ m ] : [];
			}
		};
		Expr.filter["ID"] = function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				return elem.getAttribute("id") === attrId;
			};
		};
	} else {
		// Support: IE6/7
		// getElementById is not reliable as a find shortcut
		delete Expr.find["ID"];

		Expr.filter["ID"] =  function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				var node = typeof elem.getAttributeNode !== "undefined" &&
					elem.getAttributeNode("id");
				return node && node.value === attrId;
			};
		};
	}

	// Tag
	Expr.find["TAG"] = support.getElementsByTagName ?
		function( tag, context ) {
			if ( typeof context.getElementsByTagName !== "undefined" ) {
				return context.getElementsByTagName( tag );

			// DocumentFragment nodes don't have gEBTN
			} else if ( support.qsa ) {
				return context.querySelectorAll( tag );
			}
		} :

		function( tag, context ) {
			var elem,
				tmp = [],
				i = 0,
				// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
				results = context.getElementsByTagName( tag );

			// Filter out possible comments
			if ( tag === "*" ) {
				while ( (elem = results[i++]) ) {
					if ( elem.nodeType === 1 ) {
						tmp.push( elem );
					}
				}

				return tmp;
			}
			return results;
		};

	// Class
	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
		if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
			return context.getElementsByClassName( className );
		}
	};

	/* QSA/matchesSelector
	---------------------------------------------------------------------- */

	// QSA and matchesSelector support

	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
	rbuggyMatches = [];

	// qSa(:focus) reports false when true (Chrome 21)
	// We allow this because of a bug in IE8/9 that throws an error
	// whenever `document.activeElement` is accessed on an iframe
	// So, we allow :focus to pass through QSA all the time to avoid the IE error
	// See http://bugs.jquery.com/ticket/13378
	rbuggyQSA = [];

	if ( (support.qsa = rnative.test( document.querySelectorAll )) ) {
		// Build QSA regex
		// Regex strategy adopted from Diego Perini
		assert(function( div ) {
			// Select is set to empty string on purpose
			// This is to test IE's treatment of not explicitly
			// setting a boolean content attribute,
			// since its presence should be enough
			// http://bugs.jquery.com/ticket/12359
			docElem.appendChild( div ).innerHTML = "<a id='" + expando + "'></a>" +
				"<select id='" + expando + "-\r\\' msallowcapture=''>" +
				"<option selected=''></option></select>";

			// Support: IE8, Opera 11-12.16
			// Nothing should be selected when empty strings follow ^= or $= or *=
			// The test attribute must be unknown in Opera but "safe" for WinRT
			// http://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
			if ( div.querySelectorAll("[msallowcapture^='']").length ) {
				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
			}

			// Support: IE8
			// Boolean attributes and "value" are not treated correctly
			if ( !div.querySelectorAll("[selected]").length ) {
				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
			}

			// Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
			if ( !div.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
				rbuggyQSA.push("~=");
			}

			// Webkit/Opera - :checked should return selected option elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			// IE8 throws error here and will not see later tests
			if ( !div.querySelectorAll(":checked").length ) {
				rbuggyQSA.push(":checked");
			}

			// Support: Safari 8+, iOS 8+
			// https://bugs.webkit.org/show_bug.cgi?id=136851
			// In-page `selector#id sibing-combinator selector` fails
			if ( !div.querySelectorAll( "a#" + expando + "+*" ).length ) {
				rbuggyQSA.push(".#.+[+~]");
			}
		});

		assert(function( div ) {
			// Support: Windows 8 Native Apps
			// The type and name attributes are restricted during .innerHTML assignment
			var input = document.createElement("input");
			input.setAttribute( "type", "hidden" );
			div.appendChild( input ).setAttribute( "name", "D" );

			// Support: IE8
			// Enforce case-sensitivity of name attribute
			if ( div.querySelectorAll("[name=d]").length ) {
				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
			}

			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
			// IE8 throws error here and will not see later tests
			if ( !div.querySelectorAll(":enabled").length ) {
				rbuggyQSA.push( ":enabled", ":disabled" );
			}

			// Opera 10-11 does not throw on post-comma invalid pseudos
			div.querySelectorAll("*,:x");
			rbuggyQSA.push(",.*:");
		});
	}

	if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
		docElem.webkitMatchesSelector ||
		docElem.mozMatchesSelector ||
		docElem.oMatchesSelector ||
		docElem.msMatchesSelector) )) ) {

		assert(function( div ) {
			// Check to see if it's possible to do matchesSelector
			// on a disconnected node (IE 9)
			support.disconnectedMatch = matches.call( div, "div" );

			// This should fail with an exception
			// Gecko does not error, returns false instead
			matches.call( div, "[s!='']:x" );
			rbuggyMatches.push( "!=", pseudos );
		});
	}

	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );

	/* Contains
	---------------------------------------------------------------------- */
	hasCompare = rnative.test( docElem.compareDocumentPosition );

	// Element contains another
	// Purposefully self-exclusive
	// As in, an element does not contain itself
	contains = hasCompare || rnative.test( docElem.contains ) ?
		function( a, b ) {
			var adown = a.nodeType === 9 ? a.documentElement : a,
				bup = b && b.parentNode;
			return a === bup || !!( bup && bup.nodeType === 1 && (
				adown.contains ?
					adown.contains( bup ) :
					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
			));
		} :
		function( a, b ) {
			if ( b ) {
				while ( (b = b.parentNode) ) {
					if ( b === a ) {
						return true;
					}
				}
			}
			return false;
		};

	/* Sorting
	---------------------------------------------------------------------- */

	// Document order sorting
	sortOrder = hasCompare ?
	function( a, b ) {

		// Flag for duplicate removal
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		// Sort on method existence if only one input has compareDocumentPosition
		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
		if ( compare ) {
			return compare;
		}

		// Calculate position if both inputs belong to the same document
		compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
			a.compareDocumentPosition( b ) :

			// Otherwise we know they are disconnected
			1;

		// Disconnected nodes
		if ( compare & 1 ||
			(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {

			// Choose the first element that is related to our preferred document
			if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
				return -1;
			}
			if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
				return 1;
			}

			// Maintain original order
			return sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;
		}

		return compare & 4 ? -1 : 1;
	} :
	function( a, b ) {
		// Exit early if the nodes are identical
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		var cur,
			i = 0,
			aup = a.parentNode,
			bup = b.parentNode,
			ap = [ a ],
			bp = [ b ];

		// Parentless nodes are either documents or disconnected
		if ( !aup || !bup ) {
			return a === document ? -1 :
				b === document ? 1 :
				aup ? -1 :
				bup ? 1 :
				sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;

		// If the nodes are siblings, we can do a quick check
		} else if ( aup === bup ) {
			return siblingCheck( a, b );
		}

		// Otherwise we need full lists of their ancestors for comparison
		cur = a;
		while ( (cur = cur.parentNode) ) {
			ap.unshift( cur );
		}
		cur = b;
		while ( (cur = cur.parentNode) ) {
			bp.unshift( cur );
		}

		// Walk down the tree looking for a discrepancy
		while ( ap[i] === bp[i] ) {
			i++;
		}

		return i ?
			// Do a sibling check if the nodes have a common ancestor
			siblingCheck( ap[i], bp[i] ) :

			// Otherwise nodes in our document sort first
			ap[i] === preferredDoc ? -1 :
			bp[i] === preferredDoc ? 1 :
			0;
	};

	return document;
};

Sizzle.matches = function( expr, elements ) {
	return Sizzle( expr, null, null, elements );
};

Sizzle.matchesSelector = function( elem, expr ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	// Make sure that attribute selectors are quoted
	expr = expr.replace( rattributeQuotes, "='$1']" );

	if ( support.matchesSelector && documentIsHTML &&
		!compilerCache[ expr + " " ] &&
		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {

		try {
			var ret = matches.call( elem, expr );

			// IE 9's matchesSelector returns false on disconnected nodes
			if ( ret || support.disconnectedMatch ||
					// As well, disconnected nodes are said to be in a document
					// fragment in IE 9
					elem.document && elem.document.nodeType !== 11 ) {
				return ret;
			}
		} catch (e) {}
	}

	return Sizzle( expr, document, null, [ elem ] ).length > 0;
};

Sizzle.contains = function( context, elem ) {
	// Set document vars if needed
	if ( ( context.ownerDocument || context ) !== document ) {
		setDocument( context );
	}
	return contains( context, elem );
};

Sizzle.attr = function( elem, name ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	var fn = Expr.attrHandle[ name.toLowerCase() ],
		// Don't get fooled by Object.prototype properties (jQuery #13807)
		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
			fn( elem, name, !documentIsHTML ) :
			undefined;

	return val !== undefined ?
		val :
		support.attributes || !documentIsHTML ?
			elem.getAttribute( name ) :
			(val = elem.getAttributeNode(name)) && val.specified ?
				val.value :
				null;
};

Sizzle.error = function( msg ) {
	throw new Error( "Syntax error, unrecognized expression: " + msg );
};

/**
 * Document sorting and removing duplicates
 * @param {ArrayLike} results
 */
Sizzle.uniqueSort = function( results ) {
	var elem,
		duplicates = [],
		j = 0,
		i = 0;

	// Unless we *know* we can detect duplicates, assume their presence
	hasDuplicate = !support.detectDuplicates;
	sortInput = !support.sortStable && results.slice( 0 );
	results.sort( sortOrder );

	if ( hasDuplicate ) {
		while ( (elem = results[i++]) ) {
			if ( elem === results[ i ] ) {
				j = duplicates.push( i );
			}
		}
		while ( j-- ) {
			results.splice( duplicates[ j ], 1 );
		}
	}

	// Clear input after sorting to release objects
	// See https://github.com/jquery/sizzle/pull/225
	sortInput = null;

	return results;
};

/**
 * Utility function for retrieving the text value of an array of DOM nodes
 * @param {Array|Element} elem
 */
getText = Sizzle.getText = function( elem ) {
	var node,
		ret = "",
		i = 0,
		nodeType = elem.nodeType;

	if ( !nodeType ) {
		// If no nodeType, this is expected to be an array
		while ( (node = elem[i++]) ) {
			// Do not traverse comment nodes
			ret += getText( node );
		}
	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
		// Use textContent for elements
		// innerText usage removed for consistency of new lines (jQuery #11153)
		if ( typeof elem.textContent === "string" ) {
			return elem.textContent;
		} else {
			// Traverse its children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				ret += getText( elem );
			}
		}
	} else if ( nodeType === 3 || nodeType === 4 ) {
		return elem.nodeValue;
	}
	// Do not include comment or processing instruction nodes

	return ret;
};

Expr = Sizzle.selectors = {

	// Can be adjusted by the user
	cacheLength: 50,

	createPseudo: markFunction,

	match: matchExpr,

	attrHandle: {},

	find: {},

	relative: {
		">": { dir: "parentNode", first: true },
		" ": { dir: "parentNode" },
		"+": { dir: "previousSibling", first: true },
		"~": { dir: "previousSibling" }
	},

	preFilter: {
		"ATTR": function( match ) {
			match[1] = match[1].replace( runescape, funescape );

			// Move the given value to match[3] whether quoted or unquoted
			match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );

			if ( match[2] === "~=" ) {
				match[3] = " " + match[3] + " ";
			}

			return match.slice( 0, 4 );
		},

		"CHILD": function( match ) {
			/* matches from matchExpr["CHILD"]
				1 type (only|nth|...)
				2 what (child|of-type)
				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
				4 xn-component of xn+y argument ([+-]?\d*n|)
				5 sign of xn-component
				6 x of xn-component
				7 sign of y-component
				8 y of y-component
			*/
			match[1] = match[1].toLowerCase();

			if ( match[1].slice( 0, 3 ) === "nth" ) {
				// nth-* requires argument
				if ( !match[3] ) {
					Sizzle.error( match[0] );
				}

				// numeric x and y parameters for Expr.filter.CHILD
				// remember that false/true cast respectively to 0/1
				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );

			// other types prohibit arguments
			} else if ( match[3] ) {
				Sizzle.error( match[0] );
			}

			return match;
		},

		"PSEUDO": function( match ) {
			var excess,
				unquoted = !match[6] && match[2];

			if ( matchExpr["CHILD"].test( match[0] ) ) {
				return null;
			}

			// Accept quoted arguments as-is
			if ( match[3] ) {
				match[2] = match[4] || match[5] || "";

			// Strip excess characters from unquoted arguments
			} else if ( unquoted && rpseudo.test( unquoted ) &&
				// Get excess from tokenize (recursively)
				(excess = tokenize( unquoted, true )) &&
				// advance to the next closing parenthesis
				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

				// excess is a negative index
				match[0] = match[0].slice( 0, excess );
				match[2] = unquoted.slice( 0, excess );
			}

			// Return only captures needed by the pseudo filter method (type and argument)
			return match.slice( 0, 3 );
		}
	},

	filter: {

		"TAG": function( nodeNameSelector ) {
			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
			return nodeNameSelector === "*" ?
				function() { return true; } :
				function( elem ) {
					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
				};
		},

		"CLASS": function( className ) {
			var pattern = classCache[ className + " " ];

			return pattern ||
				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
				classCache( className, function( elem ) {
					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" );
				});
		},

		"ATTR": function( name, operator, check ) {
			return function( elem ) {
				var result = Sizzle.attr( elem, name );

				if ( result == null ) {
					return operator === "!=";
				}
				if ( !operator ) {
					return true;
				}

				result += "";

				return operator === "=" ? result === check :
					operator === "!=" ? result !== check :
					operator === "^=" ? check && result.indexOf( check ) === 0 :
					operator === "*=" ? check && result.indexOf( check ) > -1 :
					operator === "$=" ? check && result.slice( -check.length ) === check :
					operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
					false;
			};
		},

		"CHILD": function( type, what, argument, first, last ) {
			var simple = type.slice( 0, 3 ) !== "nth",
				forward = type.slice( -4 ) !== "last",
				ofType = what === "of-type";

			return first === 1 && last === 0 ?

				// Shortcut for :nth-*(n)
				function( elem ) {
					return !!elem.parentNode;
				} :

				function( elem, context, xml ) {
					var cache, uniqueCache, outerCache, node, nodeIndex, start,
						dir = simple !== forward ? "nextSibling" : "previousSibling",
						parent = elem.parentNode,
						name = ofType && elem.nodeName.toLowerCase(),
						useCache = !xml && !ofType,
						diff = false;

					if ( parent ) {

						// :(first|last|only)-(child|of-type)
						if ( simple ) {
							while ( dir ) {
								node = elem;
								while ( (node = node[ dir ]) ) {
									if ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) {

										return false;
									}
								}
								// Reverse direction for :only-* (if we haven't yet done so)
								start = dir = type === "only" && !start && "nextSibling";
							}
							return true;
						}

						start = [ forward ? parent.firstChild : parent.lastChild ];

						// non-xml :nth-child(...) stores cache data on `parent`
						if ( forward && useCache ) {

							// Seek `elem` from a previously-cached index

							// ...in a gzip-friendly way
							node = parent;
							outerCache = node[ expando ] || (node[ expando ] = {});

							// Support: IE <9 only
							// Defend against cloned attroperties (jQuery gh-1709)
							uniqueCache = outerCache[ node.uniqueID ] ||
								(outerCache[ node.uniqueID ] = {});

							cache = uniqueCache[ type ] || [];
							nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
							diff = nodeIndex && cache[ 2 ];
							node = nodeIndex && parent.childNodes[ nodeIndex ];

							while ( (node = ++nodeIndex && node && node[ dir ] ||

								// Fallback to seeking `elem` from the start
								(diff = nodeIndex = 0) || start.pop()) ) {

								// When found, cache indexes on `parent` and break
								if ( node.nodeType === 1 && ++diff && node === elem ) {
									uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
									break;
								}
							}

						} else {
							// Use previously-cached element index if available
							if ( useCache ) {
								// ...in a gzip-friendly way
								node = elem;
								outerCache = node[ expando ] || (node[ expando ] = {});

								// Support: IE <9 only
								// Defend against cloned attroperties (jQuery gh-1709)
								uniqueCache = outerCache[ node.uniqueID ] ||
									(outerCache[ node.uniqueID ] = {});

								cache = uniqueCache[ type ] || [];
								nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
								diff = nodeIndex;
							}

							// xml :nth-child(...)
							// or :nth-last-child(...) or :nth(-last)?-of-type(...)
							if ( diff === false ) {
								// Use the same loop as above to seek `elem` from the start
								while ( (node = ++nodeIndex && node && node[ dir ] ||
									(diff = nodeIndex = 0) || start.pop()) ) {

									if ( ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) &&
										++diff ) {

										// Cache the index of each encountered element
										if ( useCache ) {
											outerCache = node[ expando ] || (node[ expando ] = {});

											// Support: IE <9 only
											// Defend against cloned attroperties (jQuery gh-1709)
											uniqueCache = outerCache[ node.uniqueID ] ||
												(outerCache[ node.uniqueID ] = {});

											uniqueCache[ type ] = [ dirruns, diff ];
										}

										if ( node === elem ) {
											break;
										}
									}
								}
							}
						}

						// Incorporate the offset, then check against cycle size
						diff -= last;
						return diff === first || ( diff % first === 0 && diff / first >= 0 );
					}
				};
		},

		"PSEUDO": function( pseudo, argument ) {
			// pseudo-class names are case-insensitive
			// http://www.w3.org/TR/selectors/#pseudo-classes
			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
			// Remember that setFilters inherits from pseudos
			var args,
				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
					Sizzle.error( "unsupported pseudo: " + pseudo );

			// The user may use createPseudo to indicate that
			// arguments are needed to create the filter function
			// just as Sizzle does
			if ( fn[ expando ] ) {
				return fn( argument );
			}

			// But maintain support for old signatures
			if ( fn.length > 1 ) {
				args = [ pseudo, pseudo, "", argument ];
				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
					markFunction(function( seed, matches ) {
						var idx,
							matched = fn( seed, argument ),
							i = matched.length;
						while ( i-- ) {
							idx = indexOf( seed, matched[i] );
							seed[ idx ] = !( matches[ idx ] = matched[i] );
						}
					}) :
					function( elem ) {
						return fn( elem, 0, args );
					};
			}

			return fn;
		}
	},

	pseudos: {
		// Potentially complex pseudos
		"not": markFunction(function( selector ) {
			// Trim the selector passed to compile
			// to avoid treating leading and trailing
			// spaces as combinators
			var input = [],
				results = [],
				matcher = compile( selector.replace( rtrim, "$1" ) );

			return matcher[ expando ] ?
				markFunction(function( seed, matches, context, xml ) {
					var elem,
						unmatched = matcher( seed, null, xml, [] ),
						i = seed.length;

					// Match elements unmatched by `matcher`
					while ( i-- ) {
						if ( (elem = unmatched[i]) ) {
							seed[i] = !(matches[i] = elem);
						}
					}
				}) :
				function( elem, context, xml ) {
					input[0] = elem;
					matcher( input, null, xml, results );
					// Don't keep the element (issue #299)
					input[0] = null;
					return !results.pop();
				};
		}),

		"has": markFunction(function( selector ) {
			return function( elem ) {
				return Sizzle( selector, elem ).length > 0;
			};
		}),

		"contains": markFunction(function( text ) {
			text = text.replace( runescape, funescape );
			return function( elem ) {
				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
			};
		}),

		// "Whether an element is represented by a :lang() selector
		// is based solely on the element's language value
		// being equal to the identifier C,
		// or beginning with the identifier C immediately followed by "-".
		// The matching of C against the element's language value is performed case-insensitively.
		// The identifier C does not have to be a valid language name."
		// http://www.w3.org/TR/selectors/#lang-pseudo
		"lang": markFunction( function( lang ) {
			// lang value must be a valid identifier
			if ( !ridentifier.test(lang || "") ) {
				Sizzle.error( "unsupported lang: " + lang );
			}
			lang = lang.replace( runescape, funescape ).toLowerCase();
			return function( elem ) {
				var elemLang;
				do {
					if ( (elemLang = documentIsHTML ?
						elem.lang :
						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {

						elemLang = elemLang.toLowerCase();
						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
					}
				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
				return false;
			};
		}),

		// Miscellaneous
		"target": function( elem ) {
			var hash = window.location && window.location.hash;
			return hash && hash.slice( 1 ) === elem.id;
		},

		"root": function( elem ) {
			return elem === docElem;
		},

		"focus": function( elem ) {
			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
		},

		// Boolean properties
		"enabled": function( elem ) {
			return elem.disabled === false;
		},

		"disabled": function( elem ) {
			return elem.disabled === true;
		},

		"checked": function( elem ) {
			// In CSS3, :checked should return both checked and selected elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			var nodeName = elem.nodeName.toLowerCase();
			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
		},

		"selected": function( elem ) {
			// Accessing this property makes selected-by-default
			// options in Safari work properly
			if ( elem.parentNode ) {
				elem.parentNode.selectedIndex;
			}

			return elem.selected === true;
		},

		// Contents
		"empty": function( elem ) {
			// http://www.w3.org/TR/selectors/#empty-pseudo
			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
			//   but not by others (comment: 8; processing instruction: 7; etc.)
			// nodeType < 6 works because attributes (2) do not appear as children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				if ( elem.nodeType < 6 ) {
					return false;
				}
			}
			return true;
		},

		"parent": function( elem ) {
			return !Expr.pseudos["empty"]( elem );
		},

		// Element/input types
		"header": function( elem ) {
			return rheader.test( elem.nodeName );
		},

		"input": function( elem ) {
			return rinputs.test( elem.nodeName );
		},

		"button": function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return name === "input" && elem.type === "button" || name === "button";
		},

		"text": function( elem ) {
			var attr;
			return elem.nodeName.toLowerCase() === "input" &&
				elem.type === "text" &&

				// Support: IE<8
				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
		},

		// Position-in-collection
		"first": createPositionalPseudo(function() {
			return [ 0 ];
		}),

		"last": createPositionalPseudo(function( matchIndexes, length ) {
			return [ length - 1 ];
		}),

		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
			return [ argument < 0 ? argument + length : argument ];
		}),

		"even": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 0;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"odd": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 1;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; --i >= 0; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; ++i < length; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		})
	}
};

Expr.pseudos["nth"] = Expr.pseudos["eq"];

// Add button/input type pseudos
for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
	Expr.pseudos[ i ] = createInputPseudo( i );
}
for ( i in { submit: true, reset: true } ) {
	Expr.pseudos[ i ] = createButtonPseudo( i );
}

// Easy API for creating new setFilters
function setFilters() {}
setFilters.prototype = Expr.filters = Expr.pseudos;
Expr.setFilters = new setFilters();

tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
	var matched, match, tokens, type,
		soFar, groups, preFilters,
		cached = tokenCache[ selector + " " ];

	if ( cached ) {
		return parseOnly ? 0 : cached.slice( 0 );
	}

	soFar = selector;
	groups = [];
	preFilters = Expr.preFilter;

	while ( soFar ) {

		// Comma and first run
		if ( !matched || (match = rcomma.exec( soFar )) ) {
			if ( match ) {
				// Don't consume trailing commas as valid
				soFar = soFar.slice( match[0].length ) || soFar;
			}
			groups.push( (tokens = []) );
		}

		matched = false;

		// Combinators
		if ( (match = rcombinators.exec( soFar )) ) {
			matched = match.shift();
			tokens.push({
				value: matched,
				// Cast descendant combinators to space
				type: match[0].replace( rtrim, " " )
			});
			soFar = soFar.slice( matched.length );
		}

		// Filters
		for ( type in Expr.filter ) {
			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
				(match = preFilters[ type ]( match ))) ) {
				matched = match.shift();
				tokens.push({
					value: matched,
					type: type,
					matches: match
				});
				soFar = soFar.slice( matched.length );
			}
		}

		if ( !matched ) {
			break;
		}
	}

	// Return the length of the invalid excess
	// if we're just parsing
	// Otherwise, throw an error or return tokens
	return parseOnly ?
		soFar.length :
		soFar ?
			Sizzle.error( selector ) :
			// Cache the tokens
			tokenCache( selector, groups ).slice( 0 );
};

function toSelector( tokens ) {
	var i = 0,
		len = tokens.length,
		selector = "";
	for ( ; i < len; i++ ) {
		selector += tokens[i].value;
	}
	return selector;
}

function addCombinator( matcher, combinator, base ) {
	var dir = combinator.dir,
		checkNonElements = base && dir === "parentNode",
		doneName = done++;

	return combinator.first ?
		// Check against closest ancestor/preceding element
		function( elem, context, xml ) {
			while ( (elem = elem[ dir ]) ) {
				if ( elem.nodeType === 1 || checkNonElements ) {
					return matcher( elem, context, xml );
				}
			}
		} :

		// Check against all ancestor/preceding elements
		function( elem, context, xml ) {
			var oldCache, uniqueCache, outerCache,
				newCache = [ dirruns, doneName ];

			// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
			if ( xml ) {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						if ( matcher( elem, context, xml ) ) {
							return true;
						}
					}
				}
			} else {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						outerCache = elem[ expando ] || (elem[ expando ] = {});

						// Support: IE <9 only
						// Defend against cloned attroperties (jQuery gh-1709)
						uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {});

						if ( (oldCache = uniqueCache[ dir ]) &&
							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {

							// Assign to newCache so results back-propagate to previous elements
							return (newCache[ 2 ] = oldCache[ 2 ]);
						} else {
							// Reuse newcache so results back-propagate to previous elements
							uniqueCache[ dir ] = newCache;

							// A match means we're done; a fail means we have to keep checking
							if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
								return true;
							}
						}
					}
				}
			}
		};
}

function elementMatcher( matchers ) {
	return matchers.length > 1 ?
		function( elem, context, xml ) {
			var i = matchers.length;
			while ( i-- ) {
				if ( !matchers[i]( elem, context, xml ) ) {
					return false;
				}
			}
			return true;
		} :
		matchers[0];
}

function multipleContexts( selector, contexts, results ) {
	var i = 0,
		len = contexts.length;
	for ( ; i < len; i++ ) {
		Sizzle( selector, contexts[i], results );
	}
	return results;
}

function condense( unmatched, map, filter, context, xml ) {
	var elem,
		newUnmatched = [],
		i = 0,
		len = unmatched.length,
		mapped = map != null;

	for ( ; i < len; i++ ) {
		if ( (elem = unmatched[i]) ) {
			if ( !filter || filter( elem, context, xml ) ) {
				newUnmatched.push( elem );
				if ( mapped ) {
					map.push( i );
				}
			}
		}
	}

	return newUnmatched;
}

function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
	if ( postFilter && !postFilter[ expando ] ) {
		postFilter = setMatcher( postFilter );
	}
	if ( postFinder && !postFinder[ expando ] ) {
		postFinder = setMatcher( postFinder, postSelector );
	}
	return markFunction(function( seed, results, context, xml ) {
		var temp, i, elem,
			preMap = [],
			postMap = [],
			preexisting = results.length,

			// Get initial elements from seed or context
			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

			// Prefilter to get matcher input, preserving a map for seed-results synchronization
			matcherIn = preFilter && ( seed || !selector ) ?
				condense( elems, preMap, preFilter, context, xml ) :
				elems,

			matcherOut = matcher ?
				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

					// ...intermediate processing is necessary
					[] :

					// ...otherwise use results directly
					results :
				matcherIn;

		// Find primary matches
		if ( matcher ) {
			matcher( matcherIn, matcherOut, context, xml );
		}

		// Apply postFilter
		if ( postFilter ) {
			temp = condense( matcherOut, postMap );
			postFilter( temp, [], context, xml );

			// Un-match failing elements by moving them back to matcherIn
			i = temp.length;
			while ( i-- ) {
				if ( (elem = temp[i]) ) {
					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
				}
			}
		}

		if ( seed ) {
			if ( postFinder || preFilter ) {
				if ( postFinder ) {
					// Get the final matcherOut by condensing this intermediate into postFinder contexts
					temp = [];
					i = matcherOut.length;
					while ( i-- ) {
						if ( (elem = matcherOut[i]) ) {
							// Restore matcherIn since elem is not yet a final match
							temp.push( (matcherIn[i] = elem) );
						}
					}
					postFinder( null, (matcherOut = []), temp, xml );
				}

				// Move matched elements from seed to results to keep them synchronized
				i = matcherOut.length;
				while ( i-- ) {
					if ( (elem = matcherOut[i]) &&
						(temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) {

						seed[temp] = !(results[temp] = elem);
					}
				}
			}

		// Add elements to results, through postFinder if defined
		} else {
			matcherOut = condense(
				matcherOut === results ?
					matcherOut.splice( preexisting, matcherOut.length ) :
					matcherOut
			);
			if ( postFinder ) {
				postFinder( null, results, matcherOut, xml );
			} else {
				push.apply( results, matcherOut );
			}
		}
	});
}

function matcherFromTokens( tokens ) {
	var checkContext, matcher, j,
		len = tokens.length,
		leadingRelative = Expr.relative[ tokens[0].type ],
		implicitRelative = leadingRelative || Expr.relative[" "],
		i = leadingRelative ? 1 : 0,

		// The foundational matcher ensures that elements are reachable from top-level context(s)
		matchContext = addCombinator( function( elem ) {
			return elem === checkContext;
		}, implicitRelative, true ),
		matchAnyContext = addCombinator( function( elem ) {
			return indexOf( checkContext, elem ) > -1;
		}, implicitRelative, true ),
		matchers = [ function( elem, context, xml ) {
			var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
				(checkContext = context).nodeType ?
					matchContext( elem, context, xml ) :
					matchAnyContext( elem, context, xml ) );
			// Avoid hanging onto element (issue #299)
			checkContext = null;
			return ret;
		} ];

	for ( ; i < len; i++ ) {
		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
		} else {
			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

			// Return special upon seeing a positional matcher
			if ( matcher[ expando ] ) {
				// Find the next relative operator (if any) for proper handling
				j = ++i;
				for ( ; j < len; j++ ) {
					if ( Expr.relative[ tokens[j].type ] ) {
						break;
					}
				}
				return setMatcher(
					i > 1 && elementMatcher( matchers ),
					i > 1 && toSelector(
						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
					).replace( rtrim, "$1" ),
					matcher,
					i < j && matcherFromTokens( tokens.slice( i, j ) ),
					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
					j < len && toSelector( tokens )
				);
			}
			matchers.push( matcher );
		}
	}

	return elementMatcher( matchers );
}

function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
	var bySet = setMatchers.length > 0,
		byElement = elementMatchers.length > 0,
		superMatcher = function( seed, context, xml, results, outermost ) {
			var elem, j, matcher,
				matchedCount = 0,
				i = "0",
				unmatched = seed && [],
				setMatched = [],
				contextBackup = outermostContext,
				// We must always have either seed elements or outermost context
				elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
				// Use integer dirruns iff this is the outermost matcher
				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
				len = elems.length;

			if ( outermost ) {
				outermostContext = context === document || context || outermost;
			}

			// Add elements passing elementMatchers directly to results
			// Support: IE<9, Safari
			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
			for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
				if ( byElement && elem ) {
					j = 0;
					if ( !context && elem.ownerDocument !== document ) {
						setDocument( elem );
						xml = !documentIsHTML;
					}
					while ( (matcher = elementMatchers[j++]) ) {
						if ( matcher( elem, context || document, xml) ) {
							results.push( elem );
							break;
						}
					}
					if ( outermost ) {
						dirruns = dirrunsUnique;
					}
				}

				// Track unmatched elements for set filters
				if ( bySet ) {
					// They will have gone through all possible matchers
					if ( (elem = !matcher && elem) ) {
						matchedCount--;
					}

					// Lengthen the array for every element, matched or not
					if ( seed ) {
						unmatched.push( elem );
					}
				}
			}

			// `i` is now the count of elements visited above, and adding it to `matchedCount`
			// makes the latter nonnegative.
			matchedCount += i;

			// Apply set filters to unmatched elements
			// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
			// equals `i`), unless we didn't visit _any_ elements in the above loop because we have
			// no element matchers and no seed.
			// Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
			// case, which will result in a "00" `matchedCount` that differs from `i` but is also
			// numerically zero.
			if ( bySet && i !== matchedCount ) {
				j = 0;
				while ( (matcher = setMatchers[j++]) ) {
					matcher( unmatched, setMatched, context, xml );
				}

				if ( seed ) {
					// Reintegrate element matches to eliminate the need for sorting
					if ( matchedCount > 0 ) {
						while ( i-- ) {
							if ( !(unmatched[i] || setMatched[i]) ) {
								setMatched[i] = pop.call( results );
							}
						}
					}

					// Discard index placeholder values to get only actual matches
					setMatched = condense( setMatched );
				}

				// Add matches to results
				push.apply( results, setMatched );

				// Seedless set matches succeeding multiple successful matchers stipulate sorting
				if ( outermost && !seed && setMatched.length > 0 &&
					( matchedCount + setMatchers.length ) > 1 ) {

					Sizzle.uniqueSort( results );
				}
			}

			// Override manipulation of globals by nested matchers
			if ( outermost ) {
				dirruns = dirrunsUnique;
				outermostContext = contextBackup;
			}

			return unmatched;
		};

	return bySet ?
		markFunction( superMatcher ) :
		superMatcher;
}

compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
	var i,
		setMatchers = [],
		elementMatchers = [],
		cached = compilerCache[ selector + " " ];

	if ( !cached ) {
		// Generate a function of recursive functions that can be used to check each element
		if ( !match ) {
			match = tokenize( selector );
		}
		i = match.length;
		while ( i-- ) {
			cached = matcherFromTokens( match[i] );
			if ( cached[ expando ] ) {
				setMatchers.push( cached );
			} else {
				elementMatchers.push( cached );
			}
		}

		// Cache the compiled function
		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );

		// Save selector and tokenization
		cached.selector = selector;
	}
	return cached;
};

/**
 * A low-level selection function that works with Sizzle's compiled
 *  selector functions
 * @param {String|Function} selector A selector or a pre-compiled
 *  selector function built with Sizzle.compile
 * @param {Element} context
 * @param {Array} [results]
 * @param {Array} [seed] A set of elements to match against
 */
select = Sizzle.select = function( selector, context, results, seed ) {
	var i, tokens, token, type, find,
		compiled = typeof selector === "function" && selector,
		match = !seed && tokenize( (selector = compiled.selector || selector) );

	results = results || [];

	// Try to minimize operations if there is only one selector in the list and no seed
	// (the latter of which guarantees us context)
	if ( match.length === 1 ) {

		// Reduce context if the leading compound selector is an ID
		tokens = match[0] = match[0].slice( 0 );
		if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
				support.getById && context.nodeType === 9 && documentIsHTML &&
				Expr.relative[ tokens[1].type ] ) {

			context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
			if ( !context ) {
				return results;

			// Precompiled matchers will still verify ancestry, so step up a level
			} else if ( compiled ) {
				context = context.parentNode;
			}

			selector = selector.slice( tokens.shift().value.length );
		}

		// Fetch a seed set for right-to-left matching
		i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
		while ( i-- ) {
			token = tokens[i];

			// Abort if we hit a combinator
			if ( Expr.relative[ (type = token.type) ] ) {
				break;
			}
			if ( (find = Expr.find[ type ]) ) {
				// Search, expanding context for leading sibling combinators
				if ( (seed = find(
					token.matches[0].replace( runescape, funescape ),
					rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
				)) ) {

					// If seed is empty or no tokens remain, we can return early
					tokens.splice( i, 1 );
					selector = seed.length && toSelector( tokens );
					if ( !selector ) {
						push.apply( results, seed );
						return results;
					}

					break;
				}
			}
		}
	}

	// Compile and execute a filtering function if one is not provided
	// Provide `match` to avoid retokenization if we modified the selector above
	( compiled || compile( selector, match ) )(
		seed,
		context,
		!documentIsHTML,
		results,
		!context || rsibling.test( selector ) && testContext( context.parentNode ) || context
	);
	return results;
};

// One-time assignments

// Sort stability
support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;

// Support: Chrome 14-35+
// Always assume duplicates if they aren't passed to the comparison function
support.detectDuplicates = !!hasDuplicate;

// Initialize against the default document
setDocument();

// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
// Detached nodes confoundingly follow *each other*
support.sortDetached = assert(function( div1 ) {
	// Should return 1, but returns 4 (following)
	return div1.compareDocumentPosition( document.createElement("div") ) & 1;
});

// Support: IE<8
// Prevent attribute/property "interpolation"
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert(function( div ) {
	div.innerHTML = "<a href='#'></a>";
	return div.firstChild.getAttribute("href") === "#" ;
}) ) {
	addHandle( "type|href|height|width", function( elem, name, isXML ) {
		if ( !isXML ) {
			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
		}
	});
}

// Support: IE<9
// Use defaultValue in place of getAttribute("value")
if ( !support.attributes || !assert(function( div ) {
	div.innerHTML = "<input/>";
	div.firstChild.setAttribute( "value", "" );
	return div.firstChild.getAttribute( "value" ) === "";
}) ) {
	addHandle( "value", function( elem, name, isXML ) {
		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
			return elem.defaultValue;
		}
	});
}

// Support: IE<9
// Use getAttributeNode to fetch booleans when getAttribute lies
if ( !assert(function( div ) {
	return div.getAttribute("disabled") == null;
}) ) {
	addHandle( booleans, function( elem, name, isXML ) {
		var val;
		if ( !isXML ) {
			return elem[ name ] === true ? name.toLowerCase() :
					(val = elem.getAttributeNode( name )) && val.specified ?
					val.value :
				null;
		}
	});
}

return Sizzle;

})( window );



jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;
jQuery.expr[ ":" ] = jQuery.expr.pseudos;
jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
jQuery.text = Sizzle.getText;
jQuery.isXMLDoc = Sizzle.isXML;
jQuery.contains = Sizzle.contains;



var dir = function( elem, dir, until ) {
	var matched = [],
		truncate = until !== undefined;

	while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
		if ( elem.nodeType === 1 ) {
			if ( truncate && jQuery( elem ).is( until ) ) {
				break;
			}
			matched.push( elem );
		}
	}
	return matched;
};


var siblings = function( n, elem ) {
	var matched = [];

	for ( ; n; n = n.nextSibling ) {
		if ( n.nodeType === 1 && n !== elem ) {
			matched.push( n );
		}
	}

	return matched;
};


var rneedsContext = jQuery.expr.match.needsContext;

var rsingleTag = ( /^<([\w-]+)\s*\/?>(?:<\/\1>|)$/ );



var risSimple = /^.[^:#\[\.,]*$/;

// Implement the identical functionality for filter and not
function winnow( elements, qualifier, not ) {
	if ( jQuery.isFunction( qualifier ) ) {
		return jQuery.grep( elements, function( elem, i ) {
			/* jshint -W018 */
			return !!qualifier.call( elem, i, elem ) !== not;
		} );

	}

	if ( qualifier.nodeType ) {
		return jQuery.grep( elements, function( elem ) {
			return ( elem === qualifier ) !== not;
		} );

	}

	if ( typeof qualifier === "string" ) {
		if ( risSimple.test( qualifier ) ) {
			return jQuery.filter( qualifier, elements, not );
		}

		qualifier = jQuery.filter( qualifier, elements );
	}

	return jQuery.grep( elements, function( elem ) {
		return ( jQuery.inArray( elem, qualifier ) > -1 ) !== not;
	} );
}

jQuery.filter = function( expr, elems, not ) {
	var elem = elems[ 0 ];

	if ( not ) {
		expr = ":not(" + expr + ")";
	}

	return elems.length === 1 && elem.nodeType === 1 ?
		jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] :
		jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
			return elem.nodeType === 1;
		} ) );
};

jQuery.fn.extend( {
	find: function( selector ) {
		var i,
			ret = [],
			self = this,
			len = self.length;

		if ( typeof selector !== "string" ) {
			return this.pushStack( jQuery( selector ).filter( function() {
				for ( i = 0; i < len; i++ ) {
					if ( jQuery.contains( self[ i ], this ) ) {
						return true;
					}
				}
			} ) );
		}

		for ( i = 0; i < len; i++ ) {
			jQuery.find( selector, self[ i ], ret );
		}

		// Needed because $( selector, context ) becomes $( context ).find( selector )
		ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
		ret.selector = this.selector ? this.selector + " " + selector : selector;
		return ret;
	},
	filter: function( selector ) {
		return this.pushStack( winnow( this, selector || [], false ) );
	},
	not: function( selector ) {
		return this.pushStack( winnow( this, selector || [], true ) );
	},
	is: function( selector ) {
		return !!winnow(
			this,

			// If this is a positional/relative selector, check membership in the returned set
			// so $("p:first").is("p:last") won't return true for a doc with two "p".
			typeof selector === "string" && rneedsContext.test( selector ) ?
				jQuery( selector ) :
				selector || [],
			false
		).length;
	}
} );


// Initialize a jQuery object


// A central reference to the root jQuery(document)
var rootjQuery,

	// A simple way to check for HTML strings
	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
	// Strict HTML recognition (#11290: must start with <)
	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,

	init = jQuery.fn.init = function( selector, context, root ) {
		var match, elem;

		// HANDLE: $(""), $(null), $(undefined), $(false)
		if ( !selector ) {
			return this;
		}

		// init accepts an alternate rootjQuery
		// so migrate can support jQuery.sub (gh-2101)
		root = root || rootjQuery;

		// Handle HTML strings
		if ( typeof selector === "string" ) {
			if ( selector.charAt( 0 ) === "<" &&
				selector.charAt( selector.length - 1 ) === ">" &&
				selector.length >= 3 ) {

				// Assume that strings that start and end with <> are HTML and skip the regex check
				match = [ null, selector, null ];

			} else {
				match = rquickExpr.exec( selector );
			}

			// Match html or make sure no context is specified for #id
			if ( match && ( match[ 1 ] || !context ) ) {

				// HANDLE: $(html) -> $(array)
				if ( match[ 1 ] ) {
					context = context instanceof jQuery ? context[ 0 ] : context;

					// scripts is true for back-compat
					// Intentionally let the error be thrown if parseHTML is not present
					jQuery.merge( this, jQuery.parseHTML(
						match[ 1 ],
						context && context.nodeType ? context.ownerDocument || context : document,
						true
					) );

					// HANDLE: $(html, props)
					if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
						for ( match in context ) {

							// Properties of context are called as methods if possible
							if ( jQuery.isFunction( this[ match ] ) ) {
								this[ match ]( context[ match ] );

							// ...and otherwise set as attributes
							} else {
								this.attr( match, context[ match ] );
							}
						}
					}

					return this;

				// HANDLE: $(#id)
				} else {
					elem = document.getElementById( match[ 2 ] );

					// Check parentNode to catch when Blackberry 4.6 returns
					// nodes that are no longer in the document #6963
					if ( elem && elem.parentNode ) {

						// Handle the case where IE and Opera return items
						// by name instead of ID
						if ( elem.id !== match[ 2 ] ) {
							return rootjQuery.find( selector );
						}

						// Otherwise, we inject the element directly into the jQuery object
						this.length = 1;
						this[ 0 ] = elem;
					}

					this.context = document;
					this.selector = selector;
					return this;
				}

			// HANDLE: $(expr, $(...))
			} else if ( !context || context.jquery ) {
				return ( context || root ).find( selector );

			// HANDLE: $(expr, context)
			// (which is just equivalent to: $(context).find(expr)
			} else {
				return this.constructor( context ).find( selector );
			}

		// HANDLE: $(DOMElement)
		} else if ( selector.nodeType ) {
			this.context = this[ 0 ] = selector;
			this.length = 1;
			return this;

		// HANDLE: $(function)
		// Shortcut for document ready
		} else if ( jQuery.isFunction( selector ) ) {
			return typeof root.ready !== "undefined" ?
				root.ready( selector ) :

				// Execute immediately if ready is not present
				selector( jQuery );
		}

		if ( selector.selector !== undefined ) {
			this.selector = selector.selector;
			this.context = selector.context;
		}

		return jQuery.makeArray( selector, this );
	};

// Give the init function the jQuery prototype for later instantiation
init.prototype = jQuery.fn;

// Initialize central reference
rootjQuery = jQuery( document );


var rparentsprev = /^(?:parents|prev(?:Until|All))/,

	// methods guaranteed to produce a unique set when starting from a unique set
	guaranteedUnique = {
		children: true,
		contents: true,
		next: true,
		prev: true
	};

jQuery.fn.extend( {
	has: function( target ) {
		var i,
			targets = jQuery( target, this ),
			len = targets.length;

		return this.filter( function() {
			for ( i = 0; i < len; i++ ) {
				if ( jQuery.contains( this, targets[ i ] ) ) {
					return true;
				}
			}
		} );
	},

	closest: function( selectors, context ) {
		var cur,
			i = 0,
			l = this.length,
			matched = [],
			pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ?
				jQuery( selectors, context || this.context ) :
				0;

		for ( ; i < l; i++ ) {
			for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {

				// Always skip document fragments
				if ( cur.nodeType < 11 && ( pos ?
					pos.index( cur ) > -1 :

					// Don't pass non-elements to Sizzle
					cur.nodeType === 1 &&
						jQuery.find.matchesSelector( cur, selectors ) ) ) {

					matched.push( cur );
					break;
				}
			}
		}

		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
	},

	// Determine the position of an element within
	// the matched set of elements
	index: function( elem ) {

		// No argument, return index in parent
		if ( !elem ) {
			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
		}

		// index in selector
		if ( typeof elem === "string" ) {
			return jQuery.inArray( this[ 0 ], jQuery( elem ) );
		}

		// Locate the position of the desired element
		return jQuery.inArray(

			// If it receives a jQuery object, the first element is used
			elem.jquery ? elem[ 0 ] : elem, this );
	},

	add: function( selector, context ) {
		return this.pushStack(
			jQuery.uniqueSort(
				jQuery.merge( this.get(), jQuery( selector, context ) )
			)
		);
	},

	addBack: function( selector ) {
		return this.add( selector == null ?
			this.prevObject : this.prevObject.filter( selector )
		);
	}
} );

function sibling( cur, dir ) {
	do {
		cur = cur[ dir ];
	} while ( cur && cur.nodeType !== 1 );

	return cur;
}

jQuery.each( {
	parent: function( elem ) {
		var parent = elem.parentNode;
		return parent && parent.nodeType !== 11 ? parent : null;
	},
	parents: function( elem ) {
		return dir( elem, "parentNode" );
	},
	parentsUntil: function( elem, i, until ) {
		return dir( elem, "parentNode", until );
	},
	next: function( elem ) {
		return sibling( elem, "nextSibling" );
	},
	prev: function( elem ) {
		return sibling( elem, "previousSibling" );
	},
	nextAll: function( elem ) {
		return dir( elem, "nextSibling" );
	},
	prevAll: function( elem ) {
		return dir( elem, "previousSibling" );
	},
	nextUntil: function( elem, i, until ) {
		return dir( elem, "nextSibling", until );
	},
	prevUntil: function( elem, i, until ) {
		return dir( elem, "previousSibling", until );
	},
	siblings: function( elem ) {
		return siblings( ( elem.parentNode || {} ).firstChild, elem );
	},
	children: function( elem ) {
		return siblings( elem.firstChild );
	},
	contents: function( elem ) {
		return jQuery.nodeName( elem, "iframe" ) ?
			elem.contentDocument || elem.contentWindow.document :
			jQuery.merge( [], elem.childNodes );
	}
}, function( name, fn ) {
	jQuery.fn[ name ] = function( until, selector ) {
		var ret = jQuery.map( this, fn, until );

		if ( name.slice( -5 ) !== "Until" ) {
			selector = until;
		}

		if ( selector && typeof selector === "string" ) {
			ret = jQuery.filter( selector, ret );
		}

		if ( this.length > 1 ) {

			// Remove duplicates
			if ( !guaranteedUnique[ name ] ) {
				ret = jQuery.uniqueSort( ret );
			}

			// Reverse order for parents* and prev-derivatives
			if ( rparentsprev.test( name ) ) {
				ret = ret.reverse();
			}
		}

		return this.pushStack( ret );
	};
} );
var rnotwhite = ( /\S+/g );



// Convert String-formatted options into Object-formatted ones
function createOptions( options ) {
	var object = {};
	jQuery.each( options.match( rnotwhite ) || [], function( _, flag ) {
		object[ flag ] = true;
	} );
	return object;
}

/*
 * Create a callback list using the following parameters:
 *
 *	options: an optional list of space-separated options that will change how
 *			the callback list behaves or a more traditional option object
 *
 * By default a callback list will act like an event callback list and can be
 * "fired" multiple times.
 *
 * Possible options:
 *
 *	once:			will ensure the callback list can only be fired once (like a Deferred)
 *
 *	memory:			will keep track of previous values and will call any callback added
 *					after the list has been fired right away with the latest "memorized"
 *					values (like a Deferred)
 *
 *	unique:			will ensure a callback can only be added once (no duplicate in the list)
 *
 *	stopOnFalse:	interrupt callings when a callback returns false
 *
 */
jQuery.Callbacks = function( options ) {

	// Convert options from String-formatted to Object-formatted if needed
	// (we check in cache first)
	options = typeof options === "string" ?
		createOptions( options ) :
		jQuery.extend( {}, options );

	var // Flag to know if list is currently firing
		firing,

		// Last fire value for non-forgettable lists
		memory,

		// Flag to know if list was already fired
		fired,

		// Flag to prevent firing
		locked,

		// Actual callback list
		list = [],

		// Queue of execution data for repeatable lists
		queue = [],

		// Index of currently firing callback (modified by add/remove as needed)
		firingIndex = -1,

		// Fire callbacks
		fire = function() {

			// Enforce single-firing
			locked = options.once;

			// Execute callbacks for all pending executions,
			// respecting firingIndex overrides and runtime changes
			fired = firing = true;
			for ( ; queue.length; firingIndex = -1 ) {
				memory = queue.shift();
				while ( ++firingIndex < list.length ) {

					// Run callback and check for early termination
					if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
						options.stopOnFalse ) {

						// Jump to end and forget the data so .add doesn't re-fire
						firingIndex = list.length;
						memory = false;
					}
				}
			}

			// Forget the data if we're done with it
			if ( !options.memory ) {
				memory = false;
			}

			firing = false;

			// Clean up if we're done firing for good
			if ( locked ) {

				// Keep an empty list if we have data for future add calls
				if ( memory ) {
					list = [];

				// Otherwise, this object is spent
				} else {
					list = "";
				}
			}
		},

		// Actual Callbacks object
		self = {

			// Add a callback or a collection of callbacks to the list
			add: function() {
				if ( list ) {

					// If we have memory from a past run, we should fire after adding
					if ( memory && !firing ) {
						firingIndex = list.length - 1;
						queue.push( memory );
					}

					( function add( args ) {
						jQuery.each( args, function( _, arg ) {
							if ( jQuery.isFunction( arg ) ) {
								if ( !options.unique || !self.has( arg ) ) {
									list.push( arg );
								}
							} else if ( arg && arg.length && jQuery.type( arg ) !== "string" ) {

								// Inspect recursively
								add( arg );
							}
						} );
					} )( arguments );

					if ( memory && !firing ) {
						fire();
					}
				}
				return this;
			},

			// Remove a callback from the list
			remove: function() {
				jQuery.each( arguments, function( _, arg ) {
					var index;
					while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
						list.splice( index, 1 );

						// Handle firing indexes
						if ( index <= firingIndex ) {
							firingIndex--;
						}
					}
				} );
				return this;
			},

			// Check if a given callback is in the list.
			// If no argument is given, return whether or not list has callbacks attached.
			has: function( fn ) {
				return fn ?
					jQuery.inArray( fn, list ) > -1 :
					list.length > 0;
			},

			// Remove all callbacks from the list
			empty: function() {
				if ( list ) {
					list = [];
				}
				return this;
			},

			// Disable .fire and .add
			// Abort any current/pending executions
			// Clear all callbacks and values
			disable: function() {
				locked = queue = [];
				list = memory = "";
				return this;
			},
			disabled: function() {
				return !list;
			},

			// Disable .fire
			// Also disable .add unless we have memory (since it would have no effect)
			// Abort any pending executions
			lock: function() {
				locked = true;
				if ( !memory ) {
					self.disable();
				}
				return this;
			},
			locked: function() {
				return !!locked;
			},

			// Call all callbacks with the given context and arguments
			fireWith: function( context, args ) {
				if ( !locked ) {
					args = args || [];
					args = [ context, args.slice ? args.slice() : args ];
					queue.push( args );
					if ( !firing ) {
						fire();
					}
				}
				return this;
			},

			// Call all the callbacks with the given arguments
			fire: function() {
				self.fireWith( this, arguments );
				return this;
			},

			// To know if the callbacks have already been called at least once
			fired: function() {
				return !!fired;
			}
		};

	return self;
};


jQuery.extend( {

	Deferred: function( func ) {
		var tuples = [

				// action, add listener, listener list, final state
				[ "resolve", "done", jQuery.Callbacks( "once memory" ), "resolved" ],
				[ "reject", "fail", jQuery.Callbacks( "once memory" ), "rejected" ],
				[ "notify", "progress", jQuery.Callbacks( "memory" ) ]
			],
			state = "pending",
			promise = {
				state: function() {
					return state;
				},
				always: function() {
					deferred.done( arguments ).fail( arguments );
					return this;
				},
				then: function( /* fnDone, fnFail, fnProgress */ ) {
					var fns = arguments;
					return jQuery.Deferred( function( newDefer ) {
						jQuery.each( tuples, function( i, tuple ) {
							var fn = jQuery.isFunction( fns[ i ] ) && fns[ i ];

							// deferred[ done | fail | progress ] for forwarding actions to newDefer
							deferred[ tuple[ 1 ] ]( function() {
								var returned = fn && fn.apply( this, arguments );
								if ( returned && jQuery.isFunction( returned.promise ) ) {
									returned.promise()
										.progress( newDefer.notify )
										.done( newDefer.resolve )
										.fail( newDefer.reject );
								} else {
									newDefer[ tuple[ 0 ] + "With" ](
										this === promise ? newDefer.promise() : this,
										fn ? [ returned ] : arguments
									);
								}
							} );
						} );
						fns = null;
					} ).promise();
				},

				// Get a promise for this deferred
				// If obj is provided, the promise aspect is added to the object
				promise: function( obj ) {
					return obj != null ? jQuery.extend( obj, promise ) : promise;
				}
			},
			deferred = {};

		// Keep pipe for back-compat
		promise.pipe = promise.then;

		// Add list-specific methods
		jQuery.each( tuples, function( i, tuple ) {
			var list = tuple[ 2 ],
				stateString = tuple[ 3 ];

			// promise[ done | fail | progress ] = list.add
			promise[ tuple[ 1 ] ] = list.add;

			// Handle state
			if ( stateString ) {
				list.add( function() {

					// state = [ resolved | rejected ]
					state = stateString;

				// [ reject_list | resolve_list ].disable; progress_list.lock
				}, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock );
			}

			// deferred[ resolve | reject | notify ]
			deferred[ tuple[ 0 ] ] = function() {
				deferred[ tuple[ 0 ] + "With" ]( this === deferred ? promise : this, arguments );
				return this;
			};
			deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
		} );

		// Make the deferred a promise
		promise.promise( deferred );

		// Call given func if any
		if ( func ) {
			func.call( deferred, deferred );
		}

		// All done!
		return deferred;
	},

	// Deferred helper
	when: function( subordinate /* , ..., subordinateN */ ) {
		var i = 0,
			resolveValues = slice.call( arguments ),
			length = resolveValues.length,

			// the count of uncompleted subordinates
			remaining = length !== 1 ||
				( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0,

			// the master Deferred.
			// If resolveValues consist of only a single Deferred, just use that.
			deferred = remaining === 1 ? subordinate : jQuery.Deferred(),

			// Update function for both resolve and progress values
			updateFunc = function( i, contexts, values ) {
				return function( value ) {
					contexts[ i ] = this;
					values[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
					if ( values === progressValues ) {
						deferred.notifyWith( contexts, values );

					} else if ( !( --remaining ) ) {
						deferred.resolveWith( contexts, values );
					}
				};
			},

			progressValues, progressContexts, resolveContexts;

		// add listeners to Deferred subordinates; treat others as resolved
		if ( length > 1 ) {
			progressValues = new Array( length );
			progressContexts = new Array( length );
			resolveContexts = new Array( length );
			for ( ; i < length; i++ ) {
				if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) {
					resolveValues[ i ].promise()
						.progress( updateFunc( i, progressContexts, progressValues ) )
						.done( updateFunc( i, resolveContexts, resolveValues ) )
						.fail( deferred.reject );
				} else {
					--remaining;
				}
			}
		}

		// if we're not waiting on anything, resolve the master
		if ( !remaining ) {
			deferred.resolveWith( resolveContexts, resolveValues );
		}

		return deferred.promise();
	}
} );


// The deferred used on DOM ready
var readyList;

jQuery.fn.ready = function( fn ) {

	// Add the callback
	jQuery.ready.promise().done( fn );

	return this;
};

jQuery.extend( {

	// Is the DOM ready to be used? Set to true once it occurs.
	isReady: false,

	// A counter to track how many items to wait for before
	// the ready event fires. See #6781
	readyWait: 1,

	// Hold (or release) the ready event
	holdReady: function( hold ) {
		if ( hold ) {
			jQuery.readyWait++;
		} else {
			jQuery.ready( true );
		}
	},

	// Handle when the DOM is ready
	ready: function( wait ) {

		// Abort if there are pending holds or we're already ready
		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
			return;
		}

		// Remember that the DOM is ready
		jQuery.isReady = true;

		// If a normal DOM Ready event fired, decrement, and wait if need be
		if ( wait !== true && --jQuery.readyWait > 0 ) {
			return;
		}

		// If there are functions bound, to execute
		readyList.resolveWith( document, [ jQuery ] );

		// Trigger any bound ready events
		if ( jQuery.fn.triggerHandler ) {
			jQuery( document ).triggerHandler( "ready" );
			jQuery( document ).off( "ready" );
		}
	}
} );

/**
 * Clean-up method for dom ready events
 */
function detach() {
	if ( document.addEventListener ) {
		document.removeEventListener( "DOMContentLoaded", completed );
		window.removeEventListener( "load", completed );

	} else {
		document.detachEvent( "onreadystatechange", completed );
		window.detachEvent( "onload", completed );
	}
}

/**
 * The ready event handler and self cleanup method
 */
function completed() {

	// readyState === "complete" is good enough for us to call the dom ready in oldIE
	if ( document.addEventListener ||
		window.event.type === "load" ||
		document.readyState === "complete" ) {

		detach();
		jQuery.ready();
	}
}

jQuery.ready.promise = function( obj ) {
	if ( !readyList ) {

		readyList = jQuery.Deferred();

		// Catch cases where $(document).ready() is called
		// after the browser event has already occurred.
		// Support: IE6-10
		// Older IE sometimes signals "interactive" too soon
		if ( document.readyState === "complete" ||
			( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {

			// Handle it asynchronously to allow scripts the opportunity to delay ready
			window.setTimeout( jQuery.ready );

		// Standards-based browsers support DOMContentLoaded
		} else if ( document.addEventListener ) {

			// Use the handy event callback
			document.addEventListener( "DOMContentLoaded", completed );

			// A fallback to window.onload, that will always work
			window.addEventListener( "load", completed );

		// If IE event model is used
		} else {

			// Ensure firing before onload, maybe late but safe also for iframes
			document.attachEvent( "onreadystatechange", completed );

			// A fallback to window.onload, that will always work
			window.attachEvent( "onload", completed );

			// If IE and not a frame
			// continually check to see if the document is ready
			var top = false;

			try {
				top = window.frameElement == null && document.documentElement;
			} catch ( e ) {}

			if ( top && top.doScroll ) {
				( function doScrollCheck() {
					if ( !jQuery.isReady ) {

						try {

							// Use the trick by Diego Perini
							// http://javascript.nwbox.com/IEContentLoaded/
							top.doScroll( "left" );
						} catch ( e ) {
							return window.setTimeout( doScrollCheck, 50 );
						}

						// detach all dom ready events
						detach();

						// and execute any waiting functions
						jQuery.ready();
					}
				} )();
			}
		}
	}
	return readyList.promise( obj );
};

// Kick off the DOM ready check even if the user does not
jQuery.ready.promise();




// Support: IE<9
// Iteration over object's inherited properties before its own
var i;
for ( i in jQuery( support ) ) {
	break;
}
support.ownFirst = i === "0";

// Note: most support tests are defined in their respective modules.
// false until the test is run
support.inlineBlockNeedsLayout = false;

// Execute ASAP in case we need to set body.style.zoom
jQuery( function() {

	// Minified: var a,b,c,d
	var val, div, body, container;

	body = document.getElementsByTagName( "body" )[ 0 ];
	if ( !body || !body.style ) {

		// Return for frameset docs that don't have a body
		return;
	}

	// Setup
	div = document.createElement( "div" );
	container = document.createElement( "div" );
	container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
	body.appendChild( container ).appendChild( div );

	if ( typeof div.style.zoom !== "undefined" ) {

		// Support: IE<8
		// Check if natively block-level elements act like inline-block
		// elements when setting their display to 'inline' and giving
		// them layout
		div.style.cssText = "display:inline;margin:0;border:0;padding:1px;width:1px;zoom:1";

		support.inlineBlockNeedsLayout = val = div.offsetWidth === 3;
		if ( val ) {

			// Prevent IE 6 from affecting layout for positioned elements #11048
			// Prevent IE from shrinking the body in IE 7 mode #12869
			// Support: IE<8
			body.style.zoom = 1;
		}
	}

	body.removeChild( container );
} );


( function() {
	var div = document.createElement( "div" );

	// Support: IE<9
	support.deleteExpando = true;
	try {
		delete div.test;
	} catch ( e ) {
		support.deleteExpando = false;
	}

	// Null elements to avoid leaks in IE.
	div = null;
} )();
var acceptData = function( elem ) {
	var noData = jQuery.noData[ ( elem.nodeName + " " ).toLowerCase() ],
		nodeType = +elem.nodeType || 1;

	// Do not set data on non-element DOM nodes because it will not be cleared (#8335).
	return nodeType !== 1 && nodeType !== 9 ?
		false :

		// Nodes accept data unless otherwise specified; rejection can be conditional
		!noData || noData !== true && elem.getAttribute( "classid" ) === noData;
};




var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
	rmultiDash = /([A-Z])/g;

function dataAttr( elem, key, data ) {

	// If nothing was found internally, try to fetch any
	// data from the HTML5 data-* attribute
	if ( data === undefined && elem.nodeType === 1 ) {

		var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();

		data = elem.getAttribute( name );

		if ( typeof data === "string" ) {
			try {
				data = data === "true" ? true :
					data === "false" ? false :
					data === "null" ? null :

					// Only convert to a number if it doesn't change the string
					+data + "" === data ? +data :
					rbrace.test( data ) ? jQuery.parseJSON( data ) :
					data;
			} catch ( e ) {}

			// Make sure we set the data so it isn't changed later
			jQuery.data( elem, key, data );

		} else {
			data = undefined;
		}
	}

	return data;
}

// checks a cache object for emptiness
function isEmptyDataObject( obj ) {
	var name;
	for ( name in obj ) {

		// if the public data object is empty, the private is still empty
		if ( name === "data" && jQuery.isEmptyObject( obj[ name ] ) ) {
			continue;
		}
		if ( name !== "toJSON" ) {
			return false;
		}
	}

	return true;
}

function internalData( elem, name, data, pvt /* Internal Use Only */ ) {
	if ( !acceptData( elem ) ) {
		return;
	}

	var ret, thisCache,
		internalKey = jQuery.expando,

		// We have to handle DOM nodes and JS objects differently because IE6-7
		// can't GC object references properly across the DOM-JS boundary
		isNode = elem.nodeType,

		// Only DOM nodes need the global jQuery cache; JS object data is
		// attached directly to the object so GC can occur automatically
		cache = isNode ? jQuery.cache : elem,

		// Only defining an ID for JS objects if its cache already exists allows
		// the code to shortcut on the same path as a DOM node with no cache
		id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey;

	// Avoid doing any more work than we need to when trying to get data on an
	// object that has no data at all
	if ( ( !id || !cache[ id ] || ( !pvt && !cache[ id ].data ) ) &&
		data === undefined && typeof name === "string" ) {
		return;
	}

	if ( !id ) {

		// Only DOM nodes need a new unique ID for each element since their data
		// ends up in the global cache
		if ( isNode ) {
			id = elem[ internalKey ] = deletedIds.pop() || jQuery.guid++;
		} else {
			id = internalKey;
		}
	}

	if ( !cache[ id ] ) {

		// Avoid exposing jQuery metadata on plain JS objects when the object
		// is serialized using JSON.stringify
		cache[ id ] = isNode ? {} : { toJSON: jQuery.noop };
	}

	// An object can be passed to jQuery.data instead of a key/value pair; this gets
	// shallow copied over onto the existing cache
	if ( typeof name === "object" || typeof name === "function" ) {
		if ( pvt ) {
			cache[ id ] = jQuery.extend( cache[ id ], name );
		} else {
			cache[ id ].data = jQuery.extend( cache[ id ].data, name );
		}
	}

	thisCache = cache[ id ];

	// jQuery data() is stored in a separate object inside the object's internal data
	// cache in order to avoid key collisions between internal data and user-defined
	// data.
	if ( !pvt ) {
		if ( !thisCache.data ) {
			thisCache.data = {};
		}

		thisCache = thisCache.data;
	}

	if ( data !== undefined ) {
		thisCache[ jQuery.camelCase( name ) ] = data;
	}

	// Check for both converted-to-camel and non-converted data property names
	// If a data property was specified
	if ( typeof name === "string" ) {

		// First Try to find as-is property data
		ret = thisCache[ name ];

		// Test for null|undefined property data
		if ( ret == null ) {

			// Try to find the camelCased property
			ret = thisCache[ jQuery.camelCase( name ) ];
		}
	} else {
		ret = thisCache;
	}

	return ret;
}

function internalRemoveData( elem, name, pvt ) {
	if ( !acceptData( elem ) ) {
		return;
	}

	var thisCache, i,
		isNode = elem.nodeType,

		// See jQuery.data for more information
		cache = isNode ? jQuery.cache : elem,
		id = isNode ? elem[ jQuery.expando ] : jQuery.expando;

	// If there is already no cache entry for this object, there is no
	// purpose in continuing
	if ( !cache[ id ] ) {
		return;
	}

	if ( name ) {

		thisCache = pvt ? cache[ id ] : cache[ id ].data;

		if ( thisCache ) {

			// Support array or space separated string names for data keys
			if ( !jQuery.isArray( name ) ) {

				// try the string as a key before any manipulation
				if ( name in thisCache ) {
					name = [ name ];
				} else {

					// split the camel cased version by spaces unless a key with the spaces exists
					name = jQuery.camelCase( name );
					if ( name in thisCache ) {
						name = [ name ];
					} else {
						name = name.split( " " );
					}
				}
			} else {

				// If "name" is an array of keys...
				// When data is initially created, via ("key", "val") signature,
				// keys will be converted to camelCase.
				// Since there is no way to tell _how_ a key was added, remove
				// both plain key and camelCase key. #12786
				// This will only penalize the array argument path.
				name = name.concat( jQuery.map( name, jQuery.camelCase ) );
			}

			i = name.length;
			while ( i-- ) {
				delete thisCache[ name[ i ] ];
			}

			// If there is no data left in the cache, we want to continue
			// and let the cache object itself get destroyed
			if ( pvt ? !isEmptyDataObject( thisCache ) : !jQuery.isEmptyObject( thisCache ) ) {
				return;
			}
		}
	}

	// See jQuery.data for more information
	if ( !pvt ) {
		delete cache[ id ].data;

		// Don't destroy the parent cache unless the internal data object
		// had been the only thing left in it
		if ( !isEmptyDataObject( cache[ id ] ) ) {
			return;
		}
	}

	// Destroy the cache
	if ( isNode ) {
		jQuery.cleanData( [ elem ], true );

	// Use delete when supported for expandos or `cache` is not a window per isWindow (#10080)
	/* jshint eqeqeq: false */
	} else if ( support.deleteExpando || cache != cache.window ) {
		/* jshint eqeqeq: true */
		delete cache[ id ];

	// When all else fails, undefined
	} else {
		cache[ id ] = undefined;
	}
}

jQuery.extend( {
	cache: {},

	// The following elements (space-suffixed to avoid Object.prototype collisions)
	// throw uncatchable exceptions if you attempt to set expando properties
	noData: {
		"applet ": true,
		"embed ": true,

		// ...but Flash objects (which have this classid) *can* handle expandos
		"object ": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
	},

	hasData: function( elem ) {
		elem = elem.nodeType ? jQuery.cache[ elem[ jQuery.expando ] ] : elem[ jQuery.expando ];
		return !!elem && !isEmptyDataObject( elem );
	},

	data: function( elem, name, data ) {
		return internalData( elem, name, data );
	},

	removeData: function( elem, name ) {
		return internalRemoveData( elem, name );
	},

	// For internal use only.
	_data: function( elem, name, data ) {
		return internalData( elem, name, data, true );
	},

	_removeData: function( elem, name ) {
		return internalRemoveData( elem, name, true );
	}
} );

jQuery.fn.extend( {
	data: function( key, value ) {
		var i, name, data,
			elem = this[ 0 ],
			attrs = elem && elem.attributes;

		// Special expections of .data basically thwart jQuery.access,
		// so implement the relevant behavior ourselves

		// Gets all values
		if ( key === undefined ) {
			if ( this.length ) {
				data = jQuery.data( elem );

				if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) {
					i = attrs.length;
					while ( i-- ) {

						// Support: IE11+
						// The attrs elements can be null (#14894)
						if ( attrs[ i ] ) {
							name = attrs[ i ].name;
							if ( name.indexOf( "data-" ) === 0 ) {
								name = jQuery.camelCase( name.slice( 5 ) );
								dataAttr( elem, name, data[ name ] );
							}
						}
					}
					jQuery._data( elem, "parsedAttrs", true );
				}
			}

			return data;
		}

		// Sets multiple values
		if ( typeof key === "object" ) {
			return this.each( function() {
				jQuery.data( this, key );
			} );
		}

		return arguments.length > 1 ?

			// Sets one value
			this.each( function() {
				jQuery.data( this, key, value );
			} ) :

			// Gets one value
			// Try to fetch any internally stored data first
			elem ? dataAttr( elem, key, jQuery.data( elem, key ) ) : undefined;
	},

	removeData: function( key ) {
		return this.each( function() {
			jQuery.removeData( this, key );
		} );
	}
} );


jQuery.extend( {
	queue: function( elem, type, data ) {
		var queue;

		if ( elem ) {
			type = ( type || "fx" ) + "queue";
			queue = jQuery._data( elem, type );

			// Speed up dequeue by getting out quickly if this is just a lookup
			if ( data ) {
				if ( !queue || jQuery.isArray( data ) ) {
					queue = jQuery._data( elem, type, jQuery.makeArray( data ) );
				} else {
					queue.push( data );
				}
			}
			return queue || [];
		}
	},

	dequeue: function( elem, type ) {
		type = type || "fx";

		var queue = jQuery.queue( elem, type ),
			startLength = queue.length,
			fn = queue.shift(),
			hooks = jQuery._queueHooks( elem, type ),
			next = function() {
				jQuery.dequeue( elem, type );
			};

		// If the fx queue is dequeued, always remove the progress sentinel
		if ( fn === "inprogress" ) {
			fn = queue.shift();
			startLength--;
		}

		if ( fn ) {

			// Add a progress sentinel to prevent the fx queue from being
			// automatically dequeued
			if ( type === "fx" ) {
				queue.unshift( "inprogress" );
			}

			// clear up the last queue stop function
			delete hooks.stop;
			fn.call( elem, next, hooks );
		}

		if ( !startLength && hooks ) {
			hooks.empty.fire();
		}
	},

	// not intended for public consumption - generates a queueHooks object,
	// or returns the current one
	_queueHooks: function( elem, type ) {
		var key = type + "queueHooks";
		return jQuery._data( elem, key ) || jQuery._data( elem, key, {
			empty: jQuery.Callbacks( "once memory" ).add( function() {
				jQuery._removeData( elem, type + "queue" );
				jQuery._removeData( elem, key );
			} )
		} );
	}
} );

jQuery.fn.extend( {
	queue: function( type, data ) {
		var setter = 2;

		if ( typeof type !== "string" ) {
			data = type;
			type = "fx";
			setter--;
		}

		if ( arguments.length < setter ) {
			return jQuery.queue( this[ 0 ], type );
		}

		return data === undefined ?
			this :
			this.each( function() {
				var queue = jQuery.queue( this, type, data );

				// ensure a hooks for this queue
				jQuery._queueHooks( this, type );

				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
					jQuery.dequeue( this, type );
				}
			} );
	},
	dequeue: function( type ) {
		return this.each( function() {
			jQuery.dequeue( this, type );
		} );
	},
	clearQueue: function( type ) {
		return this.queue( type || "fx", [] );
	},

	// Get a promise resolved when queues of a certain type
	// are emptied (fx is the type by default)
	promise: function( type, obj ) {
		var tmp,
			count = 1,
			defer = jQuery.Deferred(),
			elements = this,
			i = this.length,
			resolve = function() {
				if ( !( --count ) ) {
					defer.resolveWith( elements, [ elements ] );
				}
			};

		if ( typeof type !== "string" ) {
			obj = type;
			type = undefined;
		}
		type = type || "fx";

		while ( i-- ) {
			tmp = jQuery._data( elements[ i ], type + "queueHooks" );
			if ( tmp && tmp.empty ) {
				count++;
				tmp.empty.add( resolve );
			}
		}
		resolve();
		return defer.promise( obj );
	}
} );


( function() {
	var shrinkWrapBlocksVal;

	support.shrinkWrapBlocks = function() {
		if ( shrinkWrapBlocksVal != null ) {
			return shrinkWrapBlocksVal;
		}

		// Will be changed later if needed.
		shrinkWrapBlocksVal = false;

		// Minified: var b,c,d
		var div, body, container;

		body = document.getElementsByTagName( "body" )[ 0 ];
		if ( !body || !body.style ) {

			// Test fired too early or in an unsupported environment, exit.
			return;
		}

		// Setup
		div = document.createElement( "div" );
		container = document.createElement( "div" );
		container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
		body.appendChild( container ).appendChild( div );

		// Support: IE6
		// Check if elements with layout shrink-wrap their children
		if ( typeof div.style.zoom !== "undefined" ) {

			// Reset CSS: box-sizing; display; margin; border
			div.style.cssText =

				// Support: Firefox<29, Android 2.3
				// Vendor-prefix box-sizing
				"-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
				"box-sizing:content-box;display:block;margin:0;border:0;" +
				"padding:1px;width:1px;zoom:1";
			div.appendChild( document.createElement( "div" ) ).style.width = "5px";
			shrinkWrapBlocksVal = div.offsetWidth !== 3;
		}

		body.removeChild( container );

		return shrinkWrapBlocksVal;
	};

} )();
var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;

var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );


var cssExpand = [ "Top", "Right", "Bottom", "Left" ];

var isHidden = function( elem, el ) {

		// isHidden might be called from jQuery#filter function;
		// in that case, element will be second argument
		elem = el || elem;
		return jQuery.css( elem, "display" ) === "none" ||
			!jQuery.contains( elem.ownerDocument, elem );
	};



function adjustCSS( elem, prop, valueParts, tween ) {
	var adjusted,
		scale = 1,
		maxIterations = 20,
		currentValue = tween ?
			function() { return tween.cur(); } :
			function() { return jQuery.css( elem, prop, "" ); },
		initial = currentValue(),
		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),

		// Starting value computation is required for potential unit mismatches
		initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
			rcssNum.exec( jQuery.css( elem, prop ) );

	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {

		// Trust units reported by jQuery.css
		unit = unit || initialInUnit[ 3 ];

		// Make sure we update the tween properties later on
		valueParts = valueParts || [];

		// Iteratively approximate from a nonzero starting point
		initialInUnit = +initial || 1;

		do {

			// If previous iteration zeroed out, double until we get *something*.
			// Use string for doubling so we don't accidentally see scale as unchanged below
			scale = scale || ".5";

			// Adjust and apply
			initialInUnit = initialInUnit / scale;
			jQuery.style( elem, prop, initialInUnit + unit );

		// Update scale, tolerating zero or NaN from tween.cur()
		// Break the loop if scale is unchanged or perfect, or if we've just had enough.
		} while (
			scale !== ( scale = currentValue() / initial ) && scale !== 1 && --maxIterations
		);
	}

	if ( valueParts ) {
		initialInUnit = +initialInUnit || +initial || 0;

		// Apply relative offset (+=/-=) if specified
		adjusted = valueParts[ 1 ] ?
			initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
			+valueParts[ 2 ];
		if ( tween ) {
			tween.unit = unit;
			tween.start = initialInUnit;
			tween.end = adjusted;
		}
	}
	return adjusted;
}


// Multifunctional method to get and set values of a collection
// The value/s can optionally be executed if it's a function
var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
	var i = 0,
		length = elems.length,
		bulk = key == null;

	// Sets many values
	if ( jQuery.type( key ) === "object" ) {
		chainable = true;
		for ( i in key ) {
			access( elems, fn, i, key[ i ], true, emptyGet, raw );
		}

	// Sets one value
	} else if ( value !== undefined ) {
		chainable = true;

		if ( !jQuery.isFunction( value ) ) {
			raw = true;
		}

		if ( bulk ) {

			// Bulk operations run against the entire set
			if ( raw ) {
				fn.call( elems, value );
				fn = null;

			// ...except when executing function values
			} else {
				bulk = fn;
				fn = function( elem, key, value ) {
					return bulk.call( jQuery( elem ), value );
				};
			}
		}

		if ( fn ) {
			for ( ; i < length; i++ ) {
				fn(
					elems[ i ],
					key,
					raw ? value : value.call( elems[ i ], i, fn( elems[ i ], key ) )
				);
			}
		}
	}

	return chainable ?
		elems :

		// Gets
		bulk ?
			fn.call( elems ) :
			length ? fn( elems[ 0 ], key ) : emptyGet;
};
var rcheckableType = ( /^(?:checkbox|radio)$/i );

var rtagName = ( /<([\w:-]+)/ );

var rscriptType = ( /^$|\/(?:java|ecma)script/i );

var rleadingWhitespace = ( /^\s+/ );

var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|" +
		"details|dialog|figcaption|figure|footer|header|hgroup|main|" +
		"mark|meter|nav|output|picture|progress|section|summary|template|time|video";



function createSafeFragment( document ) {
	var list = nodeNames.split( "|" ),
		safeFrag = document.createDocumentFragment();

	if ( safeFrag.createElement ) {
		while ( list.length ) {
			safeFrag.createElement(
				list.pop()
			);
		}
	}
	return safeFrag;
}


( function() {
	var div = document.createElement( "div" ),
		fragment = document.createDocumentFragment(),
		input = document.createElement( "input" );

	// Setup
	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";

	// IE strips leading whitespace when .innerHTML is used
	support.leadingWhitespace = div.firstChild.nodeType === 3;

	// Make sure that tbody elements aren't automatically inserted
	// IE will insert them into empty tables
	support.tbody = !div.getElementsByTagName( "tbody" ).length;

	// Make sure that link elements get serialized correctly by innerHTML
	// This requires a wrapper element in IE
	support.htmlSerialize = !!div.getElementsByTagName( "link" ).length;

	// Makes sure cloning an html5 element does not cause problems
	// Where outerHTML is undefined, this still works
	support.html5Clone =
		document.createElement( "nav" ).cloneNode( true ).outerHTML !== "<:nav></:nav>";

	// Check if a disconnected checkbox will retain its checked
	// value of true after appended to the DOM (IE6/7)
	input.type = "checkbox";
	input.checked = true;
	fragment.appendChild( input );
	support.appendChecked = input.checked;

	// Make sure textarea (and checkbox) defaultValue is properly cloned
	// Support: IE6-IE11+
	div.innerHTML = "<textarea>x</textarea>";
	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;

	// #11217 - WebKit loses check when the name is after the checked attribute
	fragment.appendChild( div );

	// Support: Windows Web Apps (WWA)
	// `name` and `type` must use .setAttribute for WWA (#14901)
	input = document.createElement( "input" );
	input.setAttribute( "type", "radio" );
	input.setAttribute( "checked", "checked" );
	input.setAttribute( "name", "t" );

	div.appendChild( input );

	// Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
	// old WebKit doesn't clone checked state correctly in fragments
	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;

	// Support: IE<9
	// Cloned elements keep attachEvent handlers, we use addEventListener on IE9+
	support.noCloneEvent = !!div.addEventListener;

	// Support: IE<9
	// Since attributes and properties are the same in IE,
	// cleanData must set properties to undefined rather than use removeAttribute
	div[ jQuery.expando ] = 1;
	support.attributes = !div.getAttribute( jQuery.expando );
} )();


// We have to close these tags to support XHTML (#13200)
var wrapMap = {
	option: [ 1, "<select multiple='multiple'>", "</select>" ],
	legend: [ 1, "<fieldset>", "</fieldset>" ],
	area: [ 1, "<map>", "</map>" ],

	// Support: IE8
	param: [ 1, "<object>", "</object>" ],
	thead: [ 1, "<table>", "</table>" ],
	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
	col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],

	// IE6-8 can't serialize link, script, style, or any html5 (NoScope) tags,
	// unless wrapped in a div with non-breaking characters in front of it.
	_default: support.htmlSerialize ? [ 0, "", "" ] : [ 1, "X<div>", "</div>" ]
};

// Support: IE8-IE9
wrapMap.optgroup = wrapMap.option;

wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;


function getAll( context, tag ) {
	var elems, elem,
		i = 0,
		found = typeof context.getElementsByTagName !== "undefined" ?
			context.getElementsByTagName( tag || "*" ) :
			typeof context.querySelectorAll !== "undefined" ?
				context.querySelectorAll( tag || "*" ) :
				undefined;

	if ( !found ) {
		for ( found = [], elems = context.childNodes || context;
			( elem = elems[ i ] ) != null;
			i++
		) {
			if ( !tag || jQuery.nodeName( elem, tag ) ) {
				found.push( elem );
			} else {
				jQuery.merge( found, getAll( elem, tag ) );
			}
		}
	}

	return tag === undefined || tag && jQuery.nodeName( context, tag ) ?
		jQuery.merge( [ context ], found ) :
		found;
}


// Mark scripts as having already been evaluated
function setGlobalEval( elems, refElements ) {
	var elem,
		i = 0;
	for ( ; ( elem = elems[ i ] ) != null; i++ ) {
		jQuery._data(
			elem,
			"globalEval",
			!refElements || jQuery._data( refElements[ i ], "globalEval" )
		);
	}
}


var rhtml = /<|&#?\w+;/,
	rtbody = /<tbody/i;

function fixDefaultChecked( elem ) {
	if ( rcheckableType.test( elem.type ) ) {
		elem.defaultChecked = elem.checked;
	}
}

function buildFragment( elems, context, scripts, selection, ignored ) {
	var j, elem, contains,
		tmp, tag, tbody, wrap,
		l = elems.length,

		// Ensure a safe fragment
		safe = createSafeFragment( context ),

		nodes = [],
		i = 0;

	for ( ; i < l; i++ ) {
		elem = elems[ i ];

		if ( elem || elem === 0 ) {

			// Add nodes directly
			if ( jQuery.type( elem ) === "object" ) {
				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );

			// Convert non-html into a text node
			} else if ( !rhtml.test( elem ) ) {
				nodes.push( context.createTextNode( elem ) );

			// Convert html into DOM nodes
			} else {
				tmp = tmp || safe.appendChild( context.createElement( "div" ) );

				// Deserialize a standard representation
				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
				wrap = wrapMap[ tag ] || wrapMap._default;

				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];

				// Descend through wrappers to the right content
				j = wrap[ 0 ];
				while ( j-- ) {
					tmp = tmp.lastChild;
				}

				// Manually add leading whitespace removed by IE
				if ( !support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
					nodes.push( context.createTextNode( rleadingWhitespace.exec( elem )[ 0 ] ) );
				}

				// Remove IE's autoinserted <tbody> from table fragments
				if ( !support.tbody ) {

					// String was a <table>, *may* have spurious <tbody>
					elem = tag === "table" && !rtbody.test( elem ) ?
						tmp.firstChild :

						// String was a bare <thead> or <tfoot>
						wrap[ 1 ] === "<table>" && !rtbody.test( elem ) ?
							tmp :
							0;

					j = elem && elem.childNodes.length;
					while ( j-- ) {
						if ( jQuery.nodeName( ( tbody = elem.childNodes[ j ] ), "tbody" ) &&
							!tbody.childNodes.length ) {

							elem.removeChild( tbody );
						}
					}
				}

				jQuery.merge( nodes, tmp.childNodes );

				// Fix #12392 for WebKit and IE > 9
				tmp.textContent = "";

				// Fix #12392 for oldIE
				while ( tmp.firstChild ) {
					tmp.removeChild( tmp.firstChild );
				}

				// Remember the top-level container for proper cleanup
				tmp = safe.lastChild;
			}
		}
	}

	// Fix #11356: Clear elements from fragment
	if ( tmp ) {
		safe.removeChild( tmp );
	}

	// Reset defaultChecked for any radios and checkboxes
	// about to be appended to the DOM in IE 6/7 (#8060)
	if ( !support.appendChecked ) {
		jQuery.grep( getAll( nodes, "input" ), fixDefaultChecked );
	}

	i = 0;
	while ( ( elem = nodes[ i++ ] ) ) {

		// Skip elements already in the context collection (trac-4087)
		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
			if ( ignored ) {
				ignored.push( elem );
			}

			continue;
		}

		contains = jQuery.contains( elem.ownerDocument, elem );

		// Append to fragment
		tmp = getAll( safe.appendChild( elem ), "script" );

		// Preserve script evaluation history
		if ( contains ) {
			setGlobalEval( tmp );
		}

		// Capture executables
		if ( scripts ) {
			j = 0;
			while ( ( elem = tmp[ j++ ] ) ) {
				if ( rscriptType.test( elem.type || "" ) ) {
					scripts.push( elem );
				}
			}
		}
	}

	tmp = null;

	return safe;
}


( function() {
	var i, eventName,
		div = document.createElement( "div" );

	// Support: IE<9 (lack submit/change bubble), Firefox (lack focus(in | out) events)
	for ( i in { submit: true, change: true, focusin: true } ) {
		eventName = "on" + i;

		if ( !( support[ i ] = eventName in window ) ) {

			// Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
			div.setAttribute( eventName, "t" );
			support[ i ] = div.attributes[ eventName ].expando === false;
		}
	}

	// Null elements to avoid leaks in IE.
	div = null;
} )();


var rformElems = /^(?:input|select|textarea)$/i,
	rkeyEvent = /^key/,
	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
	rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;

function returnTrue() {
	return true;
}

function returnFalse() {
	return false;
}

// Support: IE9
// See #13393 for more info
function safeActiveElement() {
	try {
		return document.activeElement;
	} catch ( err ) { }
}

function on( elem, types, selector, data, fn, one ) {
	var origFn, type;

	// Types can be a map of types/handlers
	if ( typeof types === "object" ) {

		// ( types-Object, selector, data )
		if ( typeof selector !== "string" ) {

			// ( types-Object, data )
			data = data || selector;
			selector = undefined;
		}
		for ( type in types ) {
			on( elem, type, selector, data, types[ type ], one );
		}
		return elem;
	}

	if ( data == null && fn == null ) {

		// ( types, fn )
		fn = selector;
		data = selector = undefined;
	} else if ( fn == null ) {
		if ( typeof selector === "string" ) {

			// ( types, selector, fn )
			fn = data;
			data = undefined;
		} else {

			// ( types, data, fn )
			fn = data;
			data = selector;
			selector = undefined;
		}
	}
	if ( fn === false ) {
		fn = returnFalse;
	} else if ( !fn ) {
		return elem;
	}

	if ( one === 1 ) {
		origFn = fn;
		fn = function( event ) {

			// Can use an empty set, since event contains the info
			jQuery().off( event );
			return origFn.apply( this, arguments );
		};

		// Use same guid so caller can remove using origFn
		fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
	}
	return elem.each( function() {
		jQuery.event.add( this, types, fn, data, selector );
	} );
}

/*
 * Helper functions for managing events -- not part of the public interface.
 * Props to Dean Edwards' addEvent library for many of the ideas.
 */
jQuery.event = {

	global: {},

	add: function( elem, types, handler, data, selector ) {
		var tmp, events, t, handleObjIn,
			special, eventHandle, handleObj,
			handlers, type, namespaces, origType,
			elemData = jQuery._data( elem );

		// Don't attach events to noData or text/comment nodes (but allow plain objects)
		if ( !elemData ) {
			return;
		}

		// Caller can pass in an object of custom data in lieu of the handler
		if ( handler.handler ) {
			handleObjIn = handler;
			handler = handleObjIn.handler;
			selector = handleObjIn.selector;
		}

		// Make sure that the handler has a unique ID, used to find/remove it later
		if ( !handler.guid ) {
			handler.guid = jQuery.guid++;
		}

		// Init the element's event structure and main handler, if this is the first
		if ( !( events = elemData.events ) ) {
			events = elemData.events = {};
		}
		if ( !( eventHandle = elemData.handle ) ) {
			eventHandle = elemData.handle = function( e ) {

				// Discard the second event of a jQuery.event.trigger() and
				// when an event is called after a page has unloaded
				return typeof jQuery !== "undefined" &&
					( !e || jQuery.event.triggered !== e.type ) ?
					jQuery.event.dispatch.apply( eventHandle.elem, arguments ) :
					undefined;
			};

			// Add elem as a property of the handle fn to prevent a memory leak
			// with IE non-native events
			eventHandle.elem = elem;
		}

		// Handle multiple events separated by a space
		types = ( types || "" ).match( rnotwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// There *must* be a type, no attaching namespace-only handlers
			if ( !type ) {
				continue;
			}

			// If event changes its type, use the special event handlers for the changed type
			special = jQuery.event.special[ type ] || {};

			// If selector defined, determine special event api type, otherwise given type
			type = ( selector ? special.delegateType : special.bindType ) || type;

			// Update special based on newly reset type
			special = jQuery.event.special[ type ] || {};

			// handleObj is passed to all event handlers
			handleObj = jQuery.extend( {
				type: type,
				origType: origType,
				data: data,
				handler: handler,
				guid: handler.guid,
				selector: selector,
				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
				namespace: namespaces.join( "." )
			}, handleObjIn );

			// Init the event handler queue if we're the first
			if ( !( handlers = events[ type ] ) ) {
				handlers = events[ type ] = [];
				handlers.delegateCount = 0;

				// Only use addEventListener/attachEvent if the special events handler returns false
				if ( !special.setup ||
					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {

					// Bind the global event handler to the element
					if ( elem.addEventListener ) {
						elem.addEventListener( type, eventHandle, false );

					} else if ( elem.attachEvent ) {
						elem.attachEvent( "on" + type, eventHandle );
					}
				}
			}

			if ( special.add ) {
				special.add.call( elem, handleObj );

				if ( !handleObj.handler.guid ) {
					handleObj.handler.guid = handler.guid;
				}
			}

			// Add to the element's handler list, delegates in front
			if ( selector ) {
				handlers.splice( handlers.delegateCount++, 0, handleObj );
			} else {
				handlers.push( handleObj );
			}

			// Keep track of which events have ever been used, for event optimization
			jQuery.event.global[ type ] = true;
		}

		// Nullify elem to prevent memory leaks in IE
		elem = null;
	},

	// Detach an event or set of events from an element
	remove: function( elem, types, handler, selector, mappedTypes ) {
		var j, handleObj, tmp,
			origCount, t, events,
			special, handlers, type,
			namespaces, origType,
			elemData = jQuery.hasData( elem ) && jQuery._data( elem );

		if ( !elemData || !( events = elemData.events ) ) {
			return;
		}

		// Once for each type.namespace in types; type may be omitted
		types = ( types || "" ).match( rnotwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// Unbind all events (on this namespace, if provided) for the element
			if ( !type ) {
				for ( type in events ) {
					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
				}
				continue;
			}

			special = jQuery.event.special[ type ] || {};
			type = ( selector ? special.delegateType : special.bindType ) || type;
			handlers = events[ type ] || [];
			tmp = tmp[ 2 ] &&
				new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );

			// Remove matching events
			origCount = j = handlers.length;
			while ( j-- ) {
				handleObj = handlers[ j ];

				if ( ( mappedTypes || origType === handleObj.origType ) &&
					( !handler || handler.guid === handleObj.guid ) &&
					( !tmp || tmp.test( handleObj.namespace ) ) &&
					( !selector || selector === handleObj.selector ||
						selector === "**" && handleObj.selector ) ) {
					handlers.splice( j, 1 );

					if ( handleObj.selector ) {
						handlers.delegateCount--;
					}
					if ( special.remove ) {
						special.remove.call( elem, handleObj );
					}
				}
			}

			// Remove generic event handler if we removed something and no more handlers exist
			// (avoids potential for endless recursion during removal of special event handlers)
			if ( origCount && !handlers.length ) {
				if ( !special.teardown ||
					special.teardown.call( elem, namespaces, elemData.handle ) === false ) {

					jQuery.removeEvent( elem, type, elemData.handle );
				}

				delete events[ type ];
			}
		}

		// Remove the expando if it's no longer used
		if ( jQuery.isEmptyObject( events ) ) {
			delete elemData.handle;

			// removeData also checks for emptiness and clears the expando if empty
			// so use it instead of delete
			jQuery._removeData( elem, "events" );
		}
	},

	trigger: function( event, data, elem, onlyHandlers ) {
		var handle, ontype, cur,
			bubbleType, special, tmp, i,
			eventPath = [ elem || document ],
			type = hasOwn.call( event, "type" ) ? event.type : event,
			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];

		cur = tmp = elem = elem || document;

		// Don't do events on text and comment nodes
		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
			return;
		}

		// focus/blur morphs to focusin/out; ensure we're not firing them right now
		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
			return;
		}

		if ( type.indexOf( "." ) > -1 ) {

			// Namespaced trigger; create a regexp to match event type in handle()
			namespaces = type.split( "." );
			type = namespaces.shift();
			namespaces.sort();
		}
		ontype = type.indexOf( ":" ) < 0 && "on" + type;

		// Caller can pass in a jQuery.Event object, Object, or just an event type string
		event = event[ jQuery.expando ] ?
			event :
			new jQuery.Event( type, typeof event === "object" && event );

		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
		event.isTrigger = onlyHandlers ? 2 : 3;
		event.namespace = namespaces.join( "." );
		event.rnamespace = event.namespace ?
			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
			null;

		// Clean up the event in case it is being reused
		event.result = undefined;
		if ( !event.target ) {
			event.target = elem;
		}

		// Clone any incoming data and prepend the event, creating the handler arg list
		data = data == null ?
			[ event ] :
			jQuery.makeArray( data, [ event ] );

		// Allow special events to draw outside the lines
		special = jQuery.event.special[ type ] || {};
		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
			return;
		}

		// Determine event propagation path in advance, per W3C events spec (#9951)
		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {

			bubbleType = special.delegateType || type;
			if ( !rfocusMorph.test( bubbleType + type ) ) {
				cur = cur.parentNode;
			}
			for ( ; cur; cur = cur.parentNode ) {
				eventPath.push( cur );
				tmp = cur;
			}

			// Only add window if we got to document (e.g., not plain obj or detached DOM)
			if ( tmp === ( elem.ownerDocument || document ) ) {
				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
			}
		}

		// Fire handlers on the event path
		i = 0;
		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {

			event.type = i > 1 ?
				bubbleType :
				special.bindType || type;

			// jQuery handler
			handle = ( jQuery._data( cur, "events" ) || {} )[ event.type ] &&
				jQuery._data( cur, "handle" );

			if ( handle ) {
				handle.apply( cur, data );
			}

			// Native handler
			handle = ontype && cur[ ontype ];
			if ( handle && handle.apply && acceptData( cur ) ) {
				event.result = handle.apply( cur, data );
				if ( event.result === false ) {
					event.preventDefault();
				}
			}
		}
		event.type = type;

		// If nobody prevented the default action, do it now
		if ( !onlyHandlers && !event.isDefaultPrevented() ) {

			if (
				( !special._default ||
				 special._default.apply( eventPath.pop(), data ) === false
				) && acceptData( elem )
			) {

				// Call a native DOM method on the target with the same name name as the event.
				// Can't use an .isFunction() check here because IE6/7 fails that test.
				// Don't do default actions on window, that's where global variables be (#6170)
				if ( ontype && elem[ type ] && !jQuery.isWindow( elem ) ) {

					// Don't re-trigger an onFOO event when we call its FOO() method
					tmp = elem[ ontype ];

					if ( tmp ) {
						elem[ ontype ] = null;
					}

					// Prevent re-triggering of the same event, since we already bubbled it above
					jQuery.event.triggered = type;
					try {
						elem[ type ]();
					} catch ( e ) {

						// IE<9 dies on focus/blur to hidden element (#1486,#12518)
						// only reproducible on winXP IE8 native, not IE9 in IE8 mode
					}
					jQuery.event.triggered = undefined;

					if ( tmp ) {
						elem[ ontype ] = tmp;
					}
				}
			}
		}

		return event.result;
	},

	dispatch: function( event ) {

		// Make a writable jQuery.Event from the native event object
		event = jQuery.event.fix( event );

		var i, j, ret, matched, handleObj,
			handlerQueue = [],
			args = slice.call( arguments ),
			handlers = ( jQuery._data( this, "events" ) || {} )[ event.type ] || [],
			special = jQuery.event.special[ event.type ] || {};

		// Use the fix-ed jQuery.Event rather than the (read-only) native event
		args[ 0 ] = event;
		event.delegateTarget = this;

		// Call the preDispatch hook for the mapped type, and let it bail if desired
		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
			return;
		}

		// Determine handlers
		handlerQueue = jQuery.event.handlers.call( this, event, handlers );

		// Run delegates first; they may want to stop propagation beneath us
		i = 0;
		while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
			event.currentTarget = matched.elem;

			j = 0;
			while ( ( handleObj = matched.handlers[ j++ ] ) &&
				!event.isImmediatePropagationStopped() ) {

				// Triggered event must either 1) have no namespace, or 2) have namespace(s)
				// a subset or equal to those in the bound event (both can have no namespace).
				if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {

					event.handleObj = handleObj;
					event.data = handleObj.data;

					ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
						handleObj.handler ).apply( matched.elem, args );

					if ( ret !== undefined ) {
						if ( ( event.result = ret ) === false ) {
							event.preventDefault();
							event.stopPropagation();
						}
					}
				}
			}
		}

		// Call the postDispatch hook for the mapped type
		if ( special.postDispatch ) {
			special.postDispatch.call( this, event );
		}

		return event.result;
	},

	handlers: function( event, handlers ) {
		var i, matches, sel, handleObj,
			handlerQueue = [],
			delegateCount = handlers.delegateCount,
			cur = event.target;

		// Support (at least): Chrome, IE9
		// Find delegate handlers
		// Black-hole SVG <use> instance trees (#13180)
		//
		// Support: Firefox<=42+
		// Avoid non-left-click in FF but don't block IE radio events (#3861, gh-2343)
		if ( delegateCount && cur.nodeType &&
			( event.type !== "click" || isNaN( event.button ) || event.button < 1 ) ) {

			/* jshint eqeqeq: false */
			for ( ; cur != this; cur = cur.parentNode || this ) {
				/* jshint eqeqeq: true */

				// Don't check non-elements (#13208)
				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
				if ( cur.nodeType === 1 && ( cur.disabled !== true || event.type !== "click" ) ) {
					matches = [];
					for ( i = 0; i < delegateCount; i++ ) {
						handleObj = handlers[ i ];

						// Don't conflict with Object.prototype properties (#13203)
						sel = handleObj.selector + " ";

						if ( matches[ sel ] === undefined ) {
							matches[ sel ] = handleObj.needsContext ?
								jQuery( sel, this ).index( cur ) > -1 :
								jQuery.find( sel, this, null, [ cur ] ).length;
						}
						if ( matches[ sel ] ) {
							matches.push( handleObj );
						}
					}
					if ( matches.length ) {
						handlerQueue.push( { elem: cur, handlers: matches } );
					}
				}
			}
		}

		// Add the remaining (directly-bound) handlers
		if ( delegateCount < handlers.length ) {
			handlerQueue.push( { elem: this, handlers: handlers.slice( delegateCount ) } );
		}

		return handlerQueue;
	},

	fix: function( event ) {
		if ( event[ jQuery.expando ] ) {
			return event;
		}

		// Create a writable copy of the event object and normalize some properties
		var i, prop, copy,
			type = event.type,
			originalEvent = event,
			fixHook = this.fixHooks[ type ];

		if ( !fixHook ) {
			this.fixHooks[ type ] = fixHook =
				rmouseEvent.test( type ) ? this.mouseHooks :
				rkeyEvent.test( type ) ? this.keyHooks :
				{};
		}
		copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;

		event = new jQuery.Event( originalEvent );

		i = copy.length;
		while ( i-- ) {
			prop = copy[ i ];
			event[ prop ] = originalEvent[ prop ];
		}

		// Support: IE<9
		// Fix target property (#1925)
		if ( !event.target ) {
			event.target = originalEvent.srcElement || document;
		}

		// Support: Safari 6-8+
		// Target should not be a text node (#504, #13143)
		if ( event.target.nodeType === 3 ) {
			event.target = event.target.parentNode;
		}

		// Support: IE<9
		// For mouse/key events, metaKey==false if it's undefined (#3368, #11328)
		event.metaKey = !!event.metaKey;

		return fixHook.filter ? fixHook.filter( event, originalEvent ) : event;
	},

	// Includes some event props shared by KeyEvent and MouseEvent
	props: ( "altKey bubbles cancelable ctrlKey currentTarget detail eventPhase " +
		"metaKey relatedTarget shiftKey target timeStamp view which" ).split( " " ),

	fixHooks: {},

	keyHooks: {
		props: "char charCode key keyCode".split( " " ),
		filter: function( event, original ) {

			// Add which for key events
			if ( event.which == null ) {
				event.which = original.charCode != null ? original.charCode : original.keyCode;
			}

			return event;
		}
	},

	mouseHooks: {
		props: ( "button buttons clientX clientY fromElement offsetX offsetY " +
			"pageX pageY screenX screenY toElement" ).split( " " ),
		filter: function( event, original ) {
			var body, eventDoc, doc,
				button = original.button,
				fromElement = original.fromElement;

			// Calculate pageX/Y if missing and clientX/Y available
			if ( event.pageX == null && original.clientX != null ) {
				eventDoc = event.target.ownerDocument || document;
				doc = eventDoc.documentElement;
				body = eventDoc.body;

				event.pageX = original.clientX +
					( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) -
					( doc && doc.clientLeft || body && body.clientLeft || 0 );
				event.pageY = original.clientY +
					( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) -
					( doc && doc.clientTop  || body && body.clientTop  || 0 );
			}

			// Add relatedTarget, if necessary
			if ( !event.relatedTarget && fromElement ) {
				event.relatedTarget = fromElement === event.target ?
					original.toElement :
					fromElement;
			}

			// Add which for click: 1 === left; 2 === middle; 3 === right
			// Note: button is not normalized, so don't use it
			if ( !event.which && button !== undefined ) {
				event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
			}

			return event;
		}
	},

	special: {
		load: {

			// Prevent triggered image.load events from bubbling to window.load
			noBubble: true
		},
		focus: {

			// Fire native event if possible so blur/focus sequence is correct
			trigger: function() {
				if ( this !== safeActiveElement() && this.focus ) {
					try {
						this.focus();
						return false;
					} catch ( e ) {

						// Support: IE<9
						// If we error on focus to hidden element (#1486, #12518),
						// let .trigger() run the handlers
					}
				}
			},
			delegateType: "focusin"
		},
		blur: {
			trigger: function() {
				if ( this === safeActiveElement() && this.blur ) {
					this.blur();
					return false;
				}
			},
			delegateType: "focusout"
		},
		click: {

			// For checkbox, fire native event so checked state will be right
			trigger: function() {
				if ( jQuery.nodeName( this, "input" ) && this.type === "checkbox" && this.click ) {
					this.click();
					return false;
				}
			},

			// For cross-browser consistency, don't fire native .click() on links
			_default: function( event ) {
				return jQuery.nodeName( event.target, "a" );
			}
		},

		beforeunload: {
			postDispatch: function( event ) {

				// Support: Firefox 20+
				// Firefox doesn't alert if the returnValue field is not set.
				if ( event.result !== undefined && event.originalEvent ) {
					event.originalEvent.returnValue = event.result;
				}
			}
		}
	},

	// Piggyback on a donor event to simulate a different one
	simulate: function( type, elem, event ) {
		var e = jQuery.extend(
			new jQuery.Event(),
			event,
			{
				type: type,
				isSimulated: true

				// Previously, `originalEvent: {}` was set here, so stopPropagation call
				// would not be triggered on donor event, since in our own
				// jQuery.event.stopPropagation function we had a check for existence of
				// originalEvent.stopPropagation method, so, consequently it would be a noop.
				//
				// Guard for simulated events was moved to jQuery.event.stopPropagation function
				// since `originalEvent` should point to the original event for the
				// constancy with other events and for more focused logic
			}
		);

		jQuery.event.trigger( e, null, elem );

		if ( e.isDefaultPrevented() ) {
			event.preventDefault();
		}
	}
};

jQuery.removeEvent = document.removeEventListener ?
	function( elem, type, handle ) {

		// This "if" is needed for plain objects
		if ( elem.removeEventListener ) {
			elem.removeEventListener( type, handle );
		}
	} :
	function( elem, type, handle ) {
		var name = "on" + type;

		if ( elem.detachEvent ) {

			// #8545, #7054, preventing memory leaks for custom events in IE6-8
			// detachEvent needed property on element, by name of that event,
			// to properly expose it to GC
			if ( typeof elem[ name ] === "undefined" ) {
				elem[ name ] = null;
			}

			elem.detachEvent( name, handle );
		}
	};

jQuery.Event = function( src, props ) {

	// Allow instantiation without the 'new' keyword
	if ( !( this instanceof jQuery.Event ) ) {
		return new jQuery.Event( src, props );
	}

	// Event object
	if ( src && src.type ) {
		this.originalEvent = src;
		this.type = src.type;

		// Events bubbling up the document may have been marked as prevented
		// by a handler lower down the tree; reflect the correct value.
		this.isDefaultPrevented = src.defaultPrevented ||
				src.defaultPrevented === undefined &&

				// Support: IE < 9, Android < 4.0
				src.returnValue === false ?
			returnTrue :
			returnFalse;

	// Event type
	} else {
		this.type = src;
	}

	// Put explicitly provided properties onto the event object
	if ( props ) {
		jQuery.extend( this, props );
	}

	// Create a timestamp if incoming event doesn't have one
	this.timeStamp = src && src.timeStamp || jQuery.now();

	// Mark it as fixed
	this[ jQuery.expando ] = true;
};

// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
	constructor: jQuery.Event,
	isDefaultPrevented: returnFalse,
	isPropagationStopped: returnFalse,
	isImmediatePropagationStopped: returnFalse,

	preventDefault: function() {
		var e = this.originalEvent;

		this.isDefaultPrevented = returnTrue;
		if ( !e ) {
			return;
		}

		// If preventDefault exists, run it on the original event
		if ( e.preventDefault ) {
			e.preventDefault();

		// Support: IE
		// Otherwise set the returnValue property of the original event to false
		} else {
			e.returnValue = false;
		}
	},
	stopPropagation: function() {
		var e = this.originalEvent;

		this.isPropagationStopped = returnTrue;

		if ( !e || this.isSimulated ) {
			return;
		}

		// If stopPropagation exists, run it on the original event
		if ( e.stopPropagation ) {
			e.stopPropagation();
		}

		// Support: IE
		// Set the cancelBubble property of the original event to true
		e.cancelBubble = true;
	},
	stopImmediatePropagation: function() {
		var e = this.originalEvent;

		this.isImmediatePropagationStopped = returnTrue;

		if ( e && e.stopImmediatePropagation ) {
			e.stopImmediatePropagation();
		}

		this.stopPropagation();
	}
};

// Create mouseenter/leave events using mouseover/out and event-time checks
// so that event delegation works in jQuery.
// Do the same for pointerenter/pointerleave and pointerover/pointerout
//
// Support: Safari 7 only
// Safari sends mouseenter too often; see:
// https://code.google.com/p/chromium/issues/detail?id=470258
// for the description of the bug (it existed in older Chrome versions as well).
jQuery.each( {
	mouseenter: "mouseover",
	mouseleave: "mouseout",
	pointerenter: "pointerover",
	pointerleave: "pointerout"
}, function( orig, fix ) {
	jQuery.event.special[ orig ] = {
		delegateType: fix,
		bindType: fix,

		handle: function( event ) {
			var ret,
				target = this,
				related = event.relatedTarget,
				handleObj = event.handleObj;

			// For mouseenter/leave call the handler if related is outside the target.
			// NB: No relatedTarget if the mouse left/entered the browser window
			if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
				event.type = handleObj.origType;
				ret = handleObj.handler.apply( this, arguments );
				event.type = fix;
			}
			return ret;
		}
	};
} );

// IE submit delegation
if ( !support.submit ) {

	jQuery.event.special.submit = {
		setup: function() {

			// Only need this for delegated form submit events
			if ( jQuery.nodeName( this, "form" ) ) {
				return false;
			}

			// Lazy-add a submit handler when a descendant form may potentially be submitted
			jQuery.event.add( this, "click._submit keypress._submit", function( e ) {

				// Node name check avoids a VML-related crash in IE (#9807)
				var elem = e.target,
					form = jQuery.nodeName( elem, "input" ) || jQuery.nodeName( elem, "button" ) ?

						// Support: IE <=8
						// We use jQuery.prop instead of elem.form
						// to allow fixing the IE8 delegated submit issue (gh-2332)
						// by 3rd party polyfills/workarounds.
						jQuery.prop( elem, "form" ) :
						undefined;

				if ( form && !jQuery._data( form, "submit" ) ) {
					jQuery.event.add( form, "submit._submit", function( event ) {
						event._submitBubble = true;
					} );
					jQuery._data( form, "submit", true );
				}
			} );

			// return undefined since we don't need an event listener
		},

		postDispatch: function( event ) {

			// If form was submitted by the user, bubble the event up the tree
			if ( event._submitBubble ) {
				delete event._submitBubble;
				if ( this.parentNode && !event.isTrigger ) {
					jQuery.event.simulate( "submit", this.parentNode, event );
				}
			}
		},

		teardown: function() {

			// Only need this for delegated form submit events
			if ( jQuery.nodeName( this, "form" ) ) {
				return false;
			}

			// Remove delegated handlers; cleanData eventually reaps submit handlers attached above
			jQuery.event.remove( this, "._submit" );
		}
	};
}

// IE change delegation and checkbox/radio fix
if ( !support.change ) {

	jQuery.event.special.change = {

		setup: function() {

			if ( rformElems.test( this.nodeName ) ) {

				// IE doesn't fire change on a check/radio until blur; trigger it on click
				// after a propertychange. Eat the blur-change in special.change.handle.
				// This still fires onchange a second time for check/radio after blur.
				if ( this.type === "checkbox" || this.type === "radio" ) {
					jQuery.event.add( this, "propertychange._change", function( event ) {
						if ( event.originalEvent.propertyName === "checked" ) {
							this._justChanged = true;
						}
					} );
					jQuery.event.add( this, "click._change", function( event ) {
						if ( this._justChanged && !event.isTrigger ) {
							this._justChanged = false;
						}

						// Allow triggered, simulated change events (#11500)
						jQuery.event.simulate( "change", this, event );
					} );
				}
				return false;
			}

			// Delegated event; lazy-add a change handler on descendant inputs
			jQuery.event.add( this, "beforeactivate._change", function( e ) {
				var elem = e.target;

				if ( rformElems.test( elem.nodeName ) && !jQuery._data( elem, "change" ) ) {
					jQuery.event.add( elem, "change._change", function( event ) {
						if ( this.parentNode && !event.isSimulated && !event.isTrigger ) {
							jQuery.event.simulate( "change", this.parentNode, event );
						}
					} );
					jQuery._data( elem, "change", true );
				}
			} );
		},

		handle: function( event ) {
			var elem = event.target;

			// Swallow native change events from checkbox/radio, we already triggered them above
			if ( this !== elem || event.isSimulated || event.isTrigger ||
				( elem.type !== "radio" && elem.type !== "checkbox" ) ) {

				return event.handleObj.handler.apply( this, arguments );
			}
		},

		teardown: function() {
			jQuery.event.remove( this, "._change" );

			return !rformElems.test( this.nodeName );
		}
	};
}

// Support: Firefox
// Firefox doesn't have focus(in | out) events
// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
//
// Support: Chrome, Safari
// focus(in | out) events fire after focus & blur events,
// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
// Related ticket - https://code.google.com/p/chromium/issues/detail?id=449857
if ( !support.focusin ) {
	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {

		// Attach a single capturing handler on the document while someone wants focusin/focusout
		var handler = function( event ) {
			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
		};

		jQuery.event.special[ fix ] = {
			setup: function() {
				var doc = this.ownerDocument || this,
					attaches = jQuery._data( doc, fix );

				if ( !attaches ) {
					doc.addEventListener( orig, handler, true );
				}
				jQuery._data( doc, fix, ( attaches || 0 ) + 1 );
			},
			teardown: function() {
				var doc = this.ownerDocument || this,
					attaches = jQuery._data( doc, fix ) - 1;

				if ( !attaches ) {
					doc.removeEventListener( orig, handler, true );
					jQuery._removeData( doc, fix );
				} else {
					jQuery._data( doc, fix, attaches );
				}
			}
		};
	} );
}

jQuery.fn.extend( {

	on: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn );
	},
	one: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn, 1 );
	},
	off: function( types, selector, fn ) {
		var handleObj, type;
		if ( types && types.preventDefault && types.handleObj ) {

			// ( event )  dispatched jQuery.Event
			handleObj = types.handleObj;
			jQuery( types.delegateTarget ).off(
				handleObj.namespace ?
					handleObj.origType + "." + handleObj.namespace :
					handleObj.origType,
				handleObj.selector,
				handleObj.handler
			);
			return this;
		}
		if ( typeof types === "object" ) {

			// ( types-object [, selector] )
			for ( type in types ) {
				this.off( type, selector, types[ type ] );
			}
			return this;
		}
		if ( selector === false || typeof selector === "function" ) {

			// ( types [, fn] )
			fn = selector;
			selector = undefined;
		}
		if ( fn === false ) {
			fn = returnFalse;
		}
		return this.each( function() {
			jQuery.event.remove( this, types, fn, selector );
		} );
	},

	trigger: function( type, data ) {
		return this.each( function() {
			jQuery.event.trigger( type, data, this );
		} );
	},
	triggerHandler: function( type, data ) {
		var elem = this[ 0 ];
		if ( elem ) {
			return jQuery.event.trigger( type, data, elem, true );
		}
	}
} );


var rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g,
	rnoshimcache = new RegExp( "<(?:" + nodeNames + ")[\\s/>]", "i" ),
	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:-]+)[^>]*)\/>/gi,

	// Support: IE 10-11, Edge 10240+
	// In IE/Edge using regex groups here causes severe slowdowns.
	// See https://connect.microsoft.com/IE/feedback/details/1736512/
	rnoInnerhtml = /<script|<style|<link/i,

	// checked="checked" or checked
	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
	rscriptTypeMasked = /^true\/(.*)/,
	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g,
	safeFragment = createSafeFragment( document ),
	fragmentDiv = safeFragment.appendChild( document.createElement( "div" ) );

// Support: IE<8
// Manipulating tables requires a tbody
function manipulationTarget( elem, content ) {
	return jQuery.nodeName( elem, "table" ) &&
		jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ?

		elem.getElementsByTagName( "tbody" )[ 0 ] ||
			elem.appendChild( elem.ownerDocument.createElement( "tbody" ) ) :
		elem;
}

// Replace/restore the type attribute of script elements for safe DOM manipulation
function disableScript( elem ) {
	elem.type = ( jQuery.find.attr( elem, "type" ) !== null ) + "/" + elem.type;
	return elem;
}
function restoreScript( elem ) {
	var match = rscriptTypeMasked.exec( elem.type );
	if ( match ) {
		elem.type = match[ 1 ];
	} else {
		elem.removeAttribute( "type" );
	}
	return elem;
}

function cloneCopyEvent( src, dest ) {
	if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
		return;
	}

	var type, i, l,
		oldData = jQuery._data( src ),
		curData = jQuery._data( dest, oldData ),
		events = oldData.events;

	if ( events ) {
		delete curData.handle;
		curData.events = {};

		for ( type in events ) {
			for ( i = 0, l = events[ type ].length; i < l; i++ ) {
				jQuery.event.add( dest, type, events[ type ][ i ] );
			}
		}
	}

	// make the cloned public data object a copy from the original
	if ( curData.data ) {
		curData.data = jQuery.extend( {}, curData.data );
	}
}

function fixCloneNodeIssues( src, dest ) {
	var nodeName, e, data;

	// We do not need to do anything for non-Elements
	if ( dest.nodeType !== 1 ) {
		return;
	}

	nodeName = dest.nodeName.toLowerCase();

	// IE6-8 copies events bound via attachEvent when using cloneNode.
	if ( !support.noCloneEvent && dest[ jQuery.expando ] ) {
		data = jQuery._data( dest );

		for ( e in data.events ) {
			jQuery.removeEvent( dest, e, data.handle );
		}

		// Event data gets referenced instead of copied if the expando gets copied too
		dest.removeAttribute( jQuery.expando );
	}

	// IE blanks contents when cloning scripts, and tries to evaluate newly-set text
	if ( nodeName === "script" && dest.text !== src.text ) {
		disableScript( dest ).text = src.text;
		restoreScript( dest );

	// IE6-10 improperly clones children of object elements using classid.
	// IE10 throws NoModificationAllowedError if parent is null, #12132.
	} else if ( nodeName === "object" ) {
		if ( dest.parentNode ) {
			dest.outerHTML = src.outerHTML;
		}

		// This path appears unavoidable for IE9. When cloning an object
		// element in IE9, the outerHTML strategy above is not sufficient.
		// If the src has innerHTML and the destination does not,
		// copy the src.innerHTML into the dest.innerHTML. #10324
		if ( support.html5Clone && ( src.innerHTML && !jQuery.trim( dest.innerHTML ) ) ) {
			dest.innerHTML = src.innerHTML;
		}

	} else if ( nodeName === "input" && rcheckableType.test( src.type ) ) {

		// IE6-8 fails to persist the checked state of a cloned checkbox
		// or radio button. Worse, IE6-7 fail to give the cloned element
		// a checked appearance if the defaultChecked value isn't also set

		dest.defaultChecked = dest.checked = src.checked;

		// IE6-7 get confused and end up setting the value of a cloned
		// checkbox/radio button to an empty string instead of "on"
		if ( dest.value !== src.value ) {
			dest.value = src.value;
		}

	// IE6-8 fails to return the selected option to the default selected
	// state when cloning options
	} else if ( nodeName === "option" ) {
		dest.defaultSelected = dest.selected = src.defaultSelected;

	// IE6-8 fails to set the defaultValue to the correct value when
	// cloning other types of input fields
	} else if ( nodeName === "input" || nodeName === "textarea" ) {
		dest.defaultValue = src.defaultValue;
	}
}

function domManip( collection, args, callback, ignored ) {

	// Flatten any nested arrays
	args = concat.apply( [], args );

	var first, node, hasScripts,
		scripts, doc, fragment,
		i = 0,
		l = collection.length,
		iNoClone = l - 1,
		value = args[ 0 ],
		isFunction = jQuery.isFunction( value );

	// We can't cloneNode fragments that contain checked, in WebKit
	if ( isFunction ||
			( l > 1 && typeof value === "string" &&
				!support.checkClone && rchecked.test( value ) ) ) {
		return collection.each( function( index ) {
			var self = collection.eq( index );
			if ( isFunction ) {
				args[ 0 ] = value.call( this, index, self.html() );
			}
			domManip( self, args, callback, ignored );
		} );
	}

	if ( l ) {
		fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
		first = fragment.firstChild;

		if ( fragment.childNodes.length === 1 ) {
			fragment = first;
		}

		// Require either new content or an interest in ignored elements to invoke the callback
		if ( first || ignored ) {
			scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
			hasScripts = scripts.length;

			// Use the original fragment for the last item
			// instead of the first because it can end up
			// being emptied incorrectly in certain situations (#8070).
			for ( ; i < l; i++ ) {
				node = fragment;

				if ( i !== iNoClone ) {
					node = jQuery.clone( node, true, true );

					// Keep references to cloned scripts for later restoration
					if ( hasScripts ) {

						// Support: Android<4.1, PhantomJS<2
						// push.apply(_, arraylike) throws on ancient WebKit
						jQuery.merge( scripts, getAll( node, "script" ) );
					}
				}

				callback.call( collection[ i ], node, i );
			}

			if ( hasScripts ) {
				doc = scripts[ scripts.length - 1 ].ownerDocument;

				// Reenable scripts
				jQuery.map( scripts, restoreScript );

				// Evaluate executable scripts on first document insertion
				for ( i = 0; i < hasScripts; i++ ) {
					node = scripts[ i ];
					if ( rscriptType.test( node.type || "" ) &&
						!jQuery._data( node, "globalEval" ) &&
						jQuery.contains( doc, node ) ) {

						if ( node.src ) {

							// Optional AJAX dependency, but won't run scripts if not present
							if ( jQuery._evalUrl ) {
								jQuery._evalUrl( node.src );
							}
						} else {
							jQuery.globalEval(
								( node.text || node.textContent || node.innerHTML || "" )
									.replace( rcleanScript, "" )
							);
						}
					}
				}
			}

			// Fix #11809: Avoid leaking memory
			fragment = first = null;
		}
	}

	return collection;
}

function remove( elem, selector, keepData ) {
	var node,
		elems = selector ? jQuery.filter( selector, elem ) : elem,
		i = 0;

	for ( ; ( node = elems[ i ] ) != null; i++ ) {

		if ( !keepData && node.nodeType === 1 ) {
			jQuery.cleanData( getAll( node ) );
		}

		if ( node.parentNode ) {
			if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
				setGlobalEval( getAll( node, "script" ) );
			}
			node.parentNode.removeChild( node );
		}
	}

	return elem;
}

jQuery.extend( {
	htmlPrefilter: function( html ) {
		return html.replace( rxhtmlTag, "<$1></$2>" );
	},

	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
		var destElements, node, clone, i, srcElements,
			inPage = jQuery.contains( elem.ownerDocument, elem );

		if ( support.html5Clone || jQuery.isXMLDoc( elem ) ||
			!rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {

			clone = elem.cloneNode( true );

		// IE<=8 does not properly clone detached, unknown element nodes
		} else {
			fragmentDiv.innerHTML = elem.outerHTML;
			fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
		}

		if ( ( !support.noCloneEvent || !support.noCloneChecked ) &&
				( elem.nodeType === 1 || elem.nodeType === 11 ) && !jQuery.isXMLDoc( elem ) ) {

			// We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2
			destElements = getAll( clone );
			srcElements = getAll( elem );

			// Fix all IE cloning issues
			for ( i = 0; ( node = srcElements[ i ] ) != null; ++i ) {

				// Ensure that the destination node is not null; Fixes #9587
				if ( destElements[ i ] ) {
					fixCloneNodeIssues( node, destElements[ i ] );
				}
			}
		}

		// Copy the events from the original to the clone
		if ( dataAndEvents ) {
			if ( deepDataAndEvents ) {
				srcElements = srcElements || getAll( elem );
				destElements = destElements || getAll( clone );

				for ( i = 0; ( node = srcElements[ i ] ) != null; i++ ) {
					cloneCopyEvent( node, destElements[ i ] );
				}
			} else {
				cloneCopyEvent( elem, clone );
			}
		}

		// Preserve script evaluation history
		destElements = getAll( clone, "script" );
		if ( destElements.length > 0 ) {
			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
		}

		destElements = srcElements = node = null;

		// Return the cloned set
		return clone;
	},

	cleanData: function( elems, /* internal */ forceAcceptData ) {
		var elem, type, id, data,
			i = 0,
			internalKey = jQuery.expando,
			cache = jQuery.cache,
			attributes = support.attributes,
			special = jQuery.event.special;

		for ( ; ( elem = elems[ i ] ) != null; i++ ) {
			if ( forceAcceptData || acceptData( elem ) ) {

				id = elem[ internalKey ];
				data = id && cache[ id ];

				if ( data ) {
					if ( data.events ) {
						for ( type in data.events ) {
							if ( special[ type ] ) {
								jQuery.event.remove( elem, type );

							// This is a shortcut to avoid jQuery.event.remove's overhead
							} else {
								jQuery.removeEvent( elem, type, data.handle );
							}
						}
					}

					// Remove cache only if it was not already removed by jQuery.event.remove
					if ( cache[ id ] ) {

						delete cache[ id ];

						// Support: IE<9
						// IE does not allow us to delete expando properties from nodes
						// IE creates expando attributes along with the property
						// IE does not have a removeAttribute function on Document nodes
						if ( !attributes && typeof elem.removeAttribute !== "undefined" ) {
							elem.removeAttribute( internalKey );

						// Webkit & Blink performance suffers when deleting properties
						// from DOM nodes, so set to undefined instead
						// https://code.google.com/p/chromium/issues/detail?id=378607
						} else {
							elem[ internalKey ] = undefined;
						}

						deletedIds.push( id );
					}
				}
			}
		}
	}
} );

jQuery.fn.extend( {

	// Keep domManip exposed until 3.0 (gh-2225)
	domManip: domManip,

	detach: function( selector ) {
		return remove( this, selector, true );
	},

	remove: function( selector ) {
		return remove( this, selector );
	},

	text: function( value ) {
		return access( this, function( value ) {
			return value === undefined ?
				jQuery.text( this ) :
				this.empty().append(
					( this[ 0 ] && this[ 0 ].ownerDocument || document ).createTextNode( value )
				);
		}, null, value, arguments.length );
	},

	append: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.appendChild( elem );
			}
		} );
	},

	prepend: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.insertBefore( elem, target.firstChild );
			}
		} );
	},

	before: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this );
			}
		} );
	},

	after: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this.nextSibling );
			}
		} );
	},

	empty: function() {
		var elem,
			i = 0;

		for ( ; ( elem = this[ i ] ) != null; i++ ) {

			// Remove element nodes and prevent memory leaks
			if ( elem.nodeType === 1 ) {
				jQuery.cleanData( getAll( elem, false ) );
			}

			// Remove any remaining nodes
			while ( elem.firstChild ) {
				elem.removeChild( elem.firstChild );
			}

			// If this is a select, ensure that it displays empty (#12336)
			// Support: IE<9
			if ( elem.options && jQuery.nodeName( elem, "select" ) ) {
				elem.options.length = 0;
			}
		}

		return this;
	},

	clone: function( dataAndEvents, deepDataAndEvents ) {
		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;

		return this.map( function() {
			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
		} );
	},

	html: function( value ) {
		return access( this, function( value ) {
			var elem = this[ 0 ] || {},
				i = 0,
				l = this.length;

			if ( value === undefined ) {
				return elem.nodeType === 1 ?
					elem.innerHTML.replace( rinlinejQuery, "" ) :
					undefined;
			}

			// See if we can take a shortcut and just use innerHTML
			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
				( support.htmlSerialize || !rnoshimcache.test( value )  ) &&
				( support.leadingWhitespace || !rleadingWhitespace.test( value ) ) &&
				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {

				value = jQuery.htmlPrefilter( value );

				try {
					for ( ; i < l; i++ ) {

						// Remove element nodes and prevent memory leaks
						elem = this[ i ] || {};
						if ( elem.nodeType === 1 ) {
							jQuery.cleanData( getAll( elem, false ) );
							elem.innerHTML = value;
						}
					}

					elem = 0;

				// If using innerHTML throws an exception, use the fallback method
				} catch ( e ) {}
			}

			if ( elem ) {
				this.empty().append( value );
			}
		}, null, value, arguments.length );
	},

	replaceWith: function() {
		var ignored = [];

		// Make the changes, replacing each non-ignored context element with the new content
		return domManip( this, arguments, function( elem ) {
			var parent = this.parentNode;

			if ( jQuery.inArray( this, ignored ) < 0 ) {
				jQuery.cleanData( getAll( this ) );
				if ( parent ) {
					parent.replaceChild( elem, this );
				}
			}

		// Force callback invocation
		}, ignored );
	}
} );

jQuery.each( {
	appendTo: "append",
	prependTo: "prepend",
	insertBefore: "before",
	insertAfter: "after",
	replaceAll: "replaceWith"
}, function( name, original ) {
	jQuery.fn[ name ] = function( selector ) {
		var elems,
			i = 0,
			ret = [],
			insert = jQuery( selector ),
			last = insert.length - 1;

		for ( ; i <= last; i++ ) {
			elems = i === last ? this : this.clone( true );
			jQuery( insert[ i ] )[ original ]( elems );

			// Modern browsers can apply jQuery collections as arrays, but oldIE needs a .get()
			push.apply( ret, elems.get() );
		}

		return this.pushStack( ret );
	};
} );


var iframe,
	elemdisplay = {

		// Support: Firefox
		// We have to pre-define these values for FF (#10227)
		HTML: "block",
		BODY: "block"
	};

/**
 * Retrieve the actual display of a element
 * @param {String} name nodeName of the element
 * @param {Object} doc Document object
 */

// Called only from within defaultDisplay
function actualDisplay( name, doc ) {
	var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),

		display = jQuery.css( elem[ 0 ], "display" );

	// We don't have any data stored on the element,
	// so use "detach" method as fast way to get rid of the element
	elem.detach();

	return display;
}

/**
 * Try to determine the default display value of an element
 * @param {String} nodeName
 */
function defaultDisplay( nodeName ) {
	var doc = document,
		display = elemdisplay[ nodeName ];

	if ( !display ) {
		display = actualDisplay( nodeName, doc );

		// If the simple way fails, read from inside an iframe
		if ( display === "none" || !display ) {

			// Use the already-created iframe if possible
			iframe = ( iframe || jQuery( "<iframe frameborder='0' width='0' height='0'/>" ) )
				.appendTo( doc.documentElement );

			// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
			doc = ( iframe[ 0 ].contentWindow || iframe[ 0 ].contentDocument ).document;

			// Support: IE
			doc.write();
			doc.close();

			display = actualDisplay( nodeName, doc );
			iframe.detach();
		}

		// Store the correct default display
		elemdisplay[ nodeName ] = display;
	}

	return display;
}
var rmargin = ( /^margin/ );

var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );

var swap = function( elem, options, callback, args ) {
	var ret, name,
		old = {};

	// Remember the old values, and insert the new ones
	for ( name in options ) {
		old[ name ] = elem.style[ name ];
		elem.style[ name ] = options[ name ];
	}

	ret = callback.apply( elem, args || [] );

	// Revert the old values
	for ( name in options ) {
		elem.style[ name ] = old[ name ];
	}

	return ret;
};


var documentElement = document.documentElement;



( function() {
	var pixelPositionVal, pixelMarginRightVal, boxSizingReliableVal,
		reliableHiddenOffsetsVal, reliableMarginRightVal, reliableMarginLeftVal,
		container = document.createElement( "div" ),
		div = document.createElement( "div" );

	// Finish early in limited (non-browser) environments
	if ( !div.style ) {
		return;
	}

	div.style.cssText = "float:left;opacity:.5";

	// Support: IE<9
	// Make sure that element opacity exists (as opposed to filter)
	support.opacity = div.style.opacity === "0.5";

	// Verify style float existence
	// (IE uses styleFloat instead of cssFloat)
	support.cssFloat = !!div.style.cssFloat;

	div.style.backgroundClip = "content-box";
	div.cloneNode( true ).style.backgroundClip = "";
	support.clearCloneStyle = div.style.backgroundClip === "content-box";

	container = document.createElement( "div" );
	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
		"padding:0;margin-top:1px;position:absolute";
	div.innerHTML = "";
	container.appendChild( div );

	// Support: Firefox<29, Android 2.3
	// Vendor-prefix box-sizing
	support.boxSizing = div.style.boxSizing === "" || div.style.MozBoxSizing === "" ||
		div.style.WebkitBoxSizing === "";

	jQuery.extend( support, {
		reliableHiddenOffsets: function() {
			if ( pixelPositionVal == null ) {
				computeStyleTests();
			}
			return reliableHiddenOffsetsVal;
		},

		boxSizingReliable: function() {

			// We're checking for pixelPositionVal here instead of boxSizingReliableVal
			// since that compresses better and they're computed together anyway.
			if ( pixelPositionVal == null ) {
				computeStyleTests();
			}
			return boxSizingReliableVal;
		},

		pixelMarginRight: function() {

			// Support: Android 4.0-4.3
			if ( pixelPositionVal == null ) {
				computeStyleTests();
			}
			return pixelMarginRightVal;
		},

		pixelPosition: function() {
			if ( pixelPositionVal == null ) {
				computeStyleTests();
			}
			return pixelPositionVal;
		},

		reliableMarginRight: function() {

			// Support: Android 2.3
			if ( pixelPositionVal == null ) {
				computeStyleTests();
			}
			return reliableMarginRightVal;
		},

		reliableMarginLeft: function() {

			// Support: IE <=8 only, Android 4.0 - 4.3 only, Firefox <=3 - 37
			if ( pixelPositionVal == null ) {
				computeStyleTests();
			}
			return reliableMarginLeftVal;
		}
	} );

	function computeStyleTests() {
		var contents, divStyle,
			documentElement = document.documentElement;

		// Setup
		documentElement.appendChild( container );

		div.style.cssText =

			// Support: Android 2.3
			// Vendor-prefix box-sizing
			"-webkit-box-sizing:border-box;box-sizing:border-box;" +
			"position:relative;display:block;" +
			"margin:auto;border:1px;padding:1px;" +
			"top:1%;width:50%";

		// Support: IE<9
		// Assume reasonable values in the absence of getComputedStyle
		pixelPositionVal = boxSizingReliableVal = reliableMarginLeftVal = false;
		pixelMarginRightVal = reliableMarginRightVal = true;

		// Check for getComputedStyle so that this code is not run in IE<9.
		if ( window.getComputedStyle ) {
			divStyle = window.getComputedStyle( div );
			pixelPositionVal = ( divStyle || {} ).top !== "1%";
			reliableMarginLeftVal = ( divStyle || {} ).marginLeft === "2px";
			boxSizingReliableVal = ( divStyle || { width: "4px" } ).width === "4px";

			// Support: Android 4.0 - 4.3 only
			// Some styles come back with percentage values, even though they shouldn't
			div.style.marginRight = "50%";
			pixelMarginRightVal = ( divStyle || { marginRight: "4px" } ).marginRight === "4px";

			// Support: Android 2.3 only
			// Div with explicit width and no margin-right incorrectly
			// gets computed margin-right based on width of container (#3333)
			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
			contents = div.appendChild( document.createElement( "div" ) );

			// Reset CSS: box-sizing; display; margin; border; padding
			contents.style.cssText = div.style.cssText =

				// Support: Android 2.3
				// Vendor-prefix box-sizing
				"-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
				"box-sizing:content-box;display:block;margin:0;border:0;padding:0";
			contents.style.marginRight = contents.style.width = "0";
			div.style.width = "1px";

			reliableMarginRightVal =
				!parseFloat( ( window.getComputedStyle( contents ) || {} ).marginRight );

			div.removeChild( contents );
		}

		// Support: IE6-8
		// First check that getClientRects works as expected
		// Check if table cells still have offsetWidth/Height when they are set
		// to display:none and there are still other visible table cells in a
		// table row; if so, offsetWidth/Height are not reliable for use when
		// determining if an element has been hidden directly using
		// display:none (it is still safe to use offsets if a parent element is
		// hidden; don safety goggles and see bug #4512 for more information).
		div.style.display = "none";
		reliableHiddenOffsetsVal = div.getClientRects().length === 0;
		if ( reliableHiddenOffsetsVal ) {
			div.style.display = "";
			div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
			div.childNodes[ 0 ].style.borderCollapse = "separate";
			contents = div.getElementsByTagName( "td" );
			contents[ 0 ].style.cssText = "margin:0;border:0;padding:0;display:none";
			reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
			if ( reliableHiddenOffsetsVal ) {
				contents[ 0 ].style.display = "";
				contents[ 1 ].style.display = "none";
				reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
			}
		}

		// Teardown
		documentElement.removeChild( container );
	}

} )();


var getStyles, curCSS,
	rposition = /^(top|right|bottom|left)$/;

if ( window.getComputedStyle ) {
	getStyles = function( elem ) {

		// Support: IE<=11+, Firefox<=30+ (#15098, #14150)
		// IE throws on elements created in popups
		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
		var view = elem.ownerDocument.defaultView;

		if ( !view || !view.opener ) {
			view = window;
		}

		return view.getComputedStyle( elem );
	};

	curCSS = function( elem, name, computed ) {
		var width, minWidth, maxWidth, ret,
			style = elem.style;

		computed = computed || getStyles( elem );

		// getPropertyValue is only needed for .css('filter') in IE9, see #12537
		ret = computed ? computed.getPropertyValue( name ) || computed[ name ] : undefined;

		// Support: Opera 12.1x only
		// Fall back to style even without computed
		// computed is undefined for elems on document fragments
		if ( ( ret === "" || ret === undefined ) && !jQuery.contains( elem.ownerDocument, elem ) ) {
			ret = jQuery.style( elem, name );
		}

		if ( computed ) {

			// A tribute to the "awesome hack by Dean Edwards"
			// Chrome < 17 and Safari 5.0 uses "computed value"
			// instead of "used value" for margin-right
			// Safari 5.1.7 (at least) returns percentage for a larger set of values,
			// but width seems to be reliably pixels
			// this is against the CSSOM draft spec:
			// http://dev.w3.org/csswg/cssom/#resolved-values
			if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {

				// Remember the original values
				width = style.width;
				minWidth = style.minWidth;
				maxWidth = style.maxWidth;

				// Put in the new values to get a computed value out
				style.minWidth = style.maxWidth = style.width = ret;
				ret = computed.width;

				// Revert the changed values
				style.width = width;
				style.minWidth = minWidth;
				style.maxWidth = maxWidth;
			}
		}

		// Support: IE
		// IE returns zIndex value as an integer.
		return ret === undefined ?
			ret :
			ret + "";
	};
} else if ( documentElement.currentStyle ) {
	getStyles = function( elem ) {
		return elem.currentStyle;
	};

	curCSS = function( elem, name, computed ) {
		var left, rs, rsLeft, ret,
			style = elem.style;

		computed = computed || getStyles( elem );
		ret = computed ? computed[ name ] : undefined;

		// Avoid setting ret to empty string here
		// so we don't default to auto
		if ( ret == null && style && style[ name ] ) {
			ret = style[ name ];
		}

		// From the awesome hack by Dean Edwards
		// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291

		// If we're not dealing with a regular pixel number
		// but a number that has a weird ending, we need to convert it to pixels
		// but not position css attributes, as those are
		// proportional to the parent element instead
		// and we can't measure the parent instead because it
		// might trigger a "stacking dolls" problem
		if ( rnumnonpx.test( ret ) && !rposition.test( name ) ) {

			// Remember the original values
			left = style.left;
			rs = elem.runtimeStyle;
			rsLeft = rs && rs.left;

			// Put in the new values to get a computed value out
			if ( rsLeft ) {
				rs.left = elem.currentStyle.left;
			}
			style.left = name === "fontSize" ? "1em" : ret;
			ret = style.pixelLeft + "px";

			// Revert the changed values
			style.left = left;
			if ( rsLeft ) {
				rs.left = rsLeft;
			}
		}

		// Support: IE
		// IE returns zIndex value as an integer.
		return ret === undefined ?
			ret :
			ret + "" || "auto";
	};
}




function addGetHookIf( conditionFn, hookFn ) {

	// Define the hook, we'll check on the first run if it's really needed.
	return {
		get: function() {
			if ( conditionFn() ) {

				// Hook not needed (or it's not possible to use it due
				// to missing dependency), remove it.
				delete this.get;
				return;
			}

			// Hook needed; redefine it so that the support test is not executed again.
			return ( this.get = hookFn ).apply( this, arguments );
		}
	};
}


var

		ralpha = /alpha\([^)]*\)/i,
	ropacity = /opacity\s*=\s*([^)]*)/i,

	// swappable if display is none or starts with table except
	// "table", "table-cell", or "table-caption"
	// see here for display values:
	// https://developer.mozilla.org/en-US/docs/CSS/display
	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
	rnumsplit = new RegExp( "^(" + pnum + ")(.*)$", "i" ),

	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
	cssNormalTransform = {
		letterSpacing: "0",
		fontWeight: "400"
	},

	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ],
	emptyStyle = document.createElement( "div" ).style;


// return a css property mapped to a potentially vendor prefixed property
function vendorPropName( name ) {

	// shortcut for names that are not vendor prefixed
	if ( name in emptyStyle ) {
		return name;
	}

	// check for vendor prefixed names
	var capName = name.charAt( 0 ).toUpperCase() + name.slice( 1 ),
		i = cssPrefixes.length;

	while ( i-- ) {
		name = cssPrefixes[ i ] + capName;
		if ( name in emptyStyle ) {
			return name;
		}
	}
}

function showHide( elements, show ) {
	var display, elem, hidden,
		values = [],
		index = 0,
		length = elements.length;

	for ( ; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}

		values[ index ] = jQuery._data( elem, "olddisplay" );
		display = elem.style.display;
		if ( show ) {

			// Reset the inline display of this element to learn if it is
			// being hidden by cascaded rules or not
			if ( !values[ index ] && display === "none" ) {
				elem.style.display = "";
			}

			// Set elements which have been overridden with display: none
			// in a stylesheet to whatever the default browser style is
			// for such an element
			if ( elem.style.display === "" && isHidden( elem ) ) {
				values[ index ] =
					jQuery._data( elem, "olddisplay", defaultDisplay( elem.nodeName ) );
			}
		} else {
			hidden = isHidden( elem );

			if ( display && display !== "none" || !hidden ) {
				jQuery._data(
					elem,
					"olddisplay",
					hidden ? display : jQuery.css( elem, "display" )
				);
			}
		}
	}

	// Set the display of most of the elements in a second loop
	// to avoid the constant reflow
	for ( index = 0; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}
		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
			elem.style.display = show ? values[ index ] || "" : "none";
		}
	}

	return elements;
}

function setPositiveNumber( elem, value, subtract ) {
	var matches = rnumsplit.exec( value );
	return matches ?

		// Guard against undefined "subtract", e.g., when used as in cssHooks
		Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) :
		value;
}

function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
	var i = extra === ( isBorderBox ? "border" : "content" ) ?

		// If we already have the right measurement, avoid augmentation
		4 :

		// Otherwise initialize for horizontal or vertical properties
		name === "width" ? 1 : 0,

		val = 0;

	for ( ; i < 4; i += 2 ) {

		// both box models exclude margin, so add it if we want it
		if ( extra === "margin" ) {
			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
		}

		if ( isBorderBox ) {

			// border-box includes padding, so remove it if we want content
			if ( extra === "content" ) {
				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
			}

			// at this point, extra isn't border nor margin, so remove border
			if ( extra !== "margin" ) {
				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		} else {

			// at this point, extra isn't content, so add padding
			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );

			// at this point, extra isn't content nor padding, so add border
			if ( extra !== "padding" ) {
				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		}
	}

	return val;
}

function getWidthOrHeight( elem, name, extra ) {

	// Start with offset property, which is equivalent to the border-box value
	var valueIsBorderBox = true,
		val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
		styles = getStyles( elem ),
		isBorderBox = support.boxSizing &&
			jQuery.css( elem, "boxSizing", false, styles ) === "border-box";

	// some non-html elements return undefined for offsetWidth, so check for null/undefined
	// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
	// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
	if ( val <= 0 || val == null ) {

		// Fall back to computed then uncomputed css if necessary
		val = curCSS( elem, name, styles );
		if ( val < 0 || val == null ) {
			val = elem.style[ name ];
		}

		// Computed unit is not pixels. Stop here and return.
		if ( rnumnonpx.test( val ) ) {
			return val;
		}

		// we need the check for style in case a browser which returns unreliable values
		// for getComputedStyle silently falls back to the reliable elem.style
		valueIsBorderBox = isBorderBox &&
			( support.boxSizingReliable() || val === elem.style[ name ] );

		// Normalize "", auto, and prepare for extra
		val = parseFloat( val ) || 0;
	}

	// use the active box-sizing model to add/subtract irrelevant styles
	return ( val +
		augmentWidthOrHeight(
			elem,
			name,
			extra || ( isBorderBox ? "border" : "content" ),
			valueIsBorderBox,
			styles
		)
	) + "px";
}

jQuery.extend( {

	// Add in style property hooks for overriding the default
	// behavior of getting and setting a style property
	cssHooks: {
		opacity: {
			get: function( elem, computed ) {
				if ( computed ) {

					// We should always get a number back from opacity
					var ret = curCSS( elem, "opacity" );
					return ret === "" ? "1" : ret;
				}
			}
		}
	},

	// Don't automatically add "px" to these possibly-unitless properties
	cssNumber: {
		"animationIterationCount": true,
		"columnCount": true,
		"fillOpacity": true,
		"flexGrow": true,
		"flexShrink": true,
		"fontWeight": true,
		"lineHeight": true,
		"opacity": true,
		"order": true,
		"orphans": true,
		"widows": true,
		"zIndex": true,
		"zoom": true
	},

	// Add in properties whose names you wish to fix before
	// setting or getting the value
	cssProps: {

		// normalize float css property
		"float": support.cssFloat ? "cssFloat" : "styleFloat"
	},

	// Get and set the style property on a DOM Node
	style: function( elem, name, value, extra ) {

		// Don't set styles on text and comment nodes
		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
			return;
		}

		// Make sure that we're working with the right name
		var ret, type, hooks,
			origName = jQuery.camelCase( name ),
			style = elem.style;

		name = jQuery.cssProps[ origName ] ||
			( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName );

		// gets hook for the prefixed version
		// followed by the unprefixed version
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// Check if we're setting a value
		if ( value !== undefined ) {
			type = typeof value;

			// Convert "+=" or "-=" to relative numbers (#7345)
			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
				value = adjustCSS( elem, name, ret );

				// Fixes bug #9237
				type = "number";
			}

			// Make sure that null and NaN values aren't set. See: #7116
			if ( value == null || value !== value ) {
				return;
			}

			// If a number was passed in, add the unit (except for certain CSS properties)
			if ( type === "number" ) {
				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
			}

			// Fixes #8908, it can be done more correctly by specifing setters in cssHooks,
			// but it would mean to define eight
			// (for every problematic property) identical functions
			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
				style[ name ] = "inherit";
			}

			// If a hook was provided, use that value, otherwise just set the specified value
			if ( !hooks || !( "set" in hooks ) ||
				( value = hooks.set( elem, value, extra ) ) !== undefined ) {

				// Support: IE
				// Swallow errors from 'invalid' CSS values (#5509)
				try {
					style[ name ] = value;
				} catch ( e ) {}
			}

		} else {

			// If a hook was provided get the non-computed value from there
			if ( hooks && "get" in hooks &&
				( ret = hooks.get( elem, false, extra ) ) !== undefined ) {

				return ret;
			}

			// Otherwise just get the value from the style object
			return style[ name ];
		}
	},

	css: function( elem, name, extra, styles ) {
		var num, val, hooks,
			origName = jQuery.camelCase( name );

		// Make sure that we're working with the right name
		name = jQuery.cssProps[ origName ] ||
			( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName );

		// gets hook for the prefixed version
		// followed by the unprefixed version
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// If a hook was provided get the computed value from there
		if ( hooks && "get" in hooks ) {
			val = hooks.get( elem, true, extra );
		}

		// Otherwise, if a way to get the computed value exists, use that
		if ( val === undefined ) {
			val = curCSS( elem, name, styles );
		}

		//convert "normal" to computed value
		if ( val === "normal" && name in cssNormalTransform ) {
			val = cssNormalTransform[ name ];
		}

		// Return, converting to number if forced or a qualifier was provided and val looks numeric
		if ( extra === "" || extra ) {
			num = parseFloat( val );
			return extra === true || isFinite( num ) ? num || 0 : val;
		}
		return val;
	}
} );

jQuery.each( [ "height", "width" ], function( i, name ) {
	jQuery.cssHooks[ name ] = {
		get: function( elem, computed, extra ) {
			if ( computed ) {

				// certain elements can have dimension info if we invisibly show them
				// however, it must have a current display style that would benefit from this
				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
					elem.offsetWidth === 0 ?
						swap( elem, cssShow, function() {
							return getWidthOrHeight( elem, name, extra );
						} ) :
						getWidthOrHeight( elem, name, extra );
			}
		},

		set: function( elem, value, extra ) {
			var styles = extra && getStyles( elem );
			return setPositiveNumber( elem, value, extra ?
				augmentWidthOrHeight(
					elem,
					name,
					extra,
					support.boxSizing &&
						jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
					styles
				) : 0
			);
		}
	};
} );

if ( !support.opacity ) {
	jQuery.cssHooks.opacity = {
		get: function( elem, computed ) {

			// IE uses filters for opacity
			return ropacity.test( ( computed && elem.currentStyle ?
				elem.currentStyle.filter :
				elem.style.filter ) || "" ) ?
					( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
					computed ? "1" : "";
		},

		set: function( elem, value ) {
			var style = elem.style,
				currentStyle = elem.currentStyle,
				opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
				filter = currentStyle && currentStyle.filter || style.filter || "";

			// IE has trouble with opacity if it does not have layout
			// Force it by setting the zoom level
			style.zoom = 1;

			// if setting opacity to 1, and no other filters exist -
			// attempt to remove filter attribute #6652
			// if value === "", then remove inline opacity #12685
			if ( ( value >= 1 || value === "" ) &&
					jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
					style.removeAttribute ) {

				// Setting style.filter to null, "" & " " still leave "filter:" in the cssText
				// if "filter:" is present at all, clearType is disabled, we want to avoid this
				// style.removeAttribute is IE Only, but so apparently is this code path...
				style.removeAttribute( "filter" );

				// if there is no filter style applied in a css rule
				// or unset inline opacity, we are done
				if ( value === "" || currentStyle && !currentStyle.filter ) {
					return;
				}
			}

			// otherwise, set new filter values
			style.filter = ralpha.test( filter ) ?
				filter.replace( ralpha, opacity ) :
				filter + " " + opacity;
		}
	};
}

jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
	function( elem, computed ) {
		if ( computed ) {
			return swap( elem, { "display": "inline-block" },
				curCSS, [ elem, "marginRight" ] );
		}
	}
);

jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
	function( elem, computed ) {
		if ( computed ) {
			return (
				parseFloat( curCSS( elem, "marginLeft" ) ) ||

				// Support: IE<=11+
				// Running getBoundingClientRect on a disconnected node in IE throws an error
				// Support: IE8 only
				// getClientRects() errors on disconnected elems
				( jQuery.contains( elem.ownerDocument, elem ) ?
					elem.getBoundingClientRect().left -
						swap( elem, { marginLeft: 0 }, function() {
							return elem.getBoundingClientRect().left;
						} ) :
					0
				)
			) + "px";
		}
	}
);

// These hooks are used by animate to expand properties
jQuery.each( {
	margin: "",
	padding: "",
	border: "Width"
}, function( prefix, suffix ) {
	jQuery.cssHooks[ prefix + suffix ] = {
		expand: function( value ) {
			var i = 0,
				expanded = {},

				// assumes a single number if not a string
				parts = typeof value === "string" ? value.split( " " ) : [ value ];

			for ( ; i < 4; i++ ) {
				expanded[ prefix + cssExpand[ i ] + suffix ] =
					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
			}

			return expanded;
		}
	};

	if ( !rmargin.test( prefix ) ) {
		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
	}
} );

jQuery.fn.extend( {
	css: function( name, value ) {
		return access( this, function( elem, name, value ) {
			var styles, len,
				map = {},
				i = 0;

			if ( jQuery.isArray( name ) ) {
				styles = getStyles( elem );
				len = name.length;

				for ( ; i < len; i++ ) {
					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
				}

				return map;
			}

			return value !== undefined ?
				jQuery.style( elem, name, value ) :
				jQuery.css( elem, name );
		}, name, value, arguments.length > 1 );
	},
	show: function() {
		return showHide( this, true );
	},
	hide: function() {
		return showHide( this );
	},
	toggle: function( state ) {
		if ( typeof state === "boolean" ) {
			return state ? this.show() : this.hide();
		}

		return this.each( function() {
			if ( isHidden( this ) ) {
				jQuery( this ).show();
			} else {
				jQuery( this ).hide();
			}
		} );
	}
} );


function Tween( elem, options, prop, end, easing ) {
	return new Tween.prototype.init( elem, options, prop, end, easing );
}
jQuery.Tween = Tween;

Tween.prototype = {
	constructor: Tween,
	init: function( elem, options, prop, end, easing, unit ) {
		this.elem = elem;
		this.prop = prop;
		this.easing = easing || jQuery.easing._default;
		this.options = options;
		this.start = this.now = this.cur();
		this.end = end;
		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
	},
	cur: function() {
		var hooks = Tween.propHooks[ this.prop ];

		return hooks && hooks.get ?
			hooks.get( this ) :
			Tween.propHooks._default.get( this );
	},
	run: function( percent ) {
		var eased,
			hooks = Tween.propHooks[ this.prop ];

		if ( this.options.duration ) {
			this.pos = eased = jQuery.easing[ this.easing ](
				percent, this.options.duration * percent, 0, 1, this.options.duration
			);
		} else {
			this.pos = eased = percent;
		}
		this.now = ( this.end - this.start ) * eased + this.start;

		if ( this.options.step ) {
			this.options.step.call( this.elem, this.now, this );
		}

		if ( hooks && hooks.set ) {
			hooks.set( this );
		} else {
			Tween.propHooks._default.set( this );
		}
		return this;
	}
};

Tween.prototype.init.prototype = Tween.prototype;

Tween.propHooks = {
	_default: {
		get: function( tween ) {
			var result;

			// Use a property on the element directly when it is not a DOM element,
			// or when there is no matching style property that exists.
			if ( tween.elem.nodeType !== 1 ||
				tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
				return tween.elem[ tween.prop ];
			}

			// passing an empty string as a 3rd parameter to .css will automatically
			// attempt a parseFloat and fallback to a string if the parse fails
			// so, simple values such as "10px" are parsed to Float.
			// complex values such as "rotate(1rad)" are returned as is.
			result = jQuery.css( tween.elem, tween.prop, "" );

			// Empty strings, null, undefined and "auto" are converted to 0.
			return !result || result === "auto" ? 0 : result;
		},
		set: function( tween ) {

			// use step hook for back compat - use cssHook if its there - use .style if its
			// available and use plain properties where available
			if ( jQuery.fx.step[ tween.prop ] ) {
				jQuery.fx.step[ tween.prop ]( tween );
			} else if ( tween.elem.nodeType === 1 &&
				( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
					jQuery.cssHooks[ tween.prop ] ) ) {
				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
			} else {
				tween.elem[ tween.prop ] = tween.now;
			}
		}
	}
};

// Support: IE <=9
// Panic based approach to setting things on disconnected nodes

Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
	set: function( tween ) {
		if ( tween.elem.nodeType && tween.elem.parentNode ) {
			tween.elem[ tween.prop ] = tween.now;
		}
	}
};

jQuery.easing = {
	linear: function( p ) {
		return p;
	},
	swing: function( p ) {
		return 0.5 - Math.cos( p * Math.PI ) / 2;
	},
	_default: "swing"
};

jQuery.fx = Tween.prototype.init;

// Back Compat <1.8 extension point
jQuery.fx.step = {};




var
	fxNow, timerId,
	rfxtypes = /^(?:toggle|show|hide)$/,
	rrun = /queueHooks$/;

// Animations created synchronously will run synchronously
function createFxNow() {
	window.setTimeout( function() {
		fxNow = undefined;
	} );
	return ( fxNow = jQuery.now() );
}

// Generate parameters to create a standard animation
function genFx( type, includeWidth ) {
	var which,
		attrs = { height: type },
		i = 0;

	// if we include width, step value is 1 to do all cssExpand values,
	// if we don't include width, step value is 2 to skip over Left and Right
	includeWidth = includeWidth ? 1 : 0;
	for ( ; i < 4 ; i += 2 - includeWidth ) {
		which = cssExpand[ i ];
		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
	}

	if ( includeWidth ) {
		attrs.opacity = attrs.width = type;
	}

	return attrs;
}

function createTween( value, prop, animation ) {
	var tween,
		collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
		index = 0,
		length = collection.length;
	for ( ; index < length; index++ ) {
		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {

			// we're done with this property
			return tween;
		}
	}
}

function defaultPrefilter( elem, props, opts ) {
	/* jshint validthis: true */
	var prop, value, toggle, tween, hooks, oldfire, display, checkDisplay,
		anim = this,
		orig = {},
		style = elem.style,
		hidden = elem.nodeType && isHidden( elem ),
		dataShow = jQuery._data( elem, "fxshow" );

	// handle queue: false promises
	if ( !opts.queue ) {
		hooks = jQuery._queueHooks( elem, "fx" );
		if ( hooks.unqueued == null ) {
			hooks.unqueued = 0;
			oldfire = hooks.empty.fire;
			hooks.empty.fire = function() {
				if ( !hooks.unqueued ) {
					oldfire();
				}
			};
		}
		hooks.unqueued++;

		anim.always( function() {

			// doing this makes sure that the complete handler will be called
			// before this completes
			anim.always( function() {
				hooks.unqueued--;
				if ( !jQuery.queue( elem, "fx" ).length ) {
					hooks.empty.fire();
				}
			} );
		} );
	}

	// height/width overflow pass
	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {

		// Make sure that nothing sneaks out
		// Record all 3 overflow attributes because IE does not
		// change the overflow attribute when overflowX and
		// overflowY are set to the same value
		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];

		// Set display property to inline-block for height/width
		// animations on inline elements that are having width/height animated
		display = jQuery.css( elem, "display" );

		// Test default display if display is currently "none"
		checkDisplay = display === "none" ?
			jQuery._data( elem, "olddisplay" ) || defaultDisplay( elem.nodeName ) : display;

		if ( checkDisplay === "inline" && jQuery.css( elem, "float" ) === "none" ) {

			// inline-level elements accept inline-block;
			// block-level elements need to be inline with layout
			if ( !support.inlineBlockNeedsLayout || defaultDisplay( elem.nodeName ) === "inline" ) {
				style.display = "inline-block";
			} else {
				style.zoom = 1;
			}
		}
	}

	if ( opts.overflow ) {
		style.overflow = "hidden";
		if ( !support.shrinkWrapBlocks() ) {
			anim.always( function() {
				style.overflow = opts.overflow[ 0 ];
				style.overflowX = opts.overflow[ 1 ];
				style.overflowY = opts.overflow[ 2 ];
			} );
		}
	}

	// show/hide pass
	for ( prop in props ) {
		value = props[ prop ];
		if ( rfxtypes.exec( value ) ) {
			delete props[ prop ];
			toggle = toggle || value === "toggle";
			if ( value === ( hidden ? "hide" : "show" ) ) {

				// If there is dataShow left over from a stopped hide or show
				// and we are going to proceed with show, we should pretend to be hidden
				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
					hidden = true;
				} else {
					continue;
				}
			}
			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );

		// Any non-fx value stops us from restoring the original display value
		} else {
			display = undefined;
		}
	}

	if ( !jQuery.isEmptyObject( orig ) ) {
		if ( dataShow ) {
			if ( "hidden" in dataShow ) {
				hidden = dataShow.hidden;
			}
		} else {
			dataShow = jQuery._data( elem, "fxshow", {} );
		}

		// store state if its toggle - enables .stop().toggle() to "reverse"
		if ( toggle ) {
			dataShow.hidden = !hidden;
		}
		if ( hidden ) {
			jQuery( elem ).show();
		} else {
			anim.done( function() {
				jQuery( elem ).hide();
			} );
		}
		anim.done( function() {
			var prop;
			jQuery._removeData( elem, "fxshow" );
			for ( prop in orig ) {
				jQuery.style( elem, prop, orig[ prop ] );
			}
		} );
		for ( prop in orig ) {
			tween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );

			if ( !( prop in dataShow ) ) {
				dataShow[ prop ] = tween.start;
				if ( hidden ) {
					tween.end = tween.start;
					tween.start = prop === "width" || prop === "height" ? 1 : 0;
				}
			}
		}

	// If this is a noop like .hide().hide(), restore an overwritten display value
	} else if ( ( display === "none" ? defaultDisplay( elem.nodeName ) : display ) === "inline" ) {
		style.display = display;
	}
}

function propFilter( props, specialEasing ) {
	var index, name, easing, value, hooks;

	// camelCase, specialEasing and expand cssHook pass
	for ( index in props ) {
		name = jQuery.camelCase( index );
		easing = specialEasing[ name ];
		value = props[ index ];
		if ( jQuery.isArray( value ) ) {
			easing = value[ 1 ];
			value = props[ index ] = value[ 0 ];
		}

		if ( index !== name ) {
			props[ name ] = value;
			delete props[ index ];
		}

		hooks = jQuery.cssHooks[ name ];
		if ( hooks && "expand" in hooks ) {
			value = hooks.expand( value );
			delete props[ name ];

			// not quite $.extend, this wont overwrite keys already present.
			// also - reusing 'index' from above because we have the correct "name"
			for ( index in value ) {
				if ( !( index in props ) ) {
					props[ index ] = value[ index ];
					specialEasing[ index ] = easing;
				}
			}
		} else {
			specialEasing[ name ] = easing;
		}
	}
}

function Animation( elem, properties, options ) {
	var result,
		stopped,
		index = 0,
		length = Animation.prefilters.length,
		deferred = jQuery.Deferred().always( function() {

			// don't match elem in the :animated selector
			delete tick.elem;
		} ),
		tick = function() {
			if ( stopped ) {
				return false;
			}
			var currentTime = fxNow || createFxNow(),
				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),

				// Support: Android 2.3
				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
				temp = remaining / animation.duration || 0,
				percent = 1 - temp,
				index = 0,
				length = animation.tweens.length;

			for ( ; index < length ; index++ ) {
				animation.tweens[ index ].run( percent );
			}

			deferred.notifyWith( elem, [ animation, percent, remaining ] );

			if ( percent < 1 && length ) {
				return remaining;
			} else {
				deferred.resolveWith( elem, [ animation ] );
				return false;
			}
		},
		animation = deferred.promise( {
			elem: elem,
			props: jQuery.extend( {}, properties ),
			opts: jQuery.extend( true, {
				specialEasing: {},
				easing: jQuery.easing._default
			}, options ),
			originalProperties: properties,
			originalOptions: options,
			startTime: fxNow || createFxNow(),
			duration: options.duration,
			tweens: [],
			createTween: function( prop, end ) {
				var tween = jQuery.Tween( elem, animation.opts, prop, end,
						animation.opts.specialEasing[ prop ] || animation.opts.easing );
				animation.tweens.push( tween );
				return tween;
			},
			stop: function( gotoEnd ) {
				var index = 0,

					// if we are going to the end, we want to run all the tweens
					// otherwise we skip this part
					length = gotoEnd ? animation.tweens.length : 0;
				if ( stopped ) {
					return this;
				}
				stopped = true;
				for ( ; index < length ; index++ ) {
					animation.tweens[ index ].run( 1 );
				}

				// resolve when we played the last frame
				// otherwise, reject
				if ( gotoEnd ) {
					deferred.notifyWith( elem, [ animation, 1, 0 ] );
					deferred.resolveWith( elem, [ animation, gotoEnd ] );
				} else {
					deferred.rejectWith( elem, [ animation, gotoEnd ] );
				}
				return this;
			}
		} ),
		props = animation.props;

	propFilter( props, animation.opts.specialEasing );

	for ( ; index < length ; index++ ) {
		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
		if ( result ) {
			if ( jQuery.isFunction( result.stop ) ) {
				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
					jQuery.proxy( result.stop, result );
			}
			return result;
		}
	}

	jQuery.map( props, createTween, animation );

	if ( jQuery.isFunction( animation.opts.start ) ) {
		animation.opts.start.call( elem, animation );
	}

	jQuery.fx.timer(
		jQuery.extend( tick, {
			elem: elem,
			anim: animation,
			queue: animation.opts.queue
		} )
	);

	// attach callbacks from options
	return animation.progress( animation.opts.progress )
		.done( animation.opts.done, animation.opts.complete )
		.fail( animation.opts.fail )
		.always( animation.opts.always );
}

jQuery.Animation = jQuery.extend( Animation, {

	tweeners: {
		"*": [ function( prop, value ) {
			var tween = this.createTween( prop, value );
			adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
			return tween;
		} ]
	},

	tweener: function( props, callback ) {
		if ( jQuery.isFunction( props ) ) {
			callback = props;
			props = [ "*" ];
		} else {
			props = props.match( rnotwhite );
		}

		var prop,
			index = 0,
			length = props.length;

		for ( ; index < length ; index++ ) {
			prop = props[ index ];
			Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
			Animation.tweeners[ prop ].unshift( callback );
		}
	},

	prefilters: [ defaultPrefilter ],

	prefilter: function( callback, prepend ) {
		if ( prepend ) {
			Animation.prefilters.unshift( callback );
		} else {
			Animation.prefilters.push( callback );
		}
	}
} );

jQuery.speed = function( speed, easing, fn ) {
	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
		complete: fn || !fn && easing ||
			jQuery.isFunction( speed ) && speed,
		duration: speed,
		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
	};

	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
		opt.duration in jQuery.fx.speeds ?
			jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;

	// normalize opt.queue - true/undefined/null -> "fx"
	if ( opt.queue == null || opt.queue === true ) {
		opt.queue = "fx";
	}

	// Queueing
	opt.old = opt.complete;

	opt.complete = function() {
		if ( jQuery.isFunction( opt.old ) ) {
			opt.old.call( this );
		}

		if ( opt.queue ) {
			jQuery.dequeue( this, opt.queue );
		}
	};

	return opt;
};

jQuery.fn.extend( {
	fadeTo: function( speed, to, easing, callback ) {

		// show any hidden elements after setting opacity to 0
		return this.filter( isHidden ).css( "opacity", 0 ).show()

			// animate to the value specified
			.end().animate( { opacity: to }, speed, easing, callback );
	},
	animate: function( prop, speed, easing, callback ) {
		var empty = jQuery.isEmptyObject( prop ),
			optall = jQuery.speed( speed, easing, callback ),
			doAnimation = function() {

				// Operate on a copy of prop so per-property easing won't be lost
				var anim = Animation( this, jQuery.extend( {}, prop ), optall );

				// Empty animations, or finishing resolves immediately
				if ( empty || jQuery._data( this, "finish" ) ) {
					anim.stop( true );
				}
			};
			doAnimation.finish = doAnimation;

		return empty || optall.queue === false ?
			this.each( doAnimation ) :
			this.queue( optall.queue, doAnimation );
	},
	stop: function( type, clearQueue, gotoEnd ) {
		var stopQueue = function( hooks ) {
			var stop = hooks.stop;
			delete hooks.stop;
			stop( gotoEnd );
		};

		if ( typeof type !== "string" ) {
			gotoEnd = clearQueue;
			clearQueue = type;
			type = undefined;
		}
		if ( clearQueue && type !== false ) {
			this.queue( type || "fx", [] );
		}

		return this.each( function() {
			var dequeue = true,
				index = type != null && type + "queueHooks",
				timers = jQuery.timers,
				data = jQuery._data( this );

			if ( index ) {
				if ( data[ index ] && data[ index ].stop ) {
					stopQueue( data[ index ] );
				}
			} else {
				for ( index in data ) {
					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
						stopQueue( data[ index ] );
					}
				}
			}

			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this &&
					( type == null || timers[ index ].queue === type ) ) {

					timers[ index ].anim.stop( gotoEnd );
					dequeue = false;
					timers.splice( index, 1 );
				}
			}

			// start the next in the queue if the last step wasn't forced
			// timers currently will call their complete callbacks, which will dequeue
			// but only if they were gotoEnd
			if ( dequeue || !gotoEnd ) {
				jQuery.dequeue( this, type );
			}
		} );
	},
	finish: function( type ) {
		if ( type !== false ) {
			type = type || "fx";
		}
		return this.each( function() {
			var index,
				data = jQuery._data( this ),
				queue = data[ type + "queue" ],
				hooks = data[ type + "queueHooks" ],
				timers = jQuery.timers,
				length = queue ? queue.length : 0;

			// enable finishing flag on private data
			data.finish = true;

			// empty the queue first
			jQuery.queue( this, type, [] );

			if ( hooks && hooks.stop ) {
				hooks.stop.call( this, true );
			}

			// look for any active animations, and finish them
			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
					timers[ index ].anim.stop( true );
					timers.splice( index, 1 );
				}
			}

			// look for any animations in the old queue and finish them
			for ( index = 0; index < length; index++ ) {
				if ( queue[ index ] && queue[ index ].finish ) {
					queue[ index ].finish.call( this );
				}
			}

			// turn off finishing flag
			delete data.finish;
		} );
	}
} );

jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) {
	var cssFn = jQuery.fn[ name ];
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return speed == null || typeof speed === "boolean" ?
			cssFn.apply( this, arguments ) :
			this.animate( genFx( name, true ), speed, easing, callback );
	};
} );

// Generate shortcuts for custom animations
jQuery.each( {
	slideDown: genFx( "show" ),
	slideUp: genFx( "hide" ),
	slideToggle: genFx( "toggle" ),
	fadeIn: { opacity: "show" },
	fadeOut: { opacity: "hide" },
	fadeToggle: { opacity: "toggle" }
}, function( name, props ) {
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return this.animate( props, speed, easing, callback );
	};
} );

jQuery.timers = [];
jQuery.fx.tick = function() {
	var timer,
		timers = jQuery.timers,
		i = 0;

	fxNow = jQuery.now();

	for ( ; i < timers.length; i++ ) {
		timer = timers[ i ];

		// Checks the timer has not already been removed
		if ( !timer() && timers[ i ] === timer ) {
			timers.splice( i--, 1 );
		}
	}

	if ( !timers.length ) {
		jQuery.fx.stop();
	}
	fxNow = undefined;
};

jQuery.fx.timer = function( timer ) {
	jQuery.timers.push( timer );
	if ( timer() ) {
		jQuery.fx.start();
	} else {
		jQuery.timers.pop();
	}
};

jQuery.fx.interval = 13;

jQuery.fx.start = function() {
	if ( !timerId ) {
		timerId = window.setInterval( jQuery.fx.tick, jQuery.fx.interval );
	}
};

jQuery.fx.stop = function() {
	window.clearInterval( timerId );
	timerId = null;
};

jQuery.fx.speeds = {
	slow: 600,
	fast: 200,

	// Default speed
	_default: 400
};


// Based off of the plugin by Clint Helfers, with permission.
// http://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
jQuery.fn.delay = function( time, type ) {
	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
	type = type || "fx";

	return this.queue( type, function( next, hooks ) {
		var timeout = window.setTimeout( next, time );
		hooks.stop = function() {
			window.clearTimeout( timeout );
		};
	} );
};


( function() {
	var a,
		input = document.createElement( "input" ),
		div = document.createElement( "div" ),
		select = document.createElement( "select" ),
		opt = select.appendChild( document.createElement( "option" ) );

	// Setup
	div = document.createElement( "div" );
	div.setAttribute( "className", "t" );
	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
	a = div.getElementsByTagName( "a" )[ 0 ];

	// Support: Windows Web Apps (WWA)
	// `type` must use .setAttribute for WWA (#14901)
	input.setAttribute( "type", "checkbox" );
	div.appendChild( input );

	a = div.getElementsByTagName( "a" )[ 0 ];

	// First batch of tests.
	a.style.cssText = "top:1px";

	// Test setAttribute on camelCase class.
	// If it works, we need attrFixes when doing get/setAttribute (ie6/7)
	support.getSetAttribute = div.className !== "t";

	// Get the style information from getAttribute
	// (IE uses .cssText instead)
	support.style = /top/.test( a.getAttribute( "style" ) );

	// Make sure that URLs aren't manipulated
	// (IE normalizes it by default)
	support.hrefNormalized = a.getAttribute( "href" ) === "/a";

	// Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
	support.checkOn = !!input.value;

	// Make sure that a selected-by-default option has a working selected property.
	// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
	support.optSelected = opt.selected;

	// Tests for enctype support on a form (#6743)
	support.enctype = !!document.createElement( "form" ).enctype;

	// Make sure that the options inside disabled selects aren't marked as disabled
	// (WebKit marks them as disabled)
	select.disabled = true;
	support.optDisabled = !opt.disabled;

	// Support: IE8 only
	// Check if we can trust getAttribute("value")
	input = document.createElement( "input" );
	input.setAttribute( "value", "" );
	support.input = input.getAttribute( "value" ) === "";

	// Check if an input maintains its value after becoming a radio
	input.value = "t";
	input.setAttribute( "type", "radio" );
	support.radioValue = input.value === "t";
} )();


var rreturn = /\r/g,
	rspaces = /[\x20\t\r\n\f]+/g;

jQuery.fn.extend( {
	val: function( value ) {
		var hooks, ret, isFunction,
			elem = this[ 0 ];

		if ( !arguments.length ) {
			if ( elem ) {
				hooks = jQuery.valHooks[ elem.type ] ||
					jQuery.valHooks[ elem.nodeName.toLowerCase() ];

				if (
					hooks &&
					"get" in hooks &&
					( ret = hooks.get( elem, "value" ) ) !== undefined
				) {
					return ret;
				}

				ret = elem.value;

				return typeof ret === "string" ?

					// handle most common string cases
					ret.replace( rreturn, "" ) :

					// handle cases where value is null/undef or number
					ret == null ? "" : ret;
			}

			return;
		}

		isFunction = jQuery.isFunction( value );

		return this.each( function( i ) {
			var val;

			if ( this.nodeType !== 1 ) {
				return;
			}

			if ( isFunction ) {
				val = value.call( this, i, jQuery( this ).val() );
			} else {
				val = value;
			}

			// Treat null/undefined as ""; convert numbers to string
			if ( val == null ) {
				val = "";
			} else if ( typeof val === "number" ) {
				val += "";
			} else if ( jQuery.isArray( val ) ) {
				val = jQuery.map( val, function( value ) {
					return value == null ? "" : value + "";
				} );
			}

			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];

			// If set returns undefined, fall back to normal setting
			if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
				this.value = val;
			}
		} );
	}
} );

jQuery.extend( {
	valHooks: {
		option: {
			get: function( elem ) {
				var val = jQuery.find.attr( elem, "value" );
				return val != null ?
					val :

					// Support: IE10-11+
					// option.text throws exceptions (#14686, #14858)
					// Strip and collapse whitespace
					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
					jQuery.trim( jQuery.text( elem ) ).replace( rspaces, " " );
			}
		},
		select: {
			get: function( elem ) {
				var value, option,
					options = elem.options,
					index = elem.selectedIndex,
					one = elem.type === "select-one" || index < 0,
					values = one ? null : [],
					max = one ? index + 1 : options.length,
					i = index < 0 ?
						max :
						one ? index : 0;

				// Loop through all the selected options
				for ( ; i < max; i++ ) {
					option = options[ i ];

					// oldIE doesn't update selected after form reset (#2551)
					if ( ( option.selected || i === index ) &&

							// Don't return options that are disabled or in a disabled optgroup
							( support.optDisabled ?
								!option.disabled :
								option.getAttribute( "disabled" ) === null ) &&
							( !option.parentNode.disabled ||
								!jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {

						// Get the specific value for the option
						value = jQuery( option ).val();

						// We don't need an array for one selects
						if ( one ) {
							return value;
						}

						// Multi-Selects return an array
						values.push( value );
					}
				}

				return values;
			},

			set: function( elem, value ) {
				var optionSet, option,
					options = elem.options,
					values = jQuery.makeArray( value ),
					i = options.length;

				while ( i-- ) {
					option = options[ i ];

					if ( jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 ) {

						// Support: IE6
						// When new option element is added to select box we need to
						// force reflow of newly added node in order to workaround delay
						// of initialization properties
						try {
							option.selected = optionSet = true;

						} catch ( _ ) {

							// Will be executed only in IE6
							option.scrollHeight;
						}

					} else {
						option.selected = false;
					}
				}

				// Force browsers to behave consistently when non-matching value is set
				if ( !optionSet ) {
					elem.selectedIndex = -1;
				}

				return options;
			}
		}
	}
} );

// Radios and checkboxes getter/setter
jQuery.each( [ "radio", "checkbox" ], function() {
	jQuery.valHooks[ this ] = {
		set: function( elem, value ) {
			if ( jQuery.isArray( value ) ) {
				return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
			}
		}
	};
	if ( !support.checkOn ) {
		jQuery.valHooks[ this ].get = function( elem ) {
			return elem.getAttribute( "value" ) === null ? "on" : elem.value;
		};
	}
} );




var nodeHook, boolHook,
	attrHandle = jQuery.expr.attrHandle,
	ruseDefault = /^(?:checked|selected)$/i,
	getSetAttribute = support.getSetAttribute,
	getSetInput = support.input;

jQuery.fn.extend( {
	attr: function( name, value ) {
		return access( this, jQuery.attr, name, value, arguments.length > 1 );
	},

	removeAttr: function( name ) {
		return this.each( function() {
			jQuery.removeAttr( this, name );
		} );
	}
} );

jQuery.extend( {
	attr: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set attributes on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		// Fallback to prop when attributes are not supported
		if ( typeof elem.getAttribute === "undefined" ) {
			return jQuery.prop( elem, name, value );
		}

		// All attributes are lowercase
		// Grab necessary hook if one is defined
		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
			name = name.toLowerCase();
			hooks = jQuery.attrHooks[ name ] ||
				( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook );
		}

		if ( value !== undefined ) {
			if ( value === null ) {
				jQuery.removeAttr( elem, name );
				return;
			}

			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			elem.setAttribute( name, value + "" );
			return value;
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		ret = jQuery.find.attr( elem, name );

		// Non-existent attributes return null, we normalize to undefined
		return ret == null ? undefined : ret;
	},

	attrHooks: {
		type: {
			set: function( elem, value ) {
				if ( !support.radioValue && value === "radio" &&
					jQuery.nodeName( elem, "input" ) ) {

					// Setting the type on a radio button after the value resets the value in IE8-9
					// Reset value to default in case type is set after value during creation
					var val = elem.value;
					elem.setAttribute( "type", value );
					if ( val ) {
						elem.value = val;
					}
					return value;
				}
			}
		}
	},

	removeAttr: function( elem, value ) {
		var name, propName,
			i = 0,
			attrNames = value && value.match( rnotwhite );

		if ( attrNames && elem.nodeType === 1 ) {
			while ( ( name = attrNames[ i++ ] ) ) {
				propName = jQuery.propFix[ name ] || name;

				// Boolean attributes get special treatment (#10870)
				if ( jQuery.expr.match.bool.test( name ) ) {

					// Set corresponding property to false
					if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
						elem[ propName ] = false;

					// Support: IE<9
					// Also clear defaultChecked/defaultSelected (if appropriate)
					} else {
						elem[ jQuery.camelCase( "default-" + name ) ] =
							elem[ propName ] = false;
					}

				// See #9699 for explanation of this approach (setting first, then removal)
				} else {
					jQuery.attr( elem, name, "" );
				}

				elem.removeAttribute( getSetAttribute ? name : propName );
			}
		}
	}
} );

// Hooks for boolean attributes
boolHook = {
	set: function( elem, value, name ) {
		if ( value === false ) {

			// Remove boolean attributes when set to false
			jQuery.removeAttr( elem, name );
		} else if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {

			// IE<8 needs the *property* name
			elem.setAttribute( !getSetAttribute && jQuery.propFix[ name ] || name, name );

		} else {

			// Support: IE<9
			// Use defaultChecked and defaultSelected for oldIE
			elem[ jQuery.camelCase( "default-" + name ) ] = elem[ name ] = true;
		}
		return name;
	}
};

jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
	var getter = attrHandle[ name ] || jQuery.find.attr;

	if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
		attrHandle[ name ] = function( elem, name, isXML ) {
			var ret, handle;
			if ( !isXML ) {

				// Avoid an infinite loop by temporarily removing this function from the getter
				handle = attrHandle[ name ];
				attrHandle[ name ] = ret;
				ret = getter( elem, name, isXML ) != null ?
					name.toLowerCase() :
					null;
				attrHandle[ name ] = handle;
			}
			return ret;
		};
	} else {
		attrHandle[ name ] = function( elem, name, isXML ) {
			if ( !isXML ) {
				return elem[ jQuery.camelCase( "default-" + name ) ] ?
					name.toLowerCase() :
					null;
			}
		};
	}
} );

// fix oldIE attroperties
if ( !getSetInput || !getSetAttribute ) {
	jQuery.attrHooks.value = {
		set: function( elem, value, name ) {
			if ( jQuery.nodeName( elem, "input" ) ) {

				// Does not return so that setAttribute is also used
				elem.defaultValue = value;
			} else {

				// Use nodeHook if defined (#1954); otherwise setAttribute is fine
				return nodeHook && nodeHook.set( elem, value, name );
			}
		}
	};
}

// IE6/7 do not support getting/setting some attributes with get/setAttribute
if ( !getSetAttribute ) {

	// Use this for any attribute in IE6/7
	// This fixes almost every IE6/7 issue
	nodeHook = {
		set: function( elem, value, name ) {

			// Set the existing or create a new attribute node
			var ret = elem.getAttributeNode( name );
			if ( !ret ) {
				elem.setAttributeNode(
					( ret = elem.ownerDocument.createAttribute( name ) )
				);
			}

			ret.value = value += "";

			// Break association with cloned elements by also using setAttribute (#9646)
			if ( name === "value" || value === elem.getAttribute( name ) ) {
				return value;
			}
		}
	};

	// Some attributes are constructed with empty-string values when not defined
	attrHandle.id = attrHandle.name = attrHandle.coords =
		function( elem, name, isXML ) {
			var ret;
			if ( !isXML ) {
				return ( ret = elem.getAttributeNode( name ) ) && ret.value !== "" ?
					ret.value :
					null;
			}
		};

	// Fixing value retrieval on a button requires this module
	jQuery.valHooks.button = {
		get: function( elem, name ) {
			var ret = elem.getAttributeNode( name );
			if ( ret && ret.specified ) {
				return ret.value;
			}
		},
		set: nodeHook.set
	};

	// Set contenteditable to false on removals(#10429)
	// Setting to empty string throws an error as an invalid value
	jQuery.attrHooks.contenteditable = {
		set: function( elem, value, name ) {
			nodeHook.set( elem, value === "" ? false : value, name );
		}
	};

	// Set width and height to auto instead of 0 on empty string( Bug #8150 )
	// This is for removals
	jQuery.each( [ "width", "height" ], function( i, name ) {
		jQuery.attrHooks[ name ] = {
			set: function( elem, value ) {
				if ( value === "" ) {
					elem.setAttribute( name, "auto" );
					return value;
				}
			}
		};
	} );
}

if ( !support.style ) {
	jQuery.attrHooks.style = {
		get: function( elem ) {

			// Return undefined in the case of empty string
			// Note: IE uppercases css property names, but if we were to .toLowerCase()
			// .cssText, that would destroy case sensitivity in URL's, like in "background"
			return elem.style.cssText || undefined;
		},
		set: function( elem, value ) {
			return ( elem.style.cssText = value + "" );
		}
	};
}




var rfocusable = /^(?:input|select|textarea|button|object)$/i,
	rclickable = /^(?:a|area)$/i;

jQuery.fn.extend( {
	prop: function( name, value ) {
		return access( this, jQuery.prop, name, value, arguments.length > 1 );
	},

	removeProp: function( name ) {
		name = jQuery.propFix[ name ] || name;
		return this.each( function() {

			// try/catch handles cases where IE balks (such as removing a property on window)
			try {
				this[ name ] = undefined;
				delete this[ name ];
			} catch ( e ) {}
		} );
	}
} );

jQuery.extend( {
	prop: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set properties on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {

			// Fix name and attach hooks
			name = jQuery.propFix[ name ] || name;
			hooks = jQuery.propHooks[ name ];
		}

		if ( value !== undefined ) {
			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			return ( elem[ name ] = value );
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		return elem[ name ];
	},

	propHooks: {
		tabIndex: {
			get: function( elem ) {

				// elem.tabIndex doesn't always return the
				// correct value when it hasn't been explicitly set
				// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
				// Use proper attribute retrieval(#12072)
				var tabindex = jQuery.find.attr( elem, "tabindex" );

				return tabindex ?
					parseInt( tabindex, 10 ) :
					rfocusable.test( elem.nodeName ) ||
						rclickable.test( elem.nodeName ) && elem.href ?
							0 :
							-1;
			}
		}
	},

	propFix: {
		"for": "htmlFor",
		"class": "className"
	}
} );

// Some attributes require a special call on IE
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !support.hrefNormalized ) {

	// href/src property should get the full normalized URL (#10299/#12915)
	jQuery.each( [ "href", "src" ], function( i, name ) {
		jQuery.propHooks[ name ] = {
			get: function( elem ) {
				return elem.getAttribute( name, 4 );
			}
		};
	} );
}

// Support: Safari, IE9+
// Accessing the selectedIndex property
// forces the browser to respect setting selected
// on the option
// The getter ensures a default option is selected
// when in an optgroup
if ( !support.optSelected ) {
	jQuery.propHooks.selected = {
		get: function( elem ) {
			var parent = elem.parentNode;

			if ( parent ) {
				parent.selectedIndex;

				// Make sure that it also works with optgroups, see #5701
				if ( parent.parentNode ) {
					parent.parentNode.selectedIndex;
				}
			}
			return null;
		},
		set: function( elem ) {
			var parent = elem.parentNode;
			if ( parent ) {
				parent.selectedIndex;

				if ( parent.parentNode ) {
					parent.parentNode.selectedIndex;
				}
			}
		}
	};
}

jQuery.each( [
	"tabIndex",
	"readOnly",
	"maxLength",
	"cellSpacing",
	"cellPadding",
	"rowSpan",
	"colSpan",
	"useMap",
	"frameBorder",
	"contentEditable"
], function() {
	jQuery.propFix[ this.toLowerCase() ] = this;
} );

// IE6/7 call enctype encoding
if ( !support.enctype ) {
	jQuery.propFix.enctype = "encoding";
}




var rclass = /[\t\r\n\f]/g;

function getClass( elem ) {
	return jQuery.attr( elem, "class" ) || "";
}

jQuery.fn.extend( {
	addClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( jQuery.isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		if ( typeof value === "string" && value ) {
			classes = value.match( rnotwhite ) || [];

			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );
				cur = elem.nodeType === 1 &&
					( " " + curValue + " " ).replace( rclass, " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {
						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
							cur += clazz + " ";
						}
					}

					// only assign if different to avoid unneeded rendering.
					finalValue = jQuery.trim( cur );
					if ( curValue !== finalValue ) {
						jQuery.attr( elem, "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	removeClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( jQuery.isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		if ( !arguments.length ) {
			return this.attr( "class", "" );
		}

		if ( typeof value === "string" && value ) {
			classes = value.match( rnotwhite ) || [];

			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );

				// This expression is here for better compressibility (see addClass)
				cur = elem.nodeType === 1 &&
					( " " + curValue + " " ).replace( rclass, " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {

						// Remove *all* instances
						while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
							cur = cur.replace( " " + clazz + " ", " " );
						}
					}

					// Only assign if different to avoid unneeded rendering.
					finalValue = jQuery.trim( cur );
					if ( curValue !== finalValue ) {
						jQuery.attr( elem, "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	toggleClass: function( value, stateVal ) {
		var type = typeof value;

		if ( typeof stateVal === "boolean" && type === "string" ) {
			return stateVal ? this.addClass( value ) : this.removeClass( value );
		}

		if ( jQuery.isFunction( value ) ) {
			return this.each( function( i ) {
				jQuery( this ).toggleClass(
					value.call( this, i, getClass( this ), stateVal ),
					stateVal
				);
			} );
		}

		return this.each( function() {
			var className, i, self, classNames;

			if ( type === "string" ) {

				// Toggle individual class names
				i = 0;
				self = jQuery( this );
				classNames = value.match( rnotwhite ) || [];

				while ( ( className = classNames[ i++ ] ) ) {

					// Check each className given, space separated list
					if ( self.hasClass( className ) ) {
						self.removeClass( className );
					} else {
						self.addClass( className );
					}
				}

			// Toggle whole class name
			} else if ( value === undefined || type === "boolean" ) {
				className = getClass( this );
				if ( className ) {

					// store className if set
					jQuery._data( this, "__className__", className );
				}

				// If the element has a class name or if we're passed "false",
				// then remove the whole classname (if there was one, the above saved it).
				// Otherwise bring back whatever was previously saved (if anything),
				// falling back to the empty string if nothing was stored.
				jQuery.attr( this, "class",
					className || value === false ?
					"" :
					jQuery._data( this, "__className__" ) || ""
				);
			}
		} );
	},

	hasClass: function( selector ) {
		var className, elem,
			i = 0;

		className = " " + selector + " ";
		while ( ( elem = this[ i++ ] ) ) {
			if ( elem.nodeType === 1 &&
				( " " + getClass( elem ) + " " ).replace( rclass, " " )
					.indexOf( className ) > -1
			) {
				return true;
			}
		}

		return false;
	}
} );




// Return jQuery for attributes-only inclusion


jQuery.each( ( "blur focus focusin focusout load resize scroll unload click dblclick " +
	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
	"change select submit keydown keypress keyup error contextmenu" ).split( " " ),
	function( i, name ) {

	// Handle event binding
	jQuery.fn[ name ] = function( data, fn ) {
		return arguments.length > 0 ?
			this.on( name, null, data, fn ) :
			this.trigger( name );
	};
} );

jQuery.fn.extend( {
	hover: function( fnOver, fnOut ) {
		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
	}
} );


var location = window.location;

var nonce = jQuery.now();

var rquery = ( /\?/ );



var rvalidtokens = /(,)|(\[|{)|(}|])|"(?:[^"\\\r\n]|\\["\\\/bfnrt]|\\u[\da-fA-F]{4})*"\s*:?|true|false|null|-?(?!0\d)\d+(?:\.\d+|)(?:[eE][+-]?\d+|)/g;

jQuery.parseJSON = function( data ) {

	// Attempt to parse using the native JSON parser first
	if ( window.JSON && window.JSON.parse ) {

		// Support: Android 2.3
		// Workaround failure to string-cast null input
		return window.JSON.parse( data + "" );
	}

	var requireNonComma,
		depth = null,
		str = jQuery.trim( data + "" );

	// Guard against invalid (and possibly dangerous) input by ensuring that nothing remains
	// after removing valid tokens
	return str && !jQuery.trim( str.replace( rvalidtokens, function( token, comma, open, close ) {

		// Force termination if we see a misplaced comma
		if ( requireNonComma && comma ) {
			depth = 0;
		}

		// Perform no more replacements after returning to outermost depth
		if ( depth === 0 ) {
			return token;
		}

		// Commas must not follow "[", "{", or ","
		requireNonComma = open || comma;

		// Determine new depth
		// array/object open ("[" or "{"): depth += true - false (increment)
		// array/object close ("]" or "}"): depth += false - true (decrement)
		// other cases ("," or primitive): depth += true - true (numeric cast)
		depth += !close - !open;

		// Remove this token
		return "";
	} ) ) ?
		( Function( "return " + str ) )() :
		jQuery.error( "Invalid JSON: " + data );
};


// Cross-browser xml parsing
jQuery.parseXML = function( data ) {
	var xml, tmp;
	if ( !data || typeof data !== "string" ) {
		return null;
	}
	try {
		if ( window.DOMParser ) { // Standard
			tmp = new window.DOMParser();
			xml = tmp.parseFromString( data, "text/xml" );
		} else { // IE
			xml = new window.ActiveXObject( "Microsoft.XMLDOM" );
			xml.async = "false";
			xml.loadXML( data );
		}
	} catch ( e ) {
		xml = undefined;
	}
	if ( !xml || !xml.documentElement || xml.getElementsByTagName( "parsererror" ).length ) {
		jQuery.error( "Invalid XML: " + data );
	}
	return xml;
};


var
	rhash = /#.*$/,
	rts = /([?&])_=[^&]*/,

	// IE leaves an \r character at EOL
	rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg,

	// #7653, #8125, #8152: local protocol detection
	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
	rnoContent = /^(?:GET|HEAD)$/,
	rprotocol = /^\/\//,
	rurl = /^([\w.+-]+:)(?:\/\/(?:[^\/?#]*@|)([^\/?#:]*)(?::(\d+)|)|)/,

	/* Prefilters
	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
	 * 2) These are called:
	 *    - BEFORE asking for a transport
	 *    - AFTER param serialization (s.data is a string if s.processData is true)
	 * 3) key is the dataType
	 * 4) the catchall symbol "*" can be used
	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
	 */
	prefilters = {},

	/* Transports bindings
	 * 1) key is the dataType
	 * 2) the catchall symbol "*" can be used
	 * 3) selection will start with transport dataType and THEN go to "*" if needed
	 */
	transports = {},

	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
	allTypes = "*/".concat( "*" ),

	// Document location
	ajaxLocation = location.href,

	// Segment location into parts
	ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || [];

// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
function addToPrefiltersOrTransports( structure ) {

	// dataTypeExpression is optional and defaults to "*"
	return function( dataTypeExpression, func ) {

		if ( typeof dataTypeExpression !== "string" ) {
			func = dataTypeExpression;
			dataTypeExpression = "*";
		}

		var dataType,
			i = 0,
			dataTypes = dataTypeExpression.toLowerCase().match( rnotwhite ) || [];

		if ( jQuery.isFunction( func ) ) {

			// For each dataType in the dataTypeExpression
			while ( ( dataType = dataTypes[ i++ ] ) ) {

				// Prepend if requested
				if ( dataType.charAt( 0 ) === "+" ) {
					dataType = dataType.slice( 1 ) || "*";
					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );

				// Otherwise append
				} else {
					( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
				}
			}
		}
	};
}

// Base inspection function for prefilters and transports
function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {

	var inspected = {},
		seekingTransport = ( structure === transports );

	function inspect( dataType ) {
		var selected;
		inspected[ dataType ] = true;
		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
			if ( typeof dataTypeOrTransport === "string" &&
				!seekingTransport && !inspected[ dataTypeOrTransport ] ) {

				options.dataTypes.unshift( dataTypeOrTransport );
				inspect( dataTypeOrTransport );
				return false;
			} else if ( seekingTransport ) {
				return !( selected = dataTypeOrTransport );
			}
		} );
		return selected;
	}

	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
}

// A special extend for ajax options
// that takes "flat" options (not to be deep extended)
// Fixes #9887
function ajaxExtend( target, src ) {
	var deep, key,
		flatOptions = jQuery.ajaxSettings.flatOptions || {};

	for ( key in src ) {
		if ( src[ key ] !== undefined ) {
			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
		}
	}
	if ( deep ) {
		jQuery.extend( true, target, deep );
	}

	return target;
}

/* Handles responses to an ajax request:
 * - finds the right dataType (mediates between content-type and expected dataType)
 * - returns the corresponding response
 */
function ajaxHandleResponses( s, jqXHR, responses ) {
	var firstDataType, ct, finalDataType, type,
		contents = s.contents,
		dataTypes = s.dataTypes;

	// Remove auto dataType and get content-type in the process
	while ( dataTypes[ 0 ] === "*" ) {
		dataTypes.shift();
		if ( ct === undefined ) {
			ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
		}
	}

	// Check if we're dealing with a known content-type
	if ( ct ) {
		for ( type in contents ) {
			if ( contents[ type ] && contents[ type ].test( ct ) ) {
				dataTypes.unshift( type );
				break;
			}
		}
	}

	// Check to see if we have a response for the expected dataType
	if ( dataTypes[ 0 ] in responses ) {
		finalDataType = dataTypes[ 0 ];
	} else {

		// Try convertible dataTypes
		for ( type in responses ) {
			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
				finalDataType = type;
				break;
			}
			if ( !firstDataType ) {
				firstDataType = type;
			}
		}

		// Or just use first one
		finalDataType = finalDataType || firstDataType;
	}

	// If we found a dataType
	// We add the dataType to the list if needed
	// and return the corresponding response
	if ( finalDataType ) {
		if ( finalDataType !== dataTypes[ 0 ] ) {
			dataTypes.unshift( finalDataType );
		}
		return responses[ finalDataType ];
	}
}

/* Chain conversions given the request and the original response
 * Also sets the responseXXX fields on the jqXHR instance
 */
function ajaxConvert( s, response, jqXHR, isSuccess ) {
	var conv2, current, conv, tmp, prev,
		converters = {},

		// Work with a copy of dataTypes in case we need to modify it for conversion
		dataTypes = s.dataTypes.slice();

	// Create converters map with lowercased keys
	if ( dataTypes[ 1 ] ) {
		for ( conv in s.converters ) {
			converters[ conv.toLowerCase() ] = s.converters[ conv ];
		}
	}

	current = dataTypes.shift();

	// Convert to each sequential dataType
	while ( current ) {

		if ( s.responseFields[ current ] ) {
			jqXHR[ s.responseFields[ current ] ] = response;
		}

		// Apply the dataFilter if provided
		if ( !prev && isSuccess && s.dataFilter ) {
			response = s.dataFilter( response, s.dataType );
		}

		prev = current;
		current = dataTypes.shift();

		if ( current ) {

			// There's only work to do if current dataType is non-auto
			if ( current === "*" ) {

				current = prev;

			// Convert response if prev dataType is non-auto and differs from current
			} else if ( prev !== "*" && prev !== current ) {

				// Seek a direct converter
				conv = converters[ prev + " " + current ] || converters[ "* " + current ];

				// If none found, seek a pair
				if ( !conv ) {
					for ( conv2 in converters ) {

						// If conv2 outputs current
						tmp = conv2.split( " " );
						if ( tmp[ 1 ] === current ) {

							// If prev can be converted to accepted input
							conv = converters[ prev + " " + tmp[ 0 ] ] ||
								converters[ "* " + tmp[ 0 ] ];
							if ( conv ) {

								// Condense equivalence converters
								if ( conv === true ) {
									conv = converters[ conv2 ];

								// Otherwise, insert the intermediate dataType
								} else if ( converters[ conv2 ] !== true ) {
									current = tmp[ 0 ];
									dataTypes.unshift( tmp[ 1 ] );
								}
								break;
							}
						}
					}
				}

				// Apply converter (if not an equivalence)
				if ( conv !== true ) {

					// Unless errors are allowed to bubble, catch and return them
					if ( conv && s[ "throws" ] ) { // jscs:ignore requireDotNotation
						response = conv( response );
					} else {
						try {
							response = conv( response );
						} catch ( e ) {
							return {
								state: "parsererror",
								error: conv ? e : "No conversion from " + prev + " to " + current
							};
						}
					}
				}
			}
		}
	}

	return { state: "success", data: response };
}

jQuery.extend( {

	// Counter for holding the number of active queries
	active: 0,

	// Last-Modified header cache for next request
	lastModified: {},
	etag: {},

	ajaxSettings: {
		url: ajaxLocation,
		type: "GET",
		isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
		global: true,
		processData: true,
		async: true,
		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
		/*
		timeout: 0,
		data: null,
		dataType: null,
		username: null,
		password: null,
		cache: null,
		throws: false,
		traditional: false,
		headers: {},
		*/

		accepts: {
			"*": allTypes,
			text: "text/plain",
			html: "text/html",
			xml: "application/xml, text/xml",
			json: "application/json, text/javascript"
		},

		contents: {
			xml: /\bxml\b/,
			html: /\bhtml/,
			json: /\bjson\b/
		},

		responseFields: {
			xml: "responseXML",
			text: "responseText",
			json: "responseJSON"
		},

		// Data converters
		// Keys separate source (or catchall "*") and destination types with a single space
		converters: {

			// Convert anything to text
			"* text": String,

			// Text to html (true = no transformation)
			"text html": true,

			// Evaluate text as a json expression
			"text json": jQuery.parseJSON,

			// Parse text as xml
			"text xml": jQuery.parseXML
		},

		// For options that shouldn't be deep extended:
		// you can add your own custom options here if
		// and when you create one that shouldn't be
		// deep extended (see ajaxExtend)
		flatOptions: {
			url: true,
			context: true
		}
	},

	// Creates a full fledged settings object into target
	// with both ajaxSettings and settings fields.
	// If target is omitted, writes into ajaxSettings.
	ajaxSetup: function( target, settings ) {
		return settings ?

			// Building a settings object
			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :

			// Extending ajaxSettings
			ajaxExtend( jQuery.ajaxSettings, target );
	},

	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
	ajaxTransport: addToPrefiltersOrTransports( transports ),

	// Main method
	ajax: function( url, options ) {

		// If url is an object, simulate pre-1.5 signature
		if ( typeof url === "object" ) {
			options = url;
			url = undefined;
		}

		// Force options to be an object
		options = options || {};

		var

			// Cross-domain detection vars
			parts,

			// Loop variable
			i,

			// URL without anti-cache param
			cacheURL,

			// Response headers as string
			responseHeadersString,

			// timeout handle
			timeoutTimer,

			// To know if global events are to be dispatched
			fireGlobals,

			transport,

			// Response headers
			responseHeaders,

			// Create the final options object
			s = jQuery.ajaxSetup( {}, options ),

			// Callbacks context
			callbackContext = s.context || s,

			// Context for global events is callbackContext if it is a DOM node or jQuery collection
			globalEventContext = s.context &&
				( callbackContext.nodeType || callbackContext.jquery ) ?
					jQuery( callbackContext ) :
					jQuery.event,

			// Deferreds
			deferred = jQuery.Deferred(),
			completeDeferred = jQuery.Callbacks( "once memory" ),

			// Status-dependent callbacks
			statusCode = s.statusCode || {},

			// Headers (they are sent all at once)
			requestHeaders = {},
			requestHeadersNames = {},

			// The jqXHR state
			state = 0,

			// Default abort message
			strAbort = "canceled",

			// Fake xhr
			jqXHR = {
				readyState: 0,

				// Builds headers hashtable if needed
				getResponseHeader: function( key ) {
					var match;
					if ( state === 2 ) {
						if ( !responseHeaders ) {
							responseHeaders = {};
							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
								responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
							}
						}
						match = responseHeaders[ key.toLowerCase() ];
					}
					return match == null ? null : match;
				},

				// Raw string
				getAllResponseHeaders: function() {
					return state === 2 ? responseHeadersString : null;
				},

				// Caches the header
				setRequestHeader: function( name, value ) {
					var lname = name.toLowerCase();
					if ( !state ) {
						name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
						requestHeaders[ name ] = value;
					}
					return this;
				},

				// Overrides response content-type header
				overrideMimeType: function( type ) {
					if ( !state ) {
						s.mimeType = type;
					}
					return this;
				},

				// Status-dependent callbacks
				statusCode: function( map ) {
					var code;
					if ( map ) {
						if ( state < 2 ) {
							for ( code in map ) {

								// Lazy-add the new callback in a way that preserves old ones
								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
							}
						} else {

							// Execute the appropriate callbacks
							jqXHR.always( map[ jqXHR.status ] );
						}
					}
					return this;
				},

				// Cancel the request
				abort: function( statusText ) {
					var finalText = statusText || strAbort;
					if ( transport ) {
						transport.abort( finalText );
					}
					done( 0, finalText );
					return this;
				}
			};

		// Attach deferreds
		deferred.promise( jqXHR ).complete = completeDeferred.add;
		jqXHR.success = jqXHR.done;
		jqXHR.error = jqXHR.fail;

		// Remove hash character (#7531: and string promotion)
		// Add protocol if not provided (#5866: IE7 issue with protocol-less urls)
		// Handle falsy url in the settings object (#10093: consistency with old signature)
		// We also use the url parameter if available
		s.url = ( ( url || s.url || ajaxLocation ) + "" )
			.replace( rhash, "" )
			.replace( rprotocol, ajaxLocParts[ 1 ] + "//" );

		// Alias method option to type as per ticket #12004
		s.type = options.method || options.type || s.method || s.type;

		// Extract dataTypes list
		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ];

		// A cross-domain request is in order when we have a protocol:host:port mismatch
		if ( s.crossDomain == null ) {
			parts = rurl.exec( s.url.toLowerCase() );
			s.crossDomain = !!( parts &&
				( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] ||
					( parts[ 3 ] || ( parts[ 1 ] === "http:" ? "80" : "443" ) ) !==
						( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? "80" : "443" ) ) )
			);
		}

		// Convert data if not already a string
		if ( s.data && s.processData && typeof s.data !== "string" ) {
			s.data = jQuery.param( s.data, s.traditional );
		}

		// Apply prefilters
		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );

		// If request was aborted inside a prefilter, stop there
		if ( state === 2 ) {
			return jqXHR;
		}

		// We can fire global events as of now if asked to
		// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
		fireGlobals = jQuery.event && s.global;

		// Watch for a new set of requests
		if ( fireGlobals && jQuery.active++ === 0 ) {
			jQuery.event.trigger( "ajaxStart" );
		}

		// Uppercase the type
		s.type = s.type.toUpperCase();

		// Determine if request has content
		s.hasContent = !rnoContent.test( s.type );

		// Save the URL in case we're toying with the If-Modified-Since
		// and/or If-None-Match header later on
		cacheURL = s.url;

		// More options handling for requests with no content
		if ( !s.hasContent ) {

			// If data is available, append data to url
			if ( s.data ) {
				cacheURL = ( s.url += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data );

				// #9682: remove data so that it's not used in an eventual retry
				delete s.data;
			}

			// Add anti-cache in url if needed
			if ( s.cache === false ) {
				s.url = rts.test( cacheURL ) ?

					// If there is already a '_' parameter, set its value
					cacheURL.replace( rts, "$1_=" + nonce++ ) :

					// Otherwise add one to the end
					cacheURL + ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + nonce++;
			}
		}

		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
		if ( s.ifModified ) {
			if ( jQuery.lastModified[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
			}
			if ( jQuery.etag[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
			}
		}

		// Set the correct header, if data is being sent
		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
			jqXHR.setRequestHeader( "Content-Type", s.contentType );
		}

		// Set the Accepts header for the server, depending on the dataType
		jqXHR.setRequestHeader(
			"Accept",
			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
				s.accepts[ s.dataTypes[ 0 ] ] +
					( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
				s.accepts[ "*" ]
		);

		// Check for headers option
		for ( i in s.headers ) {
			jqXHR.setRequestHeader( i, s.headers[ i ] );
		}

		// Allow custom headers/mimetypes and early abort
		if ( s.beforeSend &&
			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {

			// Abort if not done already and return
			return jqXHR.abort();
		}

		// aborting is no longer a cancellation
		strAbort = "abort";

		// Install callbacks on deferreds
		for ( i in { success: 1, error: 1, complete: 1 } ) {
			jqXHR[ i ]( s[ i ] );
		}

		// Get transport
		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );

		// If no transport, we auto-abort
		if ( !transport ) {
			done( -1, "No Transport" );
		} else {
			jqXHR.readyState = 1;

			// Send global event
			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
			}

			// If request was aborted inside ajaxSend, stop there
			if ( state === 2 ) {
				return jqXHR;
			}

			// Timeout
			if ( s.async && s.timeout > 0 ) {
				timeoutTimer = window.setTimeout( function() {
					jqXHR.abort( "timeout" );
				}, s.timeout );
			}

			try {
				state = 1;
				transport.send( requestHeaders, done );
			} catch ( e ) {

				// Propagate exception as error if not done
				if ( state < 2 ) {
					done( -1, e );

				// Simply rethrow otherwise
				} else {
					throw e;
				}
			}
		}

		// Callback for when everything is done
		function done( status, nativeStatusText, responses, headers ) {
			var isSuccess, success, error, response, modified,
				statusText = nativeStatusText;

			// Called once
			if ( state === 2 ) {
				return;
			}

			// State is "done" now
			state = 2;

			// Clear timeout if it exists
			if ( timeoutTimer ) {
				window.clearTimeout( timeoutTimer );
			}

			// Dereference transport for early garbage collection
			// (no matter how long the jqXHR object will be used)
			transport = undefined;

			// Cache response headers
			responseHeadersString = headers || "";

			// Set readyState
			jqXHR.readyState = status > 0 ? 4 : 0;

			// Determine if successful
			isSuccess = status >= 200 && status < 300 || status === 304;

			// Get response data
			if ( responses ) {
				response = ajaxHandleResponses( s, jqXHR, responses );
			}

			// Convert no matter what (that way responseXXX fields are always set)
			response = ajaxConvert( s, response, jqXHR, isSuccess );

			// If successful, handle type chaining
			if ( isSuccess ) {

				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
				if ( s.ifModified ) {
					modified = jqXHR.getResponseHeader( "Last-Modified" );
					if ( modified ) {
						jQuery.lastModified[ cacheURL ] = modified;
					}
					modified = jqXHR.getResponseHeader( "etag" );
					if ( modified ) {
						jQuery.etag[ cacheURL ] = modified;
					}
				}

				// if no content
				if ( status === 204 || s.type === "HEAD" ) {
					statusText = "nocontent";

				// if not modified
				} else if ( status === 304 ) {
					statusText = "notmodified";

				// If we have data, let's convert it
				} else {
					statusText = response.state;
					success = response.data;
					error = response.error;
					isSuccess = !error;
				}
			} else {

				// We extract error from statusText
				// then normalize statusText and status for non-aborts
				error = statusText;
				if ( status || !statusText ) {
					statusText = "error";
					if ( status < 0 ) {
						status = 0;
					}
				}
			}

			// Set data for the fake xhr object
			jqXHR.status = status;
			jqXHR.statusText = ( nativeStatusText || statusText ) + "";

			// Success/Error
			if ( isSuccess ) {
				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
			} else {
				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
			}

			// Status-dependent callbacks
			jqXHR.statusCode( statusCode );
			statusCode = undefined;

			if ( fireGlobals ) {
				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
					[ jqXHR, s, isSuccess ? success : error ] );
			}

			// Complete
			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );

			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );

				// Handle the global AJAX counter
				if ( !( --jQuery.active ) ) {
					jQuery.event.trigger( "ajaxStop" );
				}
			}
		}

		return jqXHR;
	},

	getJSON: function( url, data, callback ) {
		return jQuery.get( url, data, callback, "json" );
	},

	getScript: function( url, callback ) {
		return jQuery.get( url, undefined, callback, "script" );
	}
} );

jQuery.each( [ "get", "post" ], function( i, method ) {
	jQuery[ method ] = function( url, data, callback, type ) {

		// shift arguments if data argument was omitted
		if ( jQuery.isFunction( data ) ) {
			type = type || callback;
			callback = data;
			data = undefined;
		}

		// The url can be an options object (which then must have .url)
		return jQuery.ajax( jQuery.extend( {
			url: url,
			type: method,
			dataType: type,
			data: data,
			success: callback
		}, jQuery.isPlainObject( url ) && url ) );
	};
} );


jQuery._evalUrl = function( url ) {
	return jQuery.ajax( {
		url: url,

		// Make this explicit, since user can override this through ajaxSetup (#11264)
		type: "GET",
		dataType: "script",
		cache: true,
		async: false,
		global: false,
		"throws": true
	} );
};


jQuery.fn.extend( {
	wrapAll: function( html ) {
		if ( jQuery.isFunction( html ) ) {
			return this.each( function( i ) {
				jQuery( this ).wrapAll( html.call( this, i ) );
			} );
		}

		if ( this[ 0 ] ) {

			// The elements to wrap the target around
			var wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );

			if ( this[ 0 ].parentNode ) {
				wrap.insertBefore( this[ 0 ] );
			}

			wrap.map( function() {
				var elem = this;

				while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
					elem = elem.firstChild;
				}

				return elem;
			} ).append( this );
		}

		return this;
	},

	wrapInner: function( html ) {
		if ( jQuery.isFunction( html ) ) {
			return this.each( function( i ) {
				jQuery( this ).wrapInner( html.call( this, i ) );
			} );
		}

		return this.each( function() {
			var self = jQuery( this ),
				contents = self.contents();

			if ( contents.length ) {
				contents.wrapAll( html );

			} else {
				self.append( html );
			}
		} );
	},

	wrap: function( html ) {
		var isFunction = jQuery.isFunction( html );

		return this.each( function( i ) {
			jQuery( this ).wrapAll( isFunction ? html.call( this, i ) : html );
		} );
	},

	unwrap: function() {
		return this.parent().each( function() {
			if ( !jQuery.nodeName( this, "body" ) ) {
				jQuery( this ).replaceWith( this.childNodes );
			}
		} ).end();
	}
} );


function getDisplay( elem ) {
	return elem.style && elem.style.display || jQuery.css( elem, "display" );
}

function filterHidden( elem ) {

	// Disconnected elements are considered hidden
	if ( !jQuery.contains( elem.ownerDocument || document, elem ) ) {
		return true;
	}
	while ( elem && elem.nodeType === 1 ) {
		if ( getDisplay( elem ) === "none" || elem.type === "hidden" ) {
			return true;
		}
		elem = elem.parentNode;
	}
	return false;
}

jQuery.expr.filters.hidden = function( elem ) {

	// Support: Opera <= 12.12
	// Opera reports offsetWidths and offsetHeights less than zero on some elements
	return support.reliableHiddenOffsets() ?
		( elem.offsetWidth <= 0 && elem.offsetHeight <= 0 &&
			!elem.getClientRects().length ) :
			filterHidden( elem );
};

jQuery.expr.filters.visible = function( elem ) {
	return !jQuery.expr.filters.hidden( elem );
};




var r20 = /%20/g,
	rbracket = /\[\]$/,
	rCRLF = /\r?\n/g,
	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
	rsubmittable = /^(?:input|select|textarea|keygen)/i;

function buildParams( prefix, obj, traditional, add ) {
	var name;

	if ( jQuery.isArray( obj ) ) {

		// Serialize array item.
		jQuery.each( obj, function( i, v ) {
			if ( traditional || rbracket.test( prefix ) ) {

				// Treat each array item as a scalar.
				add( prefix, v );

			} else {

				// Item is non-scalar (array or object), encode its numeric index.
				buildParams(
					prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
					v,
					traditional,
					add
				);
			}
		} );

	} else if ( !traditional && jQuery.type( obj ) === "object" ) {

		// Serialize object item.
		for ( name in obj ) {
			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
		}

	} else {

		// Serialize scalar item.
		add( prefix, obj );
	}
}

// Serialize an array of form elements or a set of
// key/values into a query string
jQuery.param = function( a, traditional ) {
	var prefix,
		s = [],
		add = function( key, value ) {

			// If value is a function, invoke it and return its value
			value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
			s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
		};

	// Set traditional to true for jQuery <= 1.3.2 behavior.
	if ( traditional === undefined ) {
		traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
	}

	// If an array was passed in, assume that it is an array of form elements.
	if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {

		// Serialize the form elements
		jQuery.each( a, function() {
			add( this.name, this.value );
		} );

	} else {

		// If traditional, encode the "old" way (the way 1.3.2 or older
		// did it), otherwise encode params recursively.
		for ( prefix in a ) {
			buildParams( prefix, a[ prefix ], traditional, add );
		}
	}

	// Return the resulting serialization
	return s.join( "&" ).replace( r20, "+" );
};

jQuery.fn.extend( {
	serialize: function() {
		return jQuery.param( this.serializeArray() );
	},
	serializeArray: function() {
		return this.map( function() {

			// Can add propHook for "elements" to filter or add form elements
			var elements = jQuery.prop( this, "elements" );
			return elements ? jQuery.makeArray( elements ) : this;
		} )
		.filter( function() {
			var type = this.type;

			// Use .is(":disabled") so that fieldset[disabled] works
			return this.name && !jQuery( this ).is( ":disabled" ) &&
				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
				( this.checked || !rcheckableType.test( type ) );
		} )
		.map( function( i, elem ) {
			var val = jQuery( this ).val();

			return val == null ?
				null :
				jQuery.isArray( val ) ?
					jQuery.map( val, function( val ) {
						return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
					} ) :
					{ name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
		} ).get();
	}
} );


// Create the request object
// (This is still attached to ajaxSettings for backward compatibility)
jQuery.ajaxSettings.xhr = window.ActiveXObject !== undefined ?

	// Support: IE6-IE8
	function() {

		// XHR cannot access local files, always use ActiveX for that case
		if ( this.isLocal ) {
			return createActiveXHR();
		}

		// Support: IE 9-11
		// IE seems to error on cross-domain PATCH requests when ActiveX XHR
		// is used. In IE 9+ always use the native XHR.
		// Note: this condition won't catch Edge as it doesn't define
		// document.documentMode but it also doesn't support ActiveX so it won't
		// reach this code.
		if ( document.documentMode > 8 ) {
			return createStandardXHR();
		}

		// Support: IE<9
		// oldIE XHR does not support non-RFC2616 methods (#13240)
		// See http://msdn.microsoft.com/en-us/library/ie/ms536648(v=vs.85).aspx
		// and http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9
		// Although this check for six methods instead of eight
		// since IE also does not support "trace" and "connect"
		return /^(get|post|head|put|delete|options)$/i.test( this.type ) &&
			createStandardXHR() || createActiveXHR();
	} :

	// For all other browsers, use the standard XMLHttpRequest object
	createStandardXHR;

var xhrId = 0,
	xhrCallbacks = {},
	xhrSupported = jQuery.ajaxSettings.xhr();

// Support: IE<10
// Open requests must be manually aborted on unload (#5280)
// See https://support.microsoft.com/kb/2856746 for more info
if ( window.attachEvent ) {
	window.attachEvent( "onunload", function() {
		for ( var key in xhrCallbacks ) {
			xhrCallbacks[ key ]( undefined, true );
		}
	} );
}

// Determine support properties
support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
xhrSupported = support.ajax = !!xhrSupported;

// Create transport if the browser can provide an xhr
if ( xhrSupported ) {

	jQuery.ajaxTransport( function( options ) {

		// Cross domain only allowed if supported through XMLHttpRequest
		if ( !options.crossDomain || support.cors ) {

			var callback;

			return {
				send: function( headers, complete ) {
					var i,
						xhr = options.xhr(),
						id = ++xhrId;

					// Open the socket
					xhr.open(
						options.type,
						options.url,
						options.async,
						options.username,
						options.password
					);

					// Apply custom fields if provided
					if ( options.xhrFields ) {
						for ( i in options.xhrFields ) {
							xhr[ i ] = options.xhrFields[ i ];
						}
					}

					// Override mime type if needed
					if ( options.mimeType && xhr.overrideMimeType ) {
						xhr.overrideMimeType( options.mimeType );
					}

					// X-Requested-With header
					// For cross-domain requests, seeing as conditions for a preflight are
					// akin to a jigsaw puzzle, we simply never set it to be sure.
					// (it can always be set on a per-request basis or even using ajaxSetup)
					// For same-domain requests, won't change header if already provided.
					if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
						headers[ "X-Requested-With" ] = "XMLHttpRequest";
					}

					// Set headers
					for ( i in headers ) {

						// Support: IE<9
						// IE's ActiveXObject throws a 'Type Mismatch' exception when setting
						// request header to a null-value.
						//
						// To keep consistent with other XHR implementations, cast the value
						// to string and ignore `undefined`.
						if ( headers[ i ] !== undefined ) {
							xhr.setRequestHeader( i, headers[ i ] + "" );
						}
					}

					// Do send the request
					// This may raise an exception which is actually
					// handled in jQuery.ajax (so no try/catch here)
					xhr.send( ( options.hasContent && options.data ) || null );

					// Listener
					callback = function( _, isAbort ) {
						var status, statusText, responses;

						// Was never called and is aborted or complete
						if ( callback && ( isAbort || xhr.readyState === 4 ) ) {

							// Clean up
							delete xhrCallbacks[ id ];
							callback = undefined;
							xhr.onreadystatechange = jQuery.noop;

							// Abort manually if needed
							if ( isAbort ) {
								if ( xhr.readyState !== 4 ) {
									xhr.abort();
								}
							} else {
								responses = {};
								status = xhr.status;

								// Support: IE<10
								// Accessing binary-data responseText throws an exception
								// (#11426)
								if ( typeof xhr.responseText === "string" ) {
									responses.text = xhr.responseText;
								}

								// Firefox throws an exception when accessing
								// statusText for faulty cross-domain requests
								try {
									statusText = xhr.statusText;
								} catch ( e ) {

									// We normalize with Webkit giving an empty statusText
									statusText = "";
								}

								// Filter status for non standard behaviors

								// If the request is local and we have data: assume a success
								// (success with no data won't get notified, that's the best we
								// can do given current implementations)
								if ( !status && options.isLocal && !options.crossDomain ) {
									status = responses.text ? 200 : 404;

								// IE - #1450: sometimes returns 1223 when it should be 204
								} else if ( status === 1223 ) {
									status = 204;
								}
							}
						}

						// Call complete if needed
						if ( responses ) {
							complete( status, statusText, responses, xhr.getAllResponseHeaders() );
						}
					};

					// Do send the request
					// `xhr.send` may raise an exception, but it will be
					// handled in jQuery.ajax (so no try/catch here)
					if ( !options.async ) {

						// If we're in sync mode we fire the callback
						callback();
					} else if ( xhr.readyState === 4 ) {

						// (IE6 & IE7) if it's in cache and has been
						// retrieved directly we need to fire the callback
						window.setTimeout( callback );
					} else {

						// Register the callback, but delay it in case `xhr.send` throws
						// Add to the list of active xhr callbacks
						xhr.onreadystatechange = xhrCallbacks[ id ] = callback;
					}
				},

				abort: function() {
					if ( callback ) {
						callback( undefined, true );
					}
				}
			};
		}
	} );
}

// Functions to create xhrs
function createStandardXHR() {
	try {
		return new window.XMLHttpRequest();
	} catch ( e ) {}
}

function createActiveXHR() {
	try {
		return new window.ActiveXObject( "Microsoft.XMLHTTP" );
	} catch ( e ) {}
}




// Install script dataType
jQuery.ajaxSetup( {
	accepts: {
		script: "text/javascript, application/javascript, " +
			"application/ecmascript, application/x-ecmascript"
	},
	contents: {
		script: /\b(?:java|ecma)script\b/
	},
	converters: {
		"text script": function( text ) {
			jQuery.globalEval( text );
			return text;
		}
	}
} );

// Handle cache's special case and global
jQuery.ajaxPrefilter( "script", function( s ) {
	if ( s.cache === undefined ) {
		s.cache = false;
	}
	if ( s.crossDomain ) {
		s.type = "GET";
		s.global = false;
	}
} );

// Bind script tag hack transport
jQuery.ajaxTransport( "script", function( s ) {

	// This transport only deals with cross domain requests
	if ( s.crossDomain ) {

		var script,
			head = document.head || jQuery( "head" )[ 0 ] || document.documentElement;

		return {

			send: function( _, callback ) {

				script = document.createElement( "script" );

				script.async = true;

				if ( s.scriptCharset ) {
					script.charset = s.scriptCharset;
				}

				script.src = s.url;

				// Attach handlers for all browsers
				script.onload = script.onreadystatechange = function( _, isAbort ) {

					if ( isAbort || !script.readyState || /loaded|complete/.test( script.readyState ) ) {

						// Handle memory leak in IE
						script.onload = script.onreadystatechange = null;

						// Remove the script
						if ( script.parentNode ) {
							script.parentNode.removeChild( script );
						}

						// Dereference the script
						script = null;

						// Callback if not abort
						if ( !isAbort ) {
							callback( 200, "success" );
						}
					}
				};

				// Circumvent IE6 bugs with base elements (#2709 and #4378) by prepending
				// Use native DOM manipulation to avoid our domManip AJAX trickery
				head.insertBefore( script, head.firstChild );
			},

			abort: function() {
				if ( script ) {
					script.onload( undefined, true );
				}
			}
		};
	}
} );




var oldCallbacks = [],
	rjsonp = /(=)\?(?=&|$)|\?\?/;

// Default jsonp settings
jQuery.ajaxSetup( {
	jsonp: "callback",
	jsonpCallback: function() {
		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
		this[ callback ] = true;
		return callback;
	}
} );

// Detect, normalize options and install callbacks for jsonp requests
jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {

	var callbackName, overwritten, responseContainer,
		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
			"url" :
			typeof s.data === "string" &&
				( s.contentType || "" )
					.indexOf( "application/x-www-form-urlencoded" ) === 0 &&
				rjsonp.test( s.data ) && "data"
		);

	// Handle iff the expected data type is "jsonp" or we have a parameter to set
	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {

		// Get callback name, remembering preexisting value associated with it
		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
			s.jsonpCallback() :
			s.jsonpCallback;

		// Insert callback into url or form data
		if ( jsonProp ) {
			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
		} else if ( s.jsonp !== false ) {
			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
		}

		// Use data converter to retrieve json after script execution
		s.converters[ "script json" ] = function() {
			if ( !responseContainer ) {
				jQuery.error( callbackName + " was not called" );
			}
			return responseContainer[ 0 ];
		};

		// force json dataType
		s.dataTypes[ 0 ] = "json";

		// Install callback
		overwritten = window[ callbackName ];
		window[ callbackName ] = function() {
			responseContainer = arguments;
		};

		// Clean-up function (fires after converters)
		jqXHR.always( function() {

			// If previous value didn't exist - remove it
			if ( overwritten === undefined ) {
				jQuery( window ).removeProp( callbackName );

			// Otherwise restore preexisting value
			} else {
				window[ callbackName ] = overwritten;
			}

			// Save back as free
			if ( s[ callbackName ] ) {

				// make sure that re-using the options doesn't screw things around
				s.jsonpCallback = originalSettings.jsonpCallback;

				// save the callback name for future use
				oldCallbacks.push( callbackName );
			}

			// Call if it was a function and we have a response
			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
				overwritten( responseContainer[ 0 ] );
			}

			responseContainer = overwritten = undefined;
		} );

		// Delegate to script
		return "script";
	}
} );




// data: string of html
// context (optional): If specified, the fragment will be created in this context,
// defaults to document
// keepScripts (optional): If true, will include scripts passed in the html string
jQuery.parseHTML = function( data, context, keepScripts ) {
	if ( !data || typeof data !== "string" ) {
		return null;
	}
	if ( typeof context === "boolean" ) {
		keepScripts = context;
		context = false;
	}
	context = context || document;

	var parsed = rsingleTag.exec( data ),
		scripts = !keepScripts && [];

	// Single tag
	if ( parsed ) {
		return [ context.createElement( parsed[ 1 ] ) ];
	}

	parsed = buildFragment( [ data ], context, scripts );

	if ( scripts && scripts.length ) {
		jQuery( scripts ).remove();
	}

	return jQuery.merge( [], parsed.childNodes );
};


// Keep a copy of the old load method
var _load = jQuery.fn.load;

/**
 * Load a url into a page
 */
jQuery.fn.load = function( url, params, callback ) {
	if ( typeof url !== "string" && _load ) {
		return _load.apply( this, arguments );
	}

	var selector, type, response,
		self = this,
		off = url.indexOf( " " );

	if ( off > -1 ) {
		selector = jQuery.trim( url.slice( off, url.length ) );
		url = url.slice( 0, off );
	}

	// If it's a function
	if ( jQuery.isFunction( params ) ) {

		// We assume that it's the callback
		callback = params;
		params = undefined;

	// Otherwise, build a param string
	} else if ( params && typeof params === "object" ) {
		type = "POST";
	}

	// If we have elements to modify, make the request
	if ( self.length > 0 ) {
		jQuery.ajax( {
			url: url,

			// If "type" variable is undefined, then "GET" method will be used.
			// Make value of this field explicit since
			// user can override it through ajaxSetup method
			type: type || "GET",
			dataType: "html",
			data: params
		} ).done( function( responseText ) {

			// Save response for use in complete callback
			response = arguments;

			self.html( selector ?

				// If a selector was specified, locate the right elements in a dummy div
				// Exclude scripts to avoid IE 'Permission Denied' errors
				jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :

				// Otherwise use the full result
				responseText );

		// If the request succeeds, this function gets "data", "status", "jqXHR"
		// but they are ignored because response was set above.
		// If it fails, this function gets "jqXHR", "status", "error"
		} ).always( callback && function( jqXHR, status ) {
			self.each( function() {
				callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
			} );
		} );
	}

	return this;
};




// Attach a bunch of functions for handling common AJAX events
jQuery.each( [
	"ajaxStart",
	"ajaxStop",
	"ajaxComplete",
	"ajaxError",
	"ajaxSuccess",
	"ajaxSend"
], function( i, type ) {
	jQuery.fn[ type ] = function( fn ) {
		return this.on( type, fn );
	};
} );




jQuery.expr.filters.animated = function( elem ) {
	return jQuery.grep( jQuery.timers, function( fn ) {
		return elem === fn.elem;
	} ).length;
};





/**
 * Gets a window from an element
 */
function getWindow( elem ) {
	return jQuery.isWindow( elem ) ?
		elem :
		elem.nodeType === 9 ?
			elem.defaultView || elem.parentWindow :
			false;
}

jQuery.offset = {
	setOffset: function( elem, options, i ) {
		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
			position = jQuery.css( elem, "position" ),
			curElem = jQuery( elem ),
			props = {};

		// set position first, in-case top/left are set even on static elem
		if ( position === "static" ) {
			elem.style.position = "relative";
		}

		curOffset = curElem.offset();
		curCSSTop = jQuery.css( elem, "top" );
		curCSSLeft = jQuery.css( elem, "left" );
		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
			jQuery.inArray( "auto", [ curCSSTop, curCSSLeft ] ) > -1;

		// need to be able to calculate position if either top or left
		// is auto and position is either absolute or fixed
		if ( calculatePosition ) {
			curPosition = curElem.position();
			curTop = curPosition.top;
			curLeft = curPosition.left;
		} else {
			curTop = parseFloat( curCSSTop ) || 0;
			curLeft = parseFloat( curCSSLeft ) || 0;
		}

		if ( jQuery.isFunction( options ) ) {

			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
		}

		if ( options.top != null ) {
			props.top = ( options.top - curOffset.top ) + curTop;
		}
		if ( options.left != null ) {
			props.left = ( options.left - curOffset.left ) + curLeft;
		}

		if ( "using" in options ) {
			options.using.call( elem, props );
		} else {
			curElem.css( props );
		}
	}
};

jQuery.fn.extend( {
	offset: function( options ) {
		if ( arguments.length ) {
			return options === undefined ?
				this :
				this.each( function( i ) {
					jQuery.offset.setOffset( this, options, i );
				} );
		}

		var docElem, win,
			box = { top: 0, left: 0 },
			elem = this[ 0 ],
			doc = elem && elem.ownerDocument;

		if ( !doc ) {
			return;
		}

		docElem = doc.documentElement;

		// Make sure it's not a disconnected DOM node
		if ( !jQuery.contains( docElem, elem ) ) {
			return box;
		}

		// If we don't have gBCR, just use 0,0 rather than error
		// BlackBerry 5, iOS 3 (original iPhone)
		if ( typeof elem.getBoundingClientRect !== "undefined" ) {
			box = elem.getBoundingClientRect();
		}
		win = getWindow( doc );
		return {
			top: box.top  + ( win.pageYOffset || docElem.scrollTop )  - ( docElem.clientTop  || 0 ),
			left: box.left + ( win.pageXOffset || docElem.scrollLeft ) - ( docElem.clientLeft || 0 )
		};
	},

	position: function() {
		if ( !this[ 0 ] ) {
			return;
		}

		var offsetParent, offset,
			parentOffset = { top: 0, left: 0 },
			elem = this[ 0 ];

		// Fixed elements are offset from window (parentOffset = {top:0, left: 0},
		// because it is its only offset parent
		if ( jQuery.css( elem, "position" ) === "fixed" ) {

			// we assume that getBoundingClientRect is available when computed position is fixed
			offset = elem.getBoundingClientRect();
		} else {

			// Get *real* offsetParent
			offsetParent = this.offsetParent();

			// Get correct offsets
			offset = this.offset();
			if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) {
				parentOffset = offsetParent.offset();
			}

			// Add offsetParent borders
			parentOffset.top  += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
			parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true );
		}

		// Subtract parent offsets and element margins
		// note: when an element has margin: auto the offsetLeft and marginLeft
		// are the same in Safari causing offset.left to incorrectly be 0
		return {
			top:  offset.top  - parentOffset.top - jQuery.css( elem, "marginTop", true ),
			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
		};
	},

	offsetParent: function() {
		return this.map( function() {
			var offsetParent = this.offsetParent;

			while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) &&
				jQuery.css( offsetParent, "position" ) === "static" ) ) {
				offsetParent = offsetParent.offsetParent;
			}
			return offsetParent || documentElement;
		} );
	}
} );

// Create scrollLeft and scrollTop methods
jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
	var top = /Y/.test( prop );

	jQuery.fn[ method ] = function( val ) {
		return access( this, function( elem, method, val ) {
			var win = getWindow( elem );

			if ( val === undefined ) {
				return win ? ( prop in win ) ? win[ prop ] :
					win.document.documentElement[ method ] :
					elem[ method ];
			}

			if ( win ) {
				win.scrollTo(
					!top ? val : jQuery( win ).scrollLeft(),
					top ? val : jQuery( win ).scrollTop()
				);

			} else {
				elem[ method ] = val;
			}
		}, method, val, arguments.length, null );
	};
} );

// Support: Safari<7-8+, Chrome<37-44+
// Add the top/left cssHooks using jQuery.fn.position
// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
// getComputedStyle returns percent when specified for top/left/bottom/right
// rather than make the css module depend on the offset module, we just check for it here
jQuery.each( [ "top", "left" ], function( i, prop ) {
	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
		function( elem, computed ) {
			if ( computed ) {
				computed = curCSS( elem, prop );

				// if curCSS returns percentage, fallback to offset
				return rnumnonpx.test( computed ) ?
					jQuery( elem ).position()[ prop ] + "px" :
					computed;
			}
		}
	);
} );


// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
	function( defaultExtra, funcName ) {

		// margin is only for outerHeight, outerWidth
		jQuery.fn[ funcName ] = function( margin, value ) {
			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );

			return access( this, function( elem, type, value ) {
				var doc;

				if ( jQuery.isWindow( elem ) ) {

					// As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
					// isn't a whole lot we can do. See pull request at this URL for discussion:
					// https://github.com/jquery/jquery/pull/764
					return elem.document.documentElement[ "client" + name ];
				}

				// Get document width or height
				if ( elem.nodeType === 9 ) {
					doc = elem.documentElement;

					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
					// whichever is greatest
					// unfortunately, this causes bug #3838 in IE6/8 only,
					// but there is currently no good, small way to fix it.
					return Math.max(
						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
						elem.body[ "offset" + name ], doc[ "offset" + name ],
						doc[ "client" + name ]
					);
				}

				return value === undefined ?

					// Get width or height on the element, requesting but not forcing parseFloat
					jQuery.css( elem, type, extra ) :

					// Set width or height on the element
					jQuery.style( elem, type, value, extra );
			}, type, chainable ? margin : undefined, chainable, null );
		};
	} );
} );


jQuery.fn.extend( {

	bind: function( types, data, fn ) {
		return this.on( types, null, data, fn );
	},
	unbind: function( types, fn ) {
		return this.off( types, null, fn );
	},

	delegate: function( selector, types, data, fn ) {
		return this.on( types, selector, data, fn );
	},
	undelegate: function( selector, types, fn ) {

		// ( namespace ) or ( selector, types [, fn] )
		return arguments.length === 1 ?
			this.off( selector, "**" ) :
			this.off( types, selector || "**", fn );
	}
} );

// The number of elements contained in the matched element set
jQuery.fn.size = function() {
	return this.length;
};

jQuery.fn.andSelf = jQuery.fn.addBack;




// Register as a named AMD module, since jQuery can be concatenated with other
// files that may use define, but not via a proper concatenation script that
// understands anonymous AMD modules. A named AMD is safest and most robust
// way to register. Lowercase jquery is used because AMD module names are
// derived from file names, and jQuery is normally delivered in a lowercase
// file name. Do this after creating the global so that if an AMD module wants
// to call noConflict to hide this version of jQuery, it will work.

// Note that for maximum portability, libraries that are not jQuery should
// declare themselves as anonymous modules, and avoid setting a global if an
// AMD loader is present. jQuery is a special case. For more information, see
// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon

if ( typeof define === "function" && define.amd ) {
	define( "jquery", [], function() {
		return jQuery;
	} );
}



var

	// Map over jQuery in case of overwrite
	_jQuery = window.jQuery,

	// Map over the $ in case of overwrite
	_$ = window.$;

jQuery.noConflict = function( deep ) {
	if ( window.$ === jQuery ) {
		window.$ = _$;
	}

	if ( deep && window.jQuery === jQuery ) {
		window.jQuery = _jQuery;
	}

	return jQuery;
};

// Expose jQuery and $ identifiers, even in
// AMD (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
// and CommonJS for browser emulators (#13566)
if ( !noGlobal ) {
	window.jQuery = window.$ = jQuery;
}

return jQuery;
}));
(function($, undefined) {

/**
 * Unobtrusive scripting adapter for jQuery
 * https://github.com/rails/jquery-ujs
 *
 * Requires jQuery 1.8.0 or later.
 *
 * Released under the MIT license
 *
 */

  // Cut down on the number of issues from people inadvertently including jquery_ujs twice
  // by detecting and raising an error when it happens.
  'use strict';

  if ( $.rails !== undefined ) {
    $.error('jquery-ujs has already been loaded!');
  }

  // Shorthand to make it a little easier to call public rails functions from within rails.js
  var rails;
  var $document = $(document);

  $.rails = rails = {
    // Link elements bound by jquery-ujs
    linkClickSelector: 'a[data-confirm], a[data-method], a[data-remote]:not([disabled]), a[data-disable-with], a[data-disable]',

    // Button elements bound by jquery-ujs
    buttonClickSelector: 'button[data-remote]:not([form]):not(form button), button[data-confirm]:not([form]):not(form button)',

    // Select elements bound by jquery-ujs
    inputChangeSelector: 'select[data-remote], input[data-remote], textarea[data-remote]',

    // Form elements bound by jquery-ujs
    formSubmitSelector: 'form',

    // Form input elements bound by jquery-ujs
    formInputClickSelector: 'form input[type=submit], form input[type=image], form button[type=submit], form button:not([type]), input[type=submit][form], input[type=image][form], button[type=submit][form], button[form]:not([type])',

    // Form input elements disabled during form submission
    disableSelector: 'input[data-disable-with]:enabled, button[data-disable-with]:enabled, textarea[data-disable-with]:enabled, input[data-disable]:enabled, button[data-disable]:enabled, textarea[data-disable]:enabled',

    // Form input elements re-enabled after form submission
    enableSelector: 'input[data-disable-with]:disabled, button[data-disable-with]:disabled, textarea[data-disable-with]:disabled, input[data-disable]:disabled, button[data-disable]:disabled, textarea[data-disable]:disabled',

    // Form required input elements
    requiredInputSelector: 'input[name][required]:not([disabled]), textarea[name][required]:not([disabled])',

    // Form file input elements
    fileInputSelector: 'input[name][type=file]:not([disabled])',

    // Link onClick disable selector with possible reenable after remote submission
    linkDisableSelector: 'a[data-disable-with], a[data-disable]',

    // Button onClick disable selector with possible reenable after remote submission
    buttonDisableSelector: 'button[data-remote][data-disable-with], button[data-remote][data-disable]',

    // Up-to-date Cross-Site Request Forgery token
    csrfToken: function() {
     return $('meta[name=csrf-token]').attr('content');
    },

    // URL param that must contain the CSRF token
    csrfParam: function() {
     return $('meta[name=csrf-param]').attr('content');
    },

    // Make sure that every Ajax request sends the CSRF token
    CSRFProtection: function(xhr) {
      var token = rails.csrfToken();
      if (token) xhr.setRequestHeader('X-CSRF-Token', token);
    },

    // Make sure that all forms have actual up-to-date tokens (cached forms contain old ones)
    refreshCSRFTokens: function(){
      $('form input[name="' + rails.csrfParam() + '"]').val(rails.csrfToken());
    },

    // Triggers an event on an element and returns false if the event result is false
    fire: function(obj, name, data) {
      var event = $.Event(name);
      obj.trigger(event, data);
      return event.result !== false;
    },

    // Default confirm dialog, may be overridden with custom confirm dialog in $.rails.confirm
    confirm: function(message) {
      return confirm(message);
    },

    // Default ajax function, may be overridden with custom function in $.rails.ajax
    ajax: function(options) {
      return $.ajax(options);
    },

    // Default way to get an element's href. May be overridden at $.rails.href.
    href: function(element) {
      return element[0].href;
    },

    // Checks "data-remote" if true to handle the request through a XHR request.
    isRemote: function(element) {
      return element.data('remote') !== undefined && element.data('remote') !== false;
    },

    // Submits "remote" forms and links with ajax
    handleRemote: function(element) {
      var method, url, data, withCredentials, dataType, options;

      if (rails.fire(element, 'ajax:before')) {
        withCredentials = element.data('with-credentials') || null;
        dataType = element.data('type') || ($.ajaxSettings && $.ajaxSettings.dataType);

        if (element.is('form')) {
          method = element.data('ujs:submit-button-formmethod') || element.attr('method');
          url = element.data('ujs:submit-button-formaction') || element.attr('action');
          data = $(element[0]).serializeArray();
          // memoized value from clicked submit button
          var button = element.data('ujs:submit-button');
          if (button) {
            data.push(button);
            element.data('ujs:submit-button', null);
          }
          element.data('ujs:submit-button-formmethod', null);
          element.data('ujs:submit-button-formaction', null);
        } else if (element.is(rails.inputChangeSelector)) {
          method = element.data('method');
          url = element.data('url');
          data = element.serialize();
          if (element.data('params')) data = data + '&' + element.data('params');
        } else if (element.is(rails.buttonClickSelector)) {
          method = element.data('method') || 'get';
          url = element.data('url');
          data = element.serialize();
          if (element.data('params')) data = data + '&' + element.data('params');
        } else {
          method = element.data('method');
          url = rails.href(element);
          data = element.data('params') || null;
        }

        options = {
          type: method || 'GET', data: data, dataType: dataType,
          // stopping the "ajax:beforeSend" event will cancel the ajax request
          beforeSend: function(xhr, settings) {
            if (settings.dataType === undefined) {
              xhr.setRequestHeader('accept', '*/*;q=0.5, ' + settings.accepts.script);
            }
            if (rails.fire(element, 'ajax:beforeSend', [xhr, settings])) {
              element.trigger('ajax:send', xhr);
            } else {
              return false;
            }
          },
          success: function(data, status, xhr) {
            element.trigger('ajax:success', [data, status, xhr]);
          },
          complete: function(xhr, status) {
            element.trigger('ajax:complete', [xhr, status]);
          },
          error: function(xhr, status, error) {
            element.trigger('ajax:error', [xhr, status, error]);
          },
          crossDomain: rails.isCrossDomain(url)
        };

        // There is no withCredentials for IE6-8 when
        // "Enable native XMLHTTP support" is disabled
        if (withCredentials) {
          options.xhrFields = {
            withCredentials: withCredentials
          };
        }

        // Only pass url to `ajax` options if not blank
        if (url) { options.url = url; }

        return rails.ajax(options);
      } else {
        return false;
      }
    },

    // Determines if the request is a cross domain request.
    isCrossDomain: function(url) {
      var originAnchor = document.createElement('a');
      originAnchor.href = location.href;
      var urlAnchor = document.createElement('a');

      try {
        urlAnchor.href = url;
        // This is a workaround to a IE bug.
        urlAnchor.href = urlAnchor.href;

        // If URL protocol is false or is a string containing a single colon
        // *and* host are false, assume it is not a cross-domain request
        // (should only be the case for IE7 and IE compatibility mode).
        // Otherwise, evaluate protocol and host of the URL against the origin
        // protocol and host.
        return !(((!urlAnchor.protocol || urlAnchor.protocol === ':') && !urlAnchor.host) ||
          (originAnchor.protocol + '//' + originAnchor.host ===
            urlAnchor.protocol + '//' + urlAnchor.host));
      } catch (e) {
        // If there is an error parsing the URL, assume it is crossDomain.
        return true;
      }
    },

    // Handles "data-method" on links such as:
    // <a href="/users/5" data-method="delete" rel="nofollow" data-confirm="Are you sure?">Delete</a>
    handleMethod: function(link) {
      var href = rails.href(link),
        method = link.data('method'),
        target = link.attr('target'),
        csrfToken = rails.csrfToken(),
        csrfParam = rails.csrfParam(),
        form = $('<form method="post" action="' + href + '"></form>'),
        metadataInput = '<input name="_method" value="' + method + '" type="hidden" />';

      if (csrfParam !== undefined && csrfToken !== undefined && !rails.isCrossDomain(href)) {
        metadataInput += '<input name="' + csrfParam + '" value="' + csrfToken + '" type="hidden" />';
      }

      if (target) { form.attr('target', target); }

      form.hide().append(metadataInput).appendTo('body');
      form.submit();
    },

    // Helper function that returns form elements that match the specified CSS selector
    // If form is actually a "form" element this will return associated elements outside the from that have
    // the html form attribute set
    formElements: function(form, selector) {
      return form.is('form') ? $(form[0].elements).filter(selector) : form.find(selector);
    },

    /* Disables form elements:
      - Caches element value in 'ujs:enable-with' data store
      - Replaces element text with value of 'data-disable-with' attribute
      - Sets disabled property to true
    */
    disableFormElements: function(form) {
      rails.formElements(form, rails.disableSelector).each(function() {
        rails.disableFormElement($(this));
      });
    },

    disableFormElement: function(element) {
      var method, replacement;

      method = element.is('button') ? 'html' : 'val';
      replacement = element.data('disable-with');

      if (replacement !== undefined) {
        element.data('ujs:enable-with', element[method]());
        element[method](replacement);
      }

      element.prop('disabled', true);
      element.data('ujs:disabled', true);
    },

    /* Re-enables disabled form elements:
      - Replaces element text with cached value from 'ujs:enable-with' data store (created in `disableFormElements`)
      - Sets disabled property to false
    */
    enableFormElements: function(form) {
      rails.formElements(form, rails.enableSelector).each(function() {
        rails.enableFormElement($(this));
      });
    },

    enableFormElement: function(element) {
      var method = element.is('button') ? 'html' : 'val';
      if (element.data('ujs:enable-with') !== undefined) {
        element[method](element.data('ujs:enable-with'));
        element.removeData('ujs:enable-with'); // clean up cache
      }
      element.prop('disabled', false);
      element.removeData('ujs:disabled');
    },

   /* For 'data-confirm' attribute:
      - Fires `confirm` event
      - Shows the confirmation dialog
      - Fires the `confirm:complete` event

      Returns `true` if no function stops the chain and user chose yes; `false` otherwise.
      Attaching a handler to the element's `confirm` event that returns a `falsy` value cancels the confirmation dialog.
      Attaching a handler to the element's `confirm:complete` event that returns a `falsy` value makes this function
      return false. The `confirm:complete` event is fired whether or not the user answered true or false to the dialog.
   */
    allowAction: function(element) {
      var message = element.data('confirm'),
          answer = false, callback;
      if (!message) { return true; }

      if (rails.fire(element, 'confirm')) {
        try {
          answer = rails.confirm(message);
        } catch (e) {
          (console.error || console.log).call(console, e.stack || e);
        }
        callback = rails.fire(element, 'confirm:complete', [answer]);
      }
      return answer && callback;
    },

    // Helper function which checks for blank inputs in a form that match the specified CSS selector
    blankInputs: function(form, specifiedSelector, nonBlank) {
      var foundInputs = $(),
        input,
        valueToCheck,
        radiosForNameWithNoneSelected,
        radioName,
        selector = specifiedSelector || 'input,textarea',
        requiredInputs = form.find(selector),
        checkedRadioButtonNames = {};

      requiredInputs.each(function() {
        input = $(this);
        if (input.is('input[type=radio]')) {

          // Don't count unchecked required radio as blank if other radio with same name is checked,
          // regardless of whether same-name radio input has required attribute or not. The spec
          // states https://www.w3.org/TR/html5/forms.html#the-required-attribute
          radioName = input.attr('name');

          // Skip if we've already seen the radio with this name.
          if (!checkedRadioButtonNames[radioName]) {

            // If none checked
            if (form.find('input[type=radio]:checked[name="' + radioName + '"]').length === 0) {
              radiosForNameWithNoneSelected = form.find(
                'input[type=radio][name="' + radioName + '"]');
              foundInputs = foundInputs.add(radiosForNameWithNoneSelected);
            }

            // We only need to check each name once.
            checkedRadioButtonNames[radioName] = radioName;
          }
        } else {
          valueToCheck = input.is('input[type=checkbox],input[type=radio]') ? input.is(':checked') : !!input.val();
          if (valueToCheck === nonBlank) {
            foundInputs = foundInputs.add(input);
          }
        }
      });
      return foundInputs.length ? foundInputs : false;
    },

    // Helper function which checks for non-blank inputs in a form that match the specified CSS selector
    nonBlankInputs: function(form, specifiedSelector) {
      return rails.blankInputs(form, specifiedSelector, true); // true specifies nonBlank
    },

    // Helper function, needed to provide consistent behavior in IE
    stopEverything: function(e) {
      $(e.target).trigger('ujs:everythingStopped');
      e.stopImmediatePropagation();
      return false;
    },

    //  Replace element's html with the 'data-disable-with' after storing original html
    //  and prevent clicking on it
    disableElement: function(element) {
      var replacement = element.data('disable-with');

      if (replacement !== undefined) {
        element.data('ujs:enable-with', element.html()); // store enabled state
        element.html(replacement);
      }

      element.bind('click.railsDisable', function(e) { // prevent further clicking
        return rails.stopEverything(e);
      });
      element.data('ujs:disabled', true);
    },

    // Restore element to its original state which was disabled by 'disableElement' above
    enableElement: function(element) {
      if (element.data('ujs:enable-with') !== undefined) {
        element.html(element.data('ujs:enable-with')); // set to old enabled state
        element.removeData('ujs:enable-with'); // clean up cache
      }
      element.unbind('click.railsDisable'); // enable element
      element.removeData('ujs:disabled');
    }
  };

  if (rails.fire($document, 'rails:attachBindings')) {

    $.ajaxPrefilter(function(options, originalOptions, xhr){ if ( !options.crossDomain ) { rails.CSRFProtection(xhr); }});

    // This event works the same as the load event, except that it fires every
    // time the page is loaded.
    //
    // See https://github.com/rails/jquery-ujs/issues/357
    // See https://developer.mozilla.org/en-US/docs/Using_Firefox_1.5_caching
    $(window).on('pageshow.rails', function () {
      $($.rails.enableSelector).each(function () {
        var element = $(this);

        if (element.data('ujs:disabled')) {
          $.rails.enableFormElement(element);
        }
      });

      $($.rails.linkDisableSelector).each(function () {
        var element = $(this);

        if (element.data('ujs:disabled')) {
          $.rails.enableElement(element);
        }
      });
    });

    $document.on('ajax:complete', rails.linkDisableSelector, function() {
        rails.enableElement($(this));
    });

    $document.on('ajax:complete', rails.buttonDisableSelector, function() {
        rails.enableFormElement($(this));
    });

    $document.on('click.rails', rails.linkClickSelector, function(e) {
      var link = $(this), method = link.data('method'), data = link.data('params'), metaClick = e.metaKey || e.ctrlKey;
      if (!rails.allowAction(link)) return rails.stopEverything(e);

      if (!metaClick && link.is(rails.linkDisableSelector)) rails.disableElement(link);

      if (rails.isRemote(link)) {
        if (metaClick && (!method || method === 'GET') && !data) { return true; }

        var handleRemote = rails.handleRemote(link);
        // Response from rails.handleRemote() will either be false or a deferred object promise.
        if (handleRemote === false) {
          rails.enableElement(link);
        } else {
          handleRemote.fail( function() { rails.enableElement(link); } );
        }
        return false;

      } else if (method) {
        rails.handleMethod(link);
        return false;
      }
    });

    $document.on('click.rails', rails.buttonClickSelector, function(e) {
      var button = $(this);

      if (!rails.allowAction(button) || !rails.isRemote(button)) return rails.stopEverything(e);

      if (button.is(rails.buttonDisableSelector)) rails.disableFormElement(button);

      var handleRemote = rails.handleRemote(button);
      // Response from rails.handleRemote() will either be false or a deferred object promise.
      if (handleRemote === false) {
        rails.enableFormElement(button);
      } else {
        handleRemote.fail( function() { rails.enableFormElement(button); } );
      }
      return false;
    });

    $document.on('change.rails', rails.inputChangeSelector, function(e) {
      var link = $(this);
      if (!rails.allowAction(link) || !rails.isRemote(link)) return rails.stopEverything(e);

      rails.handleRemote(link);
      return false;
    });

    $document.on('submit.rails', rails.formSubmitSelector, function(e) {
      var form = $(this),
        remote = rails.isRemote(form),
        blankRequiredInputs,
        nonBlankFileInputs;

      if (!rails.allowAction(form)) return rails.stopEverything(e);

      // Skip other logic when required values are missing or file upload is present
      if (form.attr('novalidate') === undefined) {
        if (form.data('ujs:formnovalidate-button') === undefined) {
          blankRequiredInputs = rails.blankInputs(form, rails.requiredInputSelector, false);
          if (blankRequiredInputs && rails.fire(form, 'ajax:aborted:required', [blankRequiredInputs])) {
            return rails.stopEverything(e);
          }
        } else {
          // Clear the formnovalidate in case the next button click is not on a formnovalidate button
          // Not strictly necessary to do here, since it is also reset on each button click, but just to be certain
          form.data('ujs:formnovalidate-button', undefined);
        }
      }

      if (remote) {
        nonBlankFileInputs = rails.nonBlankInputs(form, rails.fileInputSelector);
        if (nonBlankFileInputs) {
          // Slight timeout so that the submit button gets properly serialized
          // (make it easy for event handler to serialize form without disabled values)
          setTimeout(function(){ rails.disableFormElements(form); }, 13);
          var aborted = rails.fire(form, 'ajax:aborted:file', [nonBlankFileInputs]);

          // Re-enable form elements if event bindings return false (canceling normal form submission)
          if (!aborted) { setTimeout(function(){ rails.enableFormElements(form); }, 13); }

          return aborted;
        }

        rails.handleRemote(form);
        return false;

      } else {
        // Slight timeout so that the submit button gets properly serialized
        setTimeout(function(){ rails.disableFormElements(form); }, 13);
      }
    });

    $document.on('click.rails', rails.formInputClickSelector, function(event) {
      var button = $(this);

      if (!rails.allowAction(button)) return rails.stopEverything(event);

      // Register the pressed submit button
      var name = button.attr('name'),
        data = name ? {name:name, value:button.val()} : null;

      var form = button.closest('form');
      if (form.length === 0) {
        form = $('#' + button.attr('form'));
      }
      form.data('ujs:submit-button', data);

      // Save attributes from button
      form.data('ujs:formnovalidate-button', button.attr('formnovalidate'));
      form.data('ujs:submit-button-formaction', button.attr('formaction'));
      form.data('ujs:submit-button-formmethod', button.attr('formmethod'));
    });

    $document.on('ajax:send.rails', rails.formSubmitSelector, function(event) {
      if (this === event.target) rails.disableFormElements($(this));
    });

    $document.on('ajax:complete.rails', rails.formSubmitSelector, function(event) {
      if (this === event.target) rails.enableFormElements($(this));
    });

    $(function(){
      rails.refreshCSRFTokens();
    });
  }

})( jQuery );
(function() {


}).call(this);
(function() {
  var slice = [].slice;

  this.ActionCable = {
    INTERNAL: {
      "message_types": {
        "welcome": "welcome",
        "ping": "ping",
        "confirmation": "confirm_subscription",
        "rejection": "reject_subscription"
      },
      "default_mount_path": "/cable",
      "protocols": ["actioncable-v1-json", "actioncable-unsupported"]
    },
    createConsumer: function(url) {
      var ref;
      if (url == null) {
        url = (ref = this.getConfig("url")) != null ? ref : this.INTERNAL.default_mount_path;
      }
      return new ActionCable.Consumer(this.createWebSocketURL(url));
    },
    getConfig: function(name) {
      var element;
      element = document.head.querySelector("meta[name='action-cable-" + name + "']");
      return element != null ? element.getAttribute("content") : void 0;
    },
    createWebSocketURL: function(url) {
      var a;
      if (url && !/^wss?:/i.test(url)) {
        a = document.createElement("a");
        a.href = url;
        a.href = a.href;
        a.protocol = a.protocol.replace("http", "ws");
        return a.href;
      } else {
        return url;
      }
    },
    startDebugging: function() {
      return this.debugging = true;
    },
    stopDebugging: function() {
      return this.debugging = null;
    },
    log: function() {
      var messages;
      messages = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      if (this.debugging) {
        messages.push(Date.now());
        return console.log.apply(console, ["[ActionCable]"].concat(slice.call(messages)));
      }
    }
  };

  if (typeof window !== "undefined" && window !== null) {
    window.ActionCable = this.ActionCable;
  }

  if (typeof module !== "undefined" && module !== null) {
    module.exports = this.ActionCable;
  }

}).call(this);
(function() {
  var bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };

  ActionCable.ConnectionMonitor = (function() {
    var clamp, now, secondsSince;

    ConnectionMonitor.pollInterval = {
      min: 3,
      max: 30
    };

    ConnectionMonitor.staleThreshold = 6;

    function ConnectionMonitor(connection) {
      this.connection = connection;
      this.visibilityDidChange = bind(this.visibilityDidChange, this);
      this.reconnectAttempts = 0;
    }

    ConnectionMonitor.prototype.start = function() {
      if (!this.isRunning()) {
        this.startedAt = now();
        delete this.stoppedAt;
        this.startPolling();
        document.addEventListener("visibilitychange", this.visibilityDidChange);
        return ActionCable.log("ConnectionMonitor started. pollInterval = " + (this.getPollInterval()) + " ms");
      }
    };

    ConnectionMonitor.prototype.stop = function() {
      if (this.isRunning()) {
        this.stoppedAt = now();
        this.stopPolling();
        document.removeEventListener("visibilitychange", this.visibilityDidChange);
        return ActionCable.log("ConnectionMonitor stopped");
      }
    };

    ConnectionMonitor.prototype.isRunning = function() {
      return (this.startedAt != null) && (this.stoppedAt == null);
    };

    ConnectionMonitor.prototype.recordPing = function() {
      return this.pingedAt = now();
    };

    ConnectionMonitor.prototype.recordConnect = function() {
      this.reconnectAttempts = 0;
      this.recordPing();
      delete this.disconnectedAt;
      return ActionCable.log("ConnectionMonitor recorded connect");
    };

    ConnectionMonitor.prototype.recordDisconnect = function() {
      this.disconnectedAt = now();
      return ActionCable.log("ConnectionMonitor recorded disconnect");
    };

    ConnectionMonitor.prototype.startPolling = function() {
      this.stopPolling();
      return this.poll();
    };

    ConnectionMonitor.prototype.stopPolling = function() {
      return clearTimeout(this.pollTimeout);
    };

    ConnectionMonitor.prototype.poll = function() {
      return this.pollTimeout = setTimeout((function(_this) {
        return function() {
          _this.reconnectIfStale();
          return _this.poll();
        };
      })(this), this.getPollInterval());
    };

    ConnectionMonitor.prototype.getPollInterval = function() {
      var interval, max, min, ref;
      ref = this.constructor.pollInterval, min = ref.min, max = ref.max;
      interval = 5 * Math.log(this.reconnectAttempts + 1);
      return Math.round(clamp(interval, min, max) * 1000);
    };

    ConnectionMonitor.prototype.reconnectIfStale = function() {
      if (this.connectionIsStale()) {
        ActionCable.log("ConnectionMonitor detected stale connection. reconnectAttempts = " + this.reconnectAttempts + ", pollInterval = " + (this.getPollInterval()) + " ms, time disconnected = " + (secondsSince(this.disconnectedAt)) + " s, stale threshold = " + this.constructor.staleThreshold + " s");
        this.reconnectAttempts++;
        if (this.disconnectedRecently()) {
          return ActionCable.log("ConnectionMonitor skipping reopening recent disconnect");
        } else {
          ActionCable.log("ConnectionMonitor reopening");
          return this.connection.reopen();
        }
      }
    };

    ConnectionMonitor.prototype.connectionIsStale = function() {
      var ref;
      return secondsSince((ref = this.pingedAt) != null ? ref : this.startedAt) > this.constructor.staleThreshold;
    };

    ConnectionMonitor.prototype.disconnectedRecently = function() {
      return this.disconnectedAt && secondsSince(this.disconnectedAt) < this.constructor.staleThreshold;
    };

    ConnectionMonitor.prototype.visibilityDidChange = function() {
      if (document.visibilityState === "visible") {
        return setTimeout((function(_this) {
          return function() {
            if (_this.connectionIsStale() || !_this.connection.isOpen()) {
              ActionCable.log("ConnectionMonitor reopening stale connection on visibilitychange. visbilityState = " + document.visibilityState);
              return _this.connection.reopen();
            }
          };
        })(this), 200);
      }
    };

    now = function() {
      return new Date().getTime();
    };

    secondsSince = function(time) {
      return (now() - time) / 1000;
    };

    clamp = function(number, min, max) {
      return Math.max(min, Math.min(max, number));
    };

    return ConnectionMonitor;

  })();

}).call(this);
(function() {
  var i, message_types, protocols, ref, supportedProtocols, unsupportedProtocol,
    slice = [].slice,
    bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
    indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };

  ref = ActionCable.INTERNAL, message_types = ref.message_types, protocols = ref.protocols;

  supportedProtocols = 2 <= protocols.length ? slice.call(protocols, 0, i = protocols.length - 1) : (i = 0, []), unsupportedProtocol = protocols[i++];

  ActionCable.Connection = (function() {
    Connection.reopenDelay = 500;

    function Connection(consumer) {
      this.consumer = consumer;
      this.open = bind(this.open, this);
      this.subscriptions = this.consumer.subscriptions;
      this.monitor = new ActionCable.ConnectionMonitor(this);
      this.disconnected = true;
    }

    Connection.prototype.send = function(data) {
      if (this.isOpen()) {
        this.webSocket.send(JSON.stringify(data));
        return true;
      } else {
        return false;
      }
    };

    Connection.prototype.open = function() {
      if (this.isActive()) {
        ActionCable.log("Attempted to open WebSocket, but existing socket is " + (this.getState()));
        throw new Error("Existing connection must be closed before opening");
      } else {
        ActionCable.log("Opening WebSocket, current state is " + (this.getState()) + ", subprotocols: " + protocols);
        if (this.webSocket != null) {
          this.uninstallEventHandlers();
        }
        this.webSocket = new WebSocket(this.consumer.url, protocols);
        this.installEventHandlers();
        this.monitor.start();
        return true;
      }
    };

    Connection.prototype.close = function(arg) {
      var allowReconnect, ref1;
      allowReconnect = (arg != null ? arg : {
        allowReconnect: true
      }).allowReconnect;
      if (!allowReconnect) {
        this.monitor.stop();
      }
      if (this.isActive()) {
        return (ref1 = this.webSocket) != null ? ref1.close() : void 0;
      }
    };

    Connection.prototype.reopen = function() {
      var error, error1;
      ActionCable.log("Reopening WebSocket, current state is " + (this.getState()));
      if (this.isActive()) {
        try {
          return this.close();
        } catch (error1) {
          error = error1;
          return ActionCable.log("Failed to reopen WebSocket", error);
        } finally {
          ActionCable.log("Reopening WebSocket in " + this.constructor.reopenDelay + "ms");
          setTimeout(this.open, this.constructor.reopenDelay);
        }
      } else {
        return this.open();
      }
    };

    Connection.prototype.getProtocol = function() {
      var ref1;
      return (ref1 = this.webSocket) != null ? ref1.protocol : void 0;
    };

    Connection.prototype.isOpen = function() {
      return this.isState("open");
    };

    Connection.prototype.isActive = function() {
      return this.isState("open", "connecting");
    };

    Connection.prototype.isProtocolSupported = function() {
      var ref1;
      return ref1 = this.getProtocol(), indexOf.call(supportedProtocols, ref1) >= 0;
    };

    Connection.prototype.isState = function() {
      var ref1, states;
      states = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      return ref1 = this.getState(), indexOf.call(states, ref1) >= 0;
    };

    Connection.prototype.getState = function() {
      var ref1, state, value;
      for (state in WebSocket) {
        value = WebSocket[state];
        if (value === ((ref1 = this.webSocket) != null ? ref1.readyState : void 0)) {
          return state.toLowerCase();
        }
      }
      return null;
    };

    Connection.prototype.installEventHandlers = function() {
      var eventName, handler;
      for (eventName in this.events) {
        handler = this.events[eventName].bind(this);
        this.webSocket["on" + eventName] = handler;
      }
    };

    Connection.prototype.uninstallEventHandlers = function() {
      var eventName;
      for (eventName in this.events) {
        this.webSocket["on" + eventName] = function() {};
      }
    };

    Connection.prototype.events = {
      message: function(event) {
        var identifier, message, ref1, type;
        if (!this.isProtocolSupported()) {
          return;
        }
        ref1 = JSON.parse(event.data), identifier = ref1.identifier, message = ref1.message, type = ref1.type;
        switch (type) {
          case message_types.welcome:
            this.monitor.recordConnect();
            return this.subscriptions.reload();
          case message_types.ping:
            return this.monitor.recordPing();
          case message_types.confirmation:
            return this.subscriptions.notify(identifier, "connected");
          case message_types.rejection:
            return this.subscriptions.reject(identifier);
          default:
            return this.subscriptions.notify(identifier, "received", message);
        }
      },
      open: function() {
        ActionCable.log("WebSocket onopen event, using '" + (this.getProtocol()) + "' subprotocol");
        this.disconnected = false;
        if (!this.isProtocolSupported()) {
          ActionCable.log("Protocol is unsupported. Stopping monitor and disconnecting.");
          return this.close({
            allowReconnect: false
          });
        }
      },
      close: function(event) {
        ActionCable.log("WebSocket onclose event");
        if (this.disconnected) {
          return;
        }
        this.disconnected = true;
        this.monitor.recordDisconnect();
        return this.subscriptions.notifyAll("disconnected", {
          willAttemptReconnect: this.monitor.isRunning()
        });
      },
      error: function() {
        return ActionCable.log("WebSocket onerror event");
      }
    };

    return Connection;

  })();

}).call(this);
(function() {
  var slice = [].slice;

  ActionCable.Subscriptions = (function() {
    function Subscriptions(consumer) {
      this.consumer = consumer;
      this.subscriptions = [];
    }

    Subscriptions.prototype.create = function(channelName, mixin) {
      var channel, params, subscription;
      channel = channelName;
      params = typeof channel === "object" ? channel : {
        channel: channel
      };
      subscription = new ActionCable.Subscription(this.consumer, params, mixin);
      return this.add(subscription);
    };

    Subscriptions.prototype.add = function(subscription) {
      this.subscriptions.push(subscription);
      this.consumer.ensureActiveConnection();
      this.notify(subscription, "initialized");
      this.sendCommand(subscription, "subscribe");
      return subscription;
    };

    Subscriptions.prototype.remove = function(subscription) {
      this.forget(subscription);
      if (!this.findAll(subscription.identifier).length) {
        this.sendCommand(subscription, "unsubscribe");
      }
      return subscription;
    };

    Subscriptions.prototype.reject = function(identifier) {
      var i, len, ref, results, subscription;
      ref = this.findAll(identifier);
      results = [];
      for (i = 0, len = ref.length; i < len; i++) {
        subscription = ref[i];
        this.forget(subscription);
        this.notify(subscription, "rejected");
        results.push(subscription);
      }
      return results;
    };

    Subscriptions.prototype.forget = function(subscription) {
      var s;
      this.subscriptions = (function() {
        var i, len, ref, results;
        ref = this.subscriptions;
        results = [];
        for (i = 0, len = ref.length; i < len; i++) {
          s = ref[i];
          if (s !== subscription) {
            results.push(s);
          }
        }
        return results;
      }).call(this);
      return subscription;
    };

    Subscriptions.prototype.findAll = function(identifier) {
      var i, len, ref, results, s;
      ref = this.subscriptions;
      results = [];
      for (i = 0, len = ref.length; i < len; i++) {
        s = ref[i];
        if (s.identifier === identifier) {
          results.push(s);
        }
      }
      return results;
    };

    Subscriptions.prototype.reload = function() {
      var i, len, ref, results, subscription;
      ref = this.subscriptions;
      results = [];
      for (i = 0, len = ref.length; i < len; i++) {
        subscription = ref[i];
        results.push(this.sendCommand(subscription, "subscribe"));
      }
      return results;
    };

    Subscriptions.prototype.notifyAll = function() {
      var args, callbackName, i, len, ref, results, subscription;
      callbackName = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      ref = this.subscriptions;
      results = [];
      for (i = 0, len = ref.length; i < len; i++) {
        subscription = ref[i];
        results.push(this.notify.apply(this, [subscription, callbackName].concat(slice.call(args))));
      }
      return results;
    };

    Subscriptions.prototype.notify = function() {
      var args, callbackName, i, len, results, subscription, subscriptions;
      subscription = arguments[0], callbackName = arguments[1], args = 3 <= arguments.length ? slice.call(arguments, 2) : [];
      if (typeof subscription === "string") {
        subscriptions = this.findAll(subscription);
      } else {
        subscriptions = [subscription];
      }
      results = [];
      for (i = 0, len = subscriptions.length; i < len; i++) {
        subscription = subscriptions[i];
        results.push(typeof subscription[callbackName] === "function" ? subscription[callbackName].apply(subscription, args) : void 0);
      }
      return results;
    };

    Subscriptions.prototype.sendCommand = function(subscription, command) {
      var identifier;
      identifier = subscription.identifier;
      return this.consumer.send({
        command: command,
        identifier: identifier
      });
    };

    return Subscriptions;

  })();

}).call(this);
(function() {
  ActionCable.Subscription = (function() {
    var extend;

    function Subscription(consumer, params, mixin) {
      this.consumer = consumer;
      if (params == null) {
        params = {};
      }
      this.identifier = JSON.stringify(params);
      extend(this, mixin);
    }

    Subscription.prototype.perform = function(action, data) {
      if (data == null) {
        data = {};
      }
      data.action = action;
      return this.send(data);
    };

    Subscription.prototype.send = function(data) {
      return this.consumer.send({
        command: "message",
        identifier: this.identifier,
        data: JSON.stringify(data)
      });
    };

    Subscription.prototype.unsubscribe = function() {
      return this.consumer.subscriptions.remove(this);
    };

    extend = function(object, properties) {
      var key, value;
      if (properties != null) {
        for (key in properties) {
          value = properties[key];
          object[key] = value;
        }
      }
      return object;
    };

    return Subscription;

  })();

}).call(this);
(function() {
  ActionCable.Consumer = (function() {
    function Consumer(url) {
      this.url = url;
      this.subscriptions = new ActionCable.Subscriptions(this);
      this.connection = new ActionCable.Connection(this);
    }

    Consumer.prototype.send = function(data) {
      return this.connection.send(data);
    };

    Consumer.prototype.connect = function() {
      return this.connection.open();
    };

    Consumer.prototype.disconnect = function() {
      return this.connection.close({
        allowReconnect: false
      });
    };

    Consumer.prototype.ensureActiveConnection = function() {
      if (!this.connection.isActive()) {
        return this.connection.open();
      }
    };

    return Consumer;

  })();

}).call(this);
// Action Cable provides the framework to deal with WebSockets in Rails.
// You can generate new channels where WebSocket features live using the rails generate channel command.
//




(function() {
  this.App || (this.App = {});

  App.cable = ActionCable.createConsumer();

}).call(this);

(function() {


}).call(this);

/**
@module up
 */

(function() {
  window.up = {
    version: "0.28.1"
  };

}).call(this);

/**
Utility functions
=================
  
Unpoly comes with a number of utility functions
that might save you from loading something like [Underscore.js](http://underscorejs.org/).

@class up.util
 */

(function() {
  var slice = [].slice,
    bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };

  up.util = (function($) {

    /**
    A function that does nothing.
    
    @function up.util.noop
    @experimental
     */
    var $createElementFromSelector, $createPlaceholder, ANIMATION_DEFERRED_KEY, DivertibleChain, ESCAPE_HTML_ENTITY_MAP, all, any, appendRequestData, cache, castedAttr, clientSize, compact, config, contains, copy, copyAttributes, createElement, createElementFromHtml, cssAnimate, detect, documentHasVerticalScrollbar, each, escapeHtml, escapePressed, except, extend, extractOptions, fail, findWithSelf, finishCssAnimate, fixedToAbsolute, forceCompositing, forceRepaint, identity, intersect, isArray, isBlank, isDeferred, isDefined, isDetached, isElement, isFixed, isFormData, isFunction, isGiven, isHash, isJQuery, isMissing, isNull, isNumber, isObject, isPresent, isPromise, isStandardPort, isString, isUndefined, isUnmodifiedKeyEvent, isUnmodifiedMouseEvent, last, locationFromXhr, map, measure, memoize, merge, methodFromXhr, multiSelector, nextFrame, nonUpClasses, noop, normalizeMethod, normalizeUrl, nullJQuery, offsetParent, once, only, opacity, option, options, parseUrl, pluckData, pluckKey, presence, presentAttr, previewable, reject, remove, requestDataAsArray, requestDataAsQuery, requestDataFromForm, resolvableWhen, resolvedDeferred, resolvedPromise, scrollbarWidth, select, selectorForElement, setMissingAttrs, setTimer, submittedValue, temporaryCss, times, titleFromXhr, toArray, trim, unJQuery, uniq, unresolvableDeferred, unresolvablePromise, unwrapElement, whenReady;
    noop = $.noop;

    /**
    @function up.util.memoize
    @internal
     */
    memoize = function(func) {
      var cache, cached;
      cache = void 0;
      cached = false;
      return function() {
        var args;
        args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
        if (cached) {
          return cache;
        } else {
          cached = true;
          return cache = func.apply(null, args);
        }
      };
    };

    /**
    Returns if the given port is the default port for the given protocol.
    
    @function up.util.isStandardPort
    @internal
     */
    isStandardPort = function(protocol, port) {
      port = port.toString();
      return ((port === "" || port === "80") && protocol === 'http:') || (port === "443" && protocol === 'https:');
    };

    /**
    Normalizes relative paths and absolute paths to a full URL
    that can be checked for equality with other normalized URLs.
    
    By default hashes are ignored, search queries are included.
    
    @function up.util.normalizeUrl
    @param {Boolean} [options.hash=false]
      Whether to include an `#hash` anchor in the normalized URL
    @param {Boolean} [options.search=true]
      Whether to include a `?query` string in the normalized URL
    @param {Boolean} [options.stripTrailingSlash=true]
      Whether to strip a trailing slash from the pathname
    @internal
     */
    normalizeUrl = function(urlOrAnchor, options) {
      var anchor, normalized, pathname;
      anchor = parseUrl(urlOrAnchor);
      normalized = anchor.protocol + "//" + anchor.hostname;
      if (!isStandardPort(anchor.protocol, anchor.port)) {
        normalized += ":" + anchor.port;
      }
      pathname = anchor.pathname;
      if (pathname[0] !== '/') {
        pathname = "/" + pathname;
      }
      if ((options != null ? options.stripTrailingSlash : void 0) !== false) {
        pathname = pathname.replace(/\/$/, '');
      }
      normalized += pathname;
      if ((options != null ? options.hash : void 0) === true) {
        normalized += anchor.hash;
      }
      if ((options != null ? options.search : void 0) !== false) {
        normalized += anchor.search;
      }
      return normalized;
    };

    /**
    Parses the given URL into components such as hostname and path.
    
    If the given URL is not fully qualified, it is assumed to be relative
    to the current page.
    
    @function up.util.parseUrl
    @return {Object}
      The parsed URL as an object with
      `protocol`, `hostname`, `port`, `pathname`, `search` and `hash`
      properties.
    @experimental
     */
    parseUrl = function(urlOrAnchor) {
      var anchor;
      anchor = null;
      if (isString(urlOrAnchor)) {
        anchor = $('<a>').attr({
          href: urlOrAnchor
        }).get(0);
        if (isBlank(anchor.hostname)) {
          anchor.href = anchor.href;
        }
      } else {
        anchor = unJQuery(urlOrAnchor);
      }
      return anchor;
    };

    /**
    @function up.util.normalizeMethod
    @internal
     */
    normalizeMethod = function(method) {
      if (method) {
        return method.toUpperCase();
      } else {
        return 'GET';
      }
    };

    /**
    @function $createElementFromSelector
    @internal
     */
    $createElementFromSelector = function(selector) {
      var $element, $parent, $root, classes, conjunction, depthSelector, expression, html, i, id, iteration, j, len, len1, path, tag;
      path = selector.split(/[ >]/);
      $root = null;
      for (iteration = i = 0, len = path.length; i < len; iteration = ++i) {
        depthSelector = path[iteration];
        conjunction = depthSelector.match(/(^|\.|\#)[A-Za-z0-9\-_]+/g);
        tag = "div";
        classes = [];
        id = null;
        for (j = 0, len1 = conjunction.length; j < len1; j++) {
          expression = conjunction[j];
          switch (expression[0]) {
            case ".":
              classes.push(expression.substr(1));
              break;
            case "#":
              id = expression.substr(1);
              break;
            default:
              tag = expression;
          }
        }
        html = "<" + tag;
        if (classes.length) {
          html += " class=\"" + classes.join(" ") + "\"";
        }
        if (id) {
          html += " id=\"" + id + "\"";
        }
        html += ">";
        $element = $(html);
        if ($parent) {
          $element.appendTo($parent);
        }
        if (iteration === 0) {
          $root = $element;
        }
        $parent = $element;
      }
      return $root;
    };
    createElement = function(tagName, html) {
      var element;
      element = document.createElement(tagName);
      if (isPresent(html)) {
        element.innerHTML = html;
      }
      return element;
    };

    /**
    @function $create
     */
    $createPlaceholder = function(selector, container) {
      var $placeholder;
      if (container == null) {
        container = document.body;
      }
      $placeholder = $createElementFromSelector(selector);
      $placeholder.addClass('up-placeholder');
      $placeholder.appendTo(container);
      return $placeholder;
    };

    /**
    Returns a CSS selector that matches the given element as good as possible.
    
    This uses, in decreasing order of priority:
    
    - The element's `up-id` attribute
    - The element's ID
    - The element's name
    - The element's classes
    - The element's tag names
    
    @function up.util.selectorForElement
    @param {String|Element|jQuery}
      The element for which to create a selector.
    @experimental
     */
    selectorForElement = function(element) {
      var $element, classes, i, id, klass, len, name, selector, upId;
      $element = $(element);
      selector = void 0;
      up.puts("Creating selector from element %o", $element.get(0));
      if (upId = presence($element.attr("up-id"))) {
        selector = "[up-id='" + upId + "']";
      } else if (id = presence($element.attr("id"))) {
        selector = "#" + id;
      } else if (name = presence($element.attr("name"))) {
        selector = "[name='" + name + "']";
      } else if (classes = presence(nonUpClasses($element))) {
        selector = '';
        for (i = 0, len = classes.length; i < len; i++) {
          klass = classes[i];
          selector += "." + klass;
        }
      } else {
        selector = $element.prop('tagName').toLowerCase();
      }
      return selector;
    };
    nonUpClasses = function($element) {
      var classString, classes;
      classString = $element.attr('class') || '';
      classes = classString.split(' ');
      return select(classes, function(klass) {
        return isPresent(klass) && !klass.match(/^up-/);
      });
    };
    createElementFromHtml = function(html) {
      var anything, bodyElement, bodyMatch, bodyPattern, capture, closeTag, headElement, htmlElement, openTag, titleElement, titleMatch, titlePattern;
      openTag = function(tag) {
        return "<" + tag + "(?: [^>]*)?>";
      };
      closeTag = function(tag) {
        return "</" + tag + ">";
      };
      anything = '(?:.|\\s)*?';
      capture = function(pattern) {
        return "(" + pattern + ")";
      };
      titlePattern = new RegExp(openTag('title') + capture(anything) + closeTag('title'), 'i');
      bodyPattern = new RegExp(openTag('body') + capture(anything) + closeTag('body'), 'i');
      if (bodyMatch = html.match(bodyPattern)) {
        htmlElement = document.createElement('html');
        bodyElement = createElement('body', bodyMatch[1]);
        htmlElement.appendChild(bodyElement);
        if (titleMatch = html.match(titlePattern)) {
          headElement = createElement('head');
          htmlElement.appendChild(headElement);
          titleElement = createElement('title', titleMatch[1]);
          headElement.appendChild(titleElement);
        }
        return htmlElement;
      } else {
        return createElement('div', html);
      }
    };

    /**
    Merge the contents of two or more objects together into the first object.
    
    @function up.util.extend
    @param {Object} target
    @param {Array<Object>} sources...
    @stable
     */
    extend = $.extend;

    /**
    Returns a new string with whitespace removed from the beginning
    and end of the given string.
    
    @param {String}
      A string that might have whitespace at the beginning and end.
    @return {String}
      The trimmed string.
    @stable
     */
    trim = $.trim;

    /**
    Calls the given function for each element (and, optional, index)
    of the given array.
    
    @function up.util.each
    @param {Array} array
    @param {Function<Object, Number>} block
      A function that will be called with each element and (optional) iteration index.
    @stable
     */
    each = function(array, block) {
      var i, index, item, len, results;
      results = [];
      for (index = i = 0, len = array.length; i < len; index = ++i) {
        item = array[index];
        results.push(block(item, index));
      }
      return results;
    };

    /**
    Translate all items in an array to new array of items.
    
    @function up.util.map
    @param {Array} array
    @param {Function<Object, Number>} block
      A function that will be called with each element and (optional) iteration index.
    @return {Array}
      A new array containing the result of each function call.
    @stable
     */
    map = each;

    /**
    Calls the given function for the given number of times.
    
    @function up.util.times
    @param {Number} count
    @param {Function} block
    @stable
     */
    times = function(count, block) {
      var i, iteration, ref, results;
      results = [];
      for (iteration = i = 0, ref = count - 1; 0 <= ref ? i <= ref : i >= ref; iteration = 0 <= ref ? ++i : --i) {
        results.push(block(iteration));
      }
      return results;
    };

    /**
    Returns whether the given argument is `null`.
    
    @function up.util.isNull
    @param object
    @return {Boolean}
    @stable
     */
    isNull = function(object) {
      return object === null;
    };

    /**
    Returns whether the given argument is `undefined`.
    
    @function up.util.isUndefined
    @param object
    @return {Boolean}
    @stable
     */
    isUndefined = function(object) {
      return object === void(0);
    };

    /**
    Returns whether the given argument is not `undefined`.
    
    @function up.util.isDefined
    @param object
    @return {Boolean}
    @stable
     */
    isDefined = function(object) {
      return !isUndefined(object);
    };

    /**
    Returns whether the given argument is either `undefined` or `null`.
    
    Note that empty strings or zero are *not* considered to be "missing".
    
    For the opposite of `up.util.isMissing` see [`up.util.isGiven`](/up.util.isGiven).
    
    @function up.util.isMissing
    @param object
    @return {Boolean}
    @stable
     */
    isMissing = function(object) {
      return isUndefined(object) || isNull(object);
    };

    /**
    Returns whether the given argument is neither `undefined` nor `null`.
    
    Note that empty strings or zero *are* considered to be "given".
    
    For the opposite of `up.util.isGiven` see [`up.util.isMissing`](/up.util.isMissing).
    
    @function up.util.isGiven
    @param object
    @return {Boolean}
    @stable
     */
    isGiven = function(object) {
      return !isMissing(object);
    };

    /**
    Return whether the given argument is considered to be blank.
    
    This returns `true` for:
    
    - `undefined`
    - `null`
    - Empty strings
    - Empty arrays
    - An object without own enumerable properties
    
    All other arguments return `false`.
    
    @function up.util.isBlank
    @param object
    @return {Boolean}
    @stable
     */
    isBlank = function(object) {
      return isMissing(object) || (isObject(object) && Object.keys(object).length === 0) || (object.length === 0);
    };

    /**
    Returns the given argument if the argument is [present](/up.util.isPresent),
    otherwise returns `undefined`.
    
    @function up.util.presence
    @param object
    @param {Function<T>} [tester=up.util.isPresent]
      The function that will be used to test whether the argument is present.
    @return {T|Undefined}
    @stable
     */
    presence = function(object, tester) {
      if (tester == null) {
        tester = isPresent;
      }
      if (tester(object)) {
        return object;
      } else {
        return void 0;
      }
    };

    /**
    Returns whether the given argument is not [blank](/up.util.isBlank).
    
    @function up.util.isPresent
    @param object
    @return {Boolean}
    @stable
     */
    isPresent = function(object) {
      return !isBlank(object);
    };

    /**
    Returns whether the given argument is a function.
    
    @function up.util.isFunction
    @param object
    @return {Boolean}
    @stable
     */
    isFunction = function(object) {
      return typeof object === 'function';
    };

    /**
    Returns whether the given argument is a string.
    
    @function up.util.isString
    @param object
    @return {Boolean}
    @stable
     */
    isString = function(object) {
      return typeof object === 'string';
    };

    /**
    Returns whether the given argument is a number.
    
    Note that this will check the argument's *type*.
    It will return `false` for a string like `"123"`.
    
    @function up.util.isNumber
    @param object
    @return {Boolean}
    @stable
     */
    isNumber = function(object) {
      return typeof object === 'number';
    };

    /**
    Returns whether the given argument is an object, but not a function.
    
    @function up.util.isHash
    @param object
    @return {Boolean}
    @stable
     */
    isHash = function(object) {
      return typeof object === 'object' && !!object;
    };

    /**
    Returns whether the given argument is an object.
    
    This also returns `true` for functions, which may behave like objects in Javascript.
    For an alternative that returns `false` for functions, see [`up.util.isHash`](/up.util.isHash).
    
    @function up.util.isObject
    @param object
    @return {Boolean}
    @stable
     */
    isObject = function(object) {
      return isHash(object) || (typeof object === 'function');
    };

    /**
    Returns whether the given argument is a DOM element.
    
    @function up.util.isElement
    @param object
    @return {Boolean}
    @stable
     */
    isElement = function(object) {
      return !!(object && object.nodeType === 1);
    };

    /**
    Returns whether the given argument is a jQuery collection.
    
    @function up.util.isJQuery
    @param object
    @return {Boolean}
    @stable
     */
    isJQuery = function(object) {
      return object instanceof jQuery;
    };

    /**
    Returns whether the given argument is an object with a `then` method.
    
    @function up.util.isPromise
    @param object
    @return {Boolean}
    @stable
     */
    isPromise = function(object) {
      return isObject(object) && isFunction(object.then);
    };

    /**
    Returns whether the given argument is an object with `then` and `resolve` methods.
    
    @function up.util.isDeferred
    @param object
    @return {Boolean}
    @stable
     */
    isDeferred = function(object) {
      return isPromise(object) && isFunction(object.resolve);
    };

    /**
    Returns whether the given argument is an array.
    
    @function up.util.isArray
    @param object
    @return {Boolean}
    @stable
     */
    isArray = Array.isArray || function(object) {
      return Object.prototype.toString.call(object) === '[object Array]';
    };

    /**
    Returns whether the given argument is a `FormData` instance.
    
    Always returns `false` in browsers that don't support `FormData`.
    
    @function up.util.isFormData
    @param object
    @return {Boolean}
    @internal
     */
    isFormData = function(object) {
      return up.browser.canFormData() && object instanceof FormData;
    };

    /**
    Converts the given array-like argument into an array.
    
    Returns the array.
    
    @function up.util.toArray
    @param object
    @return {Array}
    @stable
     */
    toArray = function(object) {
      return Array.prototype.slice.call(object);
    };

    /**
    Shallow-copies the given array or object into a new array or object.
    
    Returns the new array or object.
    
    @function up.util.copy
    @param {Object|Array} object
    @return {Object|Array}
    @stable
     */
    copy = function(object) {
      if (isArray(object)) {
        return object.slice();
      } else if (isHash(object)) {
        return extend({}, object);
      }
    };

    /**
    If given a jQuery collection, returns the underlying array of DOM element.
    If given any other argument, returns the argument unchanged.
    
    @function up.util.unJQuery
    @param object
    @internal
     */
    unJQuery = function(object) {
      if (isJQuery(object)) {
        return object.get(0);
      } else {
        return object;
      }
    };

    /**
    Creates a new object by merging together the properties from the given objects.
    
    @function up.util.merge
    @param {Array<Object>} sources...
    @return Object
    @stable
     */
    merge = function() {
      var sources;
      sources = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      return extend.apply(null, [{}].concat(slice.call(sources)));
    };

    /**
    Creates an options hash from the given argument and some defaults.
    
    The semantics of this function are confusing.
    We want to get rid of this in the future.
    
    @function up.util.options
    @param {Object} object
    @param {Object} [defaults]
    @return {Object}
    @internal
     */
    options = function(object, defaults) {
      var defaultValue, key, merged, value;
      merged = object ? copy(object) : {};
      if (defaults) {
        for (key in defaults) {
          defaultValue = defaults[key];
          value = merged[key];
          if (!isGiven(value)) {
            merged[key] = defaultValue;
          } else if (isObject(defaultValue) && isObject(value)) {
            merged[key] = options(value, defaultValue);
          }
        }
      }
      return merged;
    };

    /**
    Returns the first argument that is considered [given](/up.util.isGiven).
    
    This function is useful when you have multiple option sources and the value can be boolean.
    In that case you cannot change the sources with a `||` operator
    (since that doesn't short-circuit at `false`).
    
    @function up.util.option
    @param {Array} args...
    @internal
     */
    option = function() {
      var args;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      return detect(args, isGiven);
    };

    /**
    Passes each element in the given array to the given function.
    Returns the first element for which the function returns a truthy value.
    
    If no object matches, returns `undefined`.
    
    @function up.util.detect
    @param {Array<T>} array
    @param {Function<T>} tester
    @return {T|Undefined}
    @stable
     */
    detect = function(array, tester) {
      var element, i, len, match;
      match = void 0;
      for (i = 0, len = array.length; i < len; i++) {
        element = array[i];
        if (tester(element)) {
          match = element;
          break;
        }
      }
      return match;
    };

    /**
    Returns whether the given function returns a truthy value
    for any element in the given array.
    
    @function up.util.any
    @param {Array<T>} array
    @param {Function<T>} tester
    @return {Boolean}
    @experimental
     */
    any = function(array, tester) {
      var element, i, len, match;
      match = false;
      for (i = 0, len = array.length; i < len; i++) {
        element = array[i];
        if (tester(element)) {
          match = true;
          break;
        }
      }
      return match;
    };

    /**
    Returns whether the given function returns a truthy value
    for all elements in the given array.
    
    @function up.util.all
    @param {Array<T>} array
    @param {Function<T>} tester
    @return {Boolean}
    @experimental
     */
    all = function(array, tester) {
      var element, i, len, match;
      match = true;
      for (i = 0, len = array.length; i < len; i++) {
        element = array[i];
        if (!tester(element)) {
          match = false;
          break;
        }
      }
      return match;
    };

    /**
    Returns all elements from the given array that are
    neither `null` or `undefined`.
    
    @function up.util.compact
    @param {Array<T>} array
    @return {Array<T>}
    @stable
     */
    compact = function(array) {
      return select(array, isGiven);
    };

    /**
    Returns the given array without duplicates.
    
    @function up.util.uniq
    @param {Array<T>} array
    @return {Array<T>}
    @stable
     */
    uniq = function(array) {
      var seen;
      seen = {};
      return select(array, function(element) {
        if (seen.hasOwnProperty(element)) {
          return false;
        } else {
          return seen[element] = true;
        }
      });
    };

    /**
    Returns all elements from the given array that return
    a truthy value when passed to the given function.
    
    @function up.util.select
    @param {Array<T>} array
    @return {Array<T>}
    @stable
     */
    select = function(array, tester) {
      var matches;
      matches = [];
      each(array, function(element) {
        if (tester(element)) {
          return matches.push(element);
        }
      });
      return matches;
    };

    /**
    Returns all elements from the given array that do not return
    a truthy value when passed to the given function.
    
    @function up.util.reject
    @param {Array<T>} array
    @return {Array<T>}
    @stable
     */
    reject = function(array, tester) {
      return select(array, function(element) {
        return !tester(element);
      });
    };

    /**
    Returns the intersection of the given two arrays.
    
    Implementation is not optimized. Don't use it for large arrays.
    
    @function up.util.intersect
    @internal
     */
    intersect = function(array1, array2) {
      return select(array1, function(element) {
        return contains(array2, element);
      });
    };

    /**
    Returns the first [present](/up.util.isPresent) element attribute
    among the given list of attribute names.
    
    @function up.util.presentAttr
    @internal
     */
    presentAttr = function() {
      var $element, attrName, attrNames, values;
      $element = arguments[0], attrNames = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      values = (function() {
        var i, len, results;
        results = [];
        for (i = 0, len = attrNames.length; i < len; i++) {
          attrName = attrNames[i];
          results.push($element.attr(attrName));
        }
        return results;
      })();
      return detect(values, isPresent);
    };

    /**
    Waits for the given number of milliseconds, the nruns the given callback.
    
    If the number of milliseconds is zero, the callback is run in the current execution frame.
    See [`up.util.nextFrame`] for running a function in the next executation frame.
    
    @function up.util.setTimer
    @param {Number} millis
    @param {Function} callback
    @experimental
     */
    setTimer = function(millis, callback) {
      if (millis > 0) {
        return setTimeout(callback, millis);
      } else {
        return callback();
      }
    };

    /**
    Schedules the given function to be called in the
    next Javascript execution frame.
    
    @function up.util.nextFrame
    @param {Function} block
    @stable
     */
    nextFrame = function(block) {
      return setTimeout(block, 0);
    };

    /**
    Returns the last element of the given array.
    
    @function up.util.last
    @param {Array<T>} array
    @return {T}
     */
    last = function(array) {
      return array[array.length - 1];
    };

    /**
    Measures the drawable area of the document.
    
    @function up.util.clientSize
    @internal
     */
    clientSize = function() {
      var element;
      element = document.documentElement;
      return {
        width: element.clientWidth,
        height: element.clientHeight
      };
    };

    /**
    Returns the width of a scrollbar.
    
    This only runs once per page load.
    
    @function up.util.scrollbarWidth
    @internal
     */
    scrollbarWidth = memoize(function() {
      var $outer, outer, width;
      $outer = $('<div>');
      $outer.attr('up-viewport', '');
      $outer.css({
        position: 'absolute',
        top: '0',
        left: '0',
        width: '50px',
        height: '50px',
        overflowY: 'scroll'
      });
      $outer.appendTo(document.body);
      outer = $outer.get(0);
      width = outer.offsetWidth - outer.clientWidth;
      $outer.remove();
      return width;
    });

    /**
    Returns whether the given element is currently showing a vertical scrollbar.
    
    @function up.util.documentHasVerticalScrollbar
    @internal
     */
    documentHasVerticalScrollbar = function() {
      var $body, body, bodyOverflow, forcedHidden, forcedScroll, html;
      body = document.body;
      $body = $(body);
      html = document.documentElement;
      bodyOverflow = $body.css('overflow-y');
      forcedScroll = bodyOverflow === 'scroll';
      forcedHidden = bodyOverflow === 'hidden';
      return forcedScroll || (!forcedHidden && html.scrollHeight > html.clientHeight);
    };

    /**
    Modifies the given function so it only runs once.
    Subsequent calls will return the previous return value.
    
    @function up.util.once
    @param {Function} fun
    @experimental
     */
    once = function(fun) {
      var result;
      result = void 0;
      return function() {
        var args;
        args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
        if (fun != null) {
          result = fun.apply(null, args);
        }
        fun = void 0;
        return result;
      };
    };

    /**
    Temporarily sets the CSS for the given element.
    
    @function up.util.temporaryCss
    @param {jQuery} $element
    @param {Object} css
    @param {Function} [block]
      If given, the CSS is set, the block is called and
      the old CSS is restored.
    @return {Function}
      A function that restores the original CSS when called.
    @internal
     */
    temporaryCss = function(elementOrSelector, css, block) {
      var $element, memo, oldCss;
      $element = $(elementOrSelector);
      oldCss = $element.css(Object.keys(css));
      $element.css(css);
      memo = function() {
        return $element.css(oldCss);
      };
      if (block) {
        block();
        return memo();
      } else {
        return once(memo);
      }
    };

    /**
    Forces the given jQuery element into an accelerated compositing layer.
    
    @function up.util.forceCompositing
    @internal
     */
    forceCompositing = function($element) {
      var memo, oldTransforms;
      oldTransforms = $element.css(['transform', '-webkit-transform']);
      if (isBlank(oldTransforms) || oldTransforms['transform'] === 'none') {
        memo = function() {
          return $element.css(oldTransforms);
        };
        $element.css({
          'transform': 'translateZ(0)',
          '-webkit-transform': 'translateZ(0)'
        });
      } else {
        memo = function() {};
      }
      return memo;
    };

    /**
    Forces a repaint of the given element.
    
    @function up.util.forceRepaint
    @internal
     */
    forceRepaint = function(element) {
      element = unJQuery(element);
      return element.offsetHeight;
    };

    /**
    Animates the given element's CSS properties using CSS transitions.
    
    If the element is already being animated, the previous animation
    will instantly jump to its last frame before the new animation begins. 
    
    To improve performance, the element will be forced into compositing for
    the duration of the animation.
    
    @function up.util.cssAnimate
    @param {Element|jQuery|String} elementOrSelector
      The element to animate.
    @param {Object} lastFrame
      The CSS properties that should be transitioned to.
    @param {Number} [options.duration=300]
      The duration of the animation, in milliseconds.
    @param {Number} [options.delay=0]
      The delay before the animation starts, in milliseconds.
    @param {String} [options.easing='ease']
      The timing function that controls the animation's acceleration.
      See [W3C documentation](http://www.w3.org/TR/css3-transitions/#transition-timing-function)
      for a list of pre-defined timing functions.
    @return {Deferred}
      A promise for the animation's end.
    @internal
     */
    cssAnimate = function(elementOrSelector, lastFrame, opts) {
      var $element, deferred, oldTransition, onTransitionEnd, transition, transitionFinished, transitionProperties, withoutCompositing;
      $element = $(elementOrSelector);
      opts = options(opts, {
        duration: 300,
        delay: 0,
        easing: 'ease'
      });
      if (opts.duration === 0) {
        $element.css(lastFrame);
        return resolvedDeferred();
      }
      deferred = $.Deferred();
      transitionProperties = Object.keys(lastFrame);
      transition = {
        'transition-property': transitionProperties.join(', '),
        'transition-duration': opts.duration + "ms",
        'transition-delay': opts.delay + "ms",
        'transition-timing-function': opts.easing
      };
      oldTransition = $element.css(Object.keys(transition));
      $element.addClass('up-animating');
      transitionFinished = function() {
        $element.removeClass('up-animating');
        return $element.off('transitionend', onTransitionEnd);
      };
      onTransitionEnd = function(event) {
        var completedProperty;
        completedProperty = event.originalEvent.propertyName;
        if (contains(transitionProperties, completedProperty)) {
          deferred.resolve();
          return transitionFinished();
        }
      };
      $element.on('transitionend', onTransitionEnd);
      deferred.then(transitionFinished);
      withoutCompositing = forceCompositing($element);
      $element.css(transition);
      $element.css(lastFrame);
      $element.data(ANIMATION_DEFERRED_KEY, deferred);
      deferred.then(function() {
        var hadTransitionBefore;
        $element.removeData(ANIMATION_DEFERRED_KEY);
        withoutCompositing();
        $element.css({
          'transition': 'none'
        });
        hadTransitionBefore = !(oldTransition['transition-property'] === 'none' || (oldTransition['transition-property'] === 'all' && oldTransition['transition-duration'][0] === '0'));
        if (hadTransitionBefore) {
          forceRepaint($element);
          return $element.css(oldTransition);
        }
      });
      return deferred;
    };
    ANIMATION_DEFERRED_KEY = 'up-animation-deferred';

    /**
    Completes the animation for  the given element by jumping
    to the last frame instantly. All callbacks chained to
    the original animation's promise will be called.
    
    Does nothing if the given element is not currently animating.
    
    Also see [`up.motion.finish`](/up.motion.finish).
    
    @function up.util.finishCssAnimate
    @param {Element|jQuery|String} elementOrSelector
    @internal
     */
    finishCssAnimate = function(elementOrSelector) {
      return $(elementOrSelector).each(function() {
        var existingAnimation;
        if (existingAnimation = pluckData(this, ANIMATION_DEFERRED_KEY)) {
          return existingAnimation.resolve();
        }
      });
    };

    /**
    Measures the given element.
    
    @function up.util.measure
    @internal
     */
    measure = function($element, opts) {
      var $context, box, contextCoords, coordinates, elementCoords;
      opts = options(opts, {
        relative: false,
        inner: false
      });
      if (opts.relative) {
        if (opts.relative === true) {
          coordinates = $element.position();
        } else {
          $context = $(opts.relative);
          elementCoords = $element.offset();
          if ($context.is(document)) {
            coordinates = elementCoords;
          } else {
            contextCoords = $context.offset();
            coordinates = {
              left: elementCoords.left - contextCoords.left,
              top: elementCoords.top - contextCoords.top
            };
          }
        }
      } else {
        coordinates = $element.offset();
      }
      box = {
        left: coordinates.left,
        top: coordinates.top
      };
      if (opts.inner) {
        box.width = $element.width();
        box.height = $element.height();
      } else {
        box.width = $element.outerWidth();
        box.height = $element.outerHeight();
      }
      return box;
    };

    /**
    Copies all attributes from the source element to the target element.
    
    @function up.util.copyAttributes
    @internal
     */
    copyAttributes = function($source, $target) {
      var attr, i, len, ref, results;
      ref = $source.get(0).attributes;
      results = [];
      for (i = 0, len = ref.length; i < len; i++) {
        attr = ref[i];
        if (attr.specified) {
          results.push($target.attr(attr.name, attr.value));
        } else {
          results.push(void 0);
        }
      }
      return results;
    };

    /**
    Looks for the given selector in the element and its descendants.
    
    @function up.util.findWithSelf
    @internal
     */
    findWithSelf = function($element, selector) {
      return $element.find(selector).addBack(selector);
    };

    /**
    Returns whether the given keyboard event involved the ESC key.
    
    @function up.util.escapePressed
    @internal
     */
    escapePressed = function(event) {
      return event.keyCode === 27;
    };

    /**
    Returns whether the given array or string contains the given element or substring.
    
    @function up.util.contains
    @param {Array|String} arrayOrString
    @param elementOrSubstring
    @stable
     */
    contains = function(arrayOrString, elementOrSubstring) {
      return arrayOrString.indexOf(elementOrSubstring) >= 0;
    };

    /**
    @function up.util.castedAttr
    @internal
     */
    castedAttr = function($element, attrName) {
      var value;
      value = $element.attr(attrName);
      switch (value) {
        case 'false':
          return false;
        case 'true':
          return true;
        case '':
          return true;
        default:
          return value;
      }
    };

    /**
    @function up.util.locationFromXhr
    @internal
     */
    locationFromXhr = function(xhr) {
      return xhr.getResponseHeader('X-Up-Location');
    };

    /**
    @function up.util.titleFromXhr
    @internal
     */
    titleFromXhr = function(xhr) {
      return xhr.getResponseHeader('X-Up-Title');
    };

    /**
    @function up.util.methodFromXhr
    @internal
     */
    methodFromXhr = function(xhr) {
      return xhr.getResponseHeader('X-Up-Method');
    };

    /**
    Returns a copy of the given object that only contains
    the given properties.
    
    @function up.util.only
    @param {Object} object
    @param {Array} keys...
    @stable
     */
    only = function() {
      var filtered, i, len, object, properties, property;
      object = arguments[0], properties = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      filtered = {};
      for (i = 0, len = properties.length; i < len; i++) {
        property = properties[i];
        if (object.hasOwnProperty(property)) {
          filtered[property] = object[property];
        }
      }
      return filtered;
    };

    /**
    Returns a copy of the given object that contains all except
    the given properties.
    
    @function up.util.except
    @param {Object} object
    @param {Array} keys...
    @stable
     */
    except = function() {
      var filtered, i, len, object, properties, property;
      object = arguments[0], properties = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      filtered = copy(object);
      for (i = 0, len = properties.length; i < len; i++) {
        property = properties[i];
        delete filtered[property];
      }
      return filtered;
    };

    /**
    @function up.util.isUnmodifiedKeyEvent
    @internal
     */
    isUnmodifiedKeyEvent = function(event) {
      return !(event.metaKey || event.shiftKey || event.ctrlKey);
    };

    /**
    @function up.util.isUnmodifiedMouseEvent
    @internal
     */
    isUnmodifiedMouseEvent = function(event) {
      var isLeftButton;
      isLeftButton = isUndefined(event.button) || event.button === 0;
      return isLeftButton && isUnmodifiedKeyEvent(event);
    };

    /**
    Returns a [Deferred object](https://api.jquery.com/category/deferred-object/) that is
    already resolved.
    
    @function up.util.resolvedDeferred
    @return {Deferred}
    @stable
     */
    resolvedDeferred = function() {
      var deferred;
      deferred = $.Deferred();
      deferred.resolve();
      return deferred;
    };

    /**
    Returns a promise that is already resolved.
    
    @function up.util.resolvedPromise
    @return {Promise}
    @stable
     */
    resolvedPromise = function() {
      return resolvedDeferred().promise();
    };

    /**
    Returns a [Deferred object](https://api.jquery.com/category/deferred-object/) that will never be resolved.
    
    @function up.util.unresolvableDeferred
    @return {Deferred}
    @experimental
     */
    unresolvableDeferred = function() {
      return $.Deferred();
    };

    /**
    Returns a promise that will never be resolved.
    
    @function up.util.unresolvablePromise
    @experimental
     */
    unresolvablePromise = function() {
      return unresolvableDeferred().promise();
    };

    /**
    Returns an empty jQuery collection.
    
    @function up.util.nullJQuery
    @internal
     */
    nullJQuery = function() {
      return $();
    };

    /**
    Returns a new promise that resolves once all promises in arguments resolve.
    
    Other then [`$.when` from jQuery](https://api.jquery.com/jquery.when/),
    the combined promise will have a `resolve` method. This `resolve` method
    will resolve all the wrapped promises.
    
    @function up.util.resolvableWhen
    @internal
     */
    resolvableWhen = function() {
      var deferreds, joined;
      deferreds = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      joined = $.when.apply($, [resolvedDeferred()].concat(slice.call(deferreds)));
      joined.resolve = memoize(function() {
        return each(deferreds, function(deferred) {
          return deferred.resolve();
        });
      });
      return joined;
    };

    /**
    On the given element, set attributes that are still missing.
    
    @function up.util.setMissingAttrs
    @internal
     */
    setMissingAttrs = function($element, attrs) {
      var key, results, value;
      results = [];
      for (key in attrs) {
        value = attrs[key];
        if (isMissing($element.attr(key))) {
          results.push($element.attr(key, value));
        } else {
          results.push(void 0);
        }
      }
      return results;
    };

    /**
    Removes the given element from the given array.
    
    This changes the given array.
    
    @function up.util.remove
    @param {Array<T>} array
    @param {T} element
    @stable
     */
    remove = function(array, element) {
      var index;
      index = array.indexOf(element);
      if (index >= 0) {
        array.splice(index, 1);
        return element;
      }
    };

    /**
    @function up.util.multiSelector
    @internal
     */
    multiSelector = function(parts) {
      var combinedSelector, elements, i, len, obj, part, selectors;
      obj = {};
      selectors = [];
      elements = [];
      for (i = 0, len = parts.length; i < len; i++) {
        part = parts[i];
        if (isString(part)) {
          selectors.push(part);
        } else {
          elements.push(part);
        }
      }
      obj.parsed = elements;
      if (selectors.length) {
        combinedSelector = selectors.join(', ');
        obj.parsed.push(combinedSelector);
      }
      obj.select = function() {
        return obj.find(void 0);
      };
      obj.find = function($root) {
        var $matches, $result, j, len1, ref, selector;
        $result = nullJQuery();
        ref = obj.parsed;
        for (j = 0, len1 = ref.length; j < len1; j++) {
          selector = ref[j];
          $matches = $root ? $root.find(selector) : $(selector);
          $result = $result.add($matches);
        }
        return $result;
      };
      obj.findWithSelf = function($start) {
        var $matches;
        $matches = obj.find($start);
        if (obj.doesMatch($start)) {
          $matches = $matches.add($start);
        }
        return $matches;
      };
      obj.doesMatch = function(element) {
        var $element;
        $element = $(element);
        return any(obj.parsed, function(selector) {
          return $element.is(selector);
        });
      };
      obj.seekUp = function(start) {
        var $element, $result, $start;
        $start = $(start);
        $element = $start;
        $result = void 0;
        while ($element.length) {
          if (obj.doesMatch($element)) {
            $result = $element;
            break;
          }
          $element = $element.parent();
        }
        return $result || nullJQuery();
      };
      return obj;
    };

    /**
    @function up.util.cache
    @param {Number|Function} [config.size]
      Maximum number of cache entries.
      Set to `undefined` to not limit the cache size.
    @param {Number|Function} [config.expiry]
      The number of milliseconds after which a cache entry
      will be discarded.
    @param {String} [config.log]
      A prefix for log entries printed by this cache object.
    @param {Function<Object>} [config.key]
      A function that takes an argument and returns a `String` key
      for storage. If omitted, `toString()` is called on the argument.
    @internal
     */
    cache = function(config) {
      var alias, clear, expiryMillis, get, isEnabled, isFresh, keys, log, makeRoomForAnotherKey, maxKeys, normalizeStoreKey, optionEvaluator, set, store, timestamp;
      if (config == null) {
        config = {};
      }
      store = void 0;
      optionEvaluator = function(name) {
        return function() {
          var value;
          value = config[name];
          if (isNumber(value)) {
            return value;
          } else if (isFunction(value)) {
            return value();
          } else {
            return void 0;
          }
        };
      };
      maxKeys = optionEvaluator('size');
      expiryMillis = optionEvaluator('expiry');
      normalizeStoreKey = function(key) {
        if (config.key) {
          return config.key(key);
        } else {
          return key.toString();
        }
      };
      isEnabled = function() {
        return maxKeys() !== 0 && expiryMillis() !== 0;
      };
      clear = function() {
        return store = {};
      };
      clear();
      log = function() {
        var args;
        args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
        if (config.logPrefix) {
          args[0] = "[" + config.logPrefix + "] " + args[0];
          return up.puts.apply(up, args);
        }
      };
      keys = function() {
        return Object.keys(store);
      };
      makeRoomForAnotherKey = function() {
        var max, oldestKey, oldestTimestamp, storeKeys;
        storeKeys = copy(keys());
        max = maxKeys();
        if (max && storeKeys.length >= max) {
          oldestKey = null;
          oldestTimestamp = null;
          each(storeKeys, function(key) {
            var promise, timestamp;
            promise = store[key];
            timestamp = promise.timestamp;
            if (!oldestTimestamp || oldestTimestamp > timestamp) {
              oldestKey = key;
              return oldestTimestamp = timestamp;
            }
          });
          if (oldestKey) {
            return delete store[oldestKey];
          }
        }
      };
      alias = function(oldKey, newKey) {
        var value;
        value = get(oldKey, {
          silent: true
        });
        if (isDefined(value)) {
          return set(newKey, value);
        }
      };
      timestamp = function() {
        return (new Date()).valueOf();
      };
      set = function(key, value) {
        var storeKey;
        if (isEnabled()) {
          makeRoomForAnotherKey();
          storeKey = normalizeStoreKey(key);
          return store[storeKey] = {
            timestamp: timestamp(),
            value: value
          };
        }
      };
      remove = function(key) {
        var storeKey;
        storeKey = normalizeStoreKey(key);
        return delete store[storeKey];
      };
      isFresh = function(entry) {
        var millis, timeSinceTouch;
        millis = expiryMillis();
        if (millis) {
          timeSinceTouch = timestamp() - entry.timestamp;
          return timeSinceTouch < millis;
        } else {
          return true;
        }
      };
      get = function(key, options) {
        var entry, storeKey;
        if (options == null) {
          options = {};
        }
        storeKey = normalizeStoreKey(key);
        if (entry = store[storeKey]) {
          if (isFresh(entry)) {
            if (!options.silent) {
              log("Cache hit for '%s'", key);
            }
            return entry.value;
          } else {
            if (!options.silent) {
              log("Discarding stale cache entry for '%s'", key);
            }
            remove(key);
            return void 0;
          }
        } else {
          if (!options.silent) {
            log("Cache miss for '%s'", key);
          }
          return void 0;
        }
      };
      return {
        alias: alias,
        get: get,
        set: set,
        remove: remove,
        clear: clear,
        keys: keys
      };
    };

    /**
    @function up.util.config
    @internal
     */
    config = function(blueprint) {
      var hash;
      if (blueprint == null) {
        blueprint = {};
      }
      hash = {};
      hash.reset = function() {
        var newOptions;
        newOptions = blueprint;
        if (isFunction(newOptions)) {
          newOptions = newOptions();
        }
        return extend(hash, newOptions);
      };
      hash.reset();
      Object.preventExtensions(hash);
      return hash;
    };

    /**
    @function up.util.unwrapElement
    @internal
     */
    unwrapElement = function(wrapper) {
      var parent, wrappedNodes;
      wrapper = unJQuery(wrapper);
      parent = wrapper.parentNode;
      wrappedNodes = toArray(wrapper.childNodes);
      each(wrappedNodes, function(wrappedNode) {
        return parent.insertBefore(wrappedNode, wrapper);
      });
      return parent.removeChild(wrapper);
    };

    /**
    @function up.util.offsetParent
    @internal
     */
    offsetParent = function($element) {
      var $match, position;
      $match = void 0;
      while (($element = $element.parent()) && $element.length) {
        position = $element.css('position');
        if (position === 'absolute' || position === 'relative' || $element.is('body')) {
          $match = $element;
          break;
        }
      }
      return $match;
    };

    /**
    Returns if the given element has a `fixed` position.
    
    @function up.util.isFixed
    @internal
     */
    isFixed = function(element) {
      var $element, position;
      $element = $(element);
      while (true) {
        position = $element.css('position');
        if (position === 'fixed') {
          return true;
        } else {
          $element = $element.parent();
          if ($element.length === 0 || $element.is(document)) {
            return false;
          }
        }
      }
    };

    /**
    @function up.util.fixedToAbsolute
    @internal
     */
    fixedToAbsolute = function(element, $viewport) {
      var $element, $futureOffsetParent, elementCoords, futureParentCoords;
      $element = $(element);
      $futureOffsetParent = offsetParent($element);
      elementCoords = $element.position();
      futureParentCoords = $futureOffsetParent.offset();
      return $element.css({
        position: 'absolute',
        left: elementCoords.left - futureParentCoords.left,
        top: elementCoords.top - futureParentCoords.top + $viewport.scrollTop(),
        right: '',
        bottom: ''
      });
    };

    /**
    Normalizes the given params object to the form returned by
    [`jQuery.serializeArray`](https://api.jquery.com/serializeArray/).
    
    @function up.util.requestDataAsArray
    @param {Object|Array|Undefined|Null} data
    @internal
     */
    requestDataAsArray = function(data) {
      var array, i, len, pair, part, query, ref;
      if (isFormData(data)) {
        return up.fail('Cannot convert FormData into an array');
      } else {
        query = requestDataAsQuery(data);
        array = [];
        ref = query.split('&');
        for (i = 0, len = ref.length; i < len; i++) {
          part = ref[i];
          if (isPresent(part)) {
            pair = part.split('=');
            array.push({
              name: decodeURIComponent(pair[0]),
              value: decodeURIComponent(pair[1])
            });
          }
        }
        return array;
      }
    };

    /**
    Returns an URL-encoded query string for the given params object.
    
    @function up.util.requestDataAsQuery
    @param {Object|Array|Undefined|Null} data
    @internal
     */
    requestDataAsQuery = function(data) {
      var query;
      if (isFormData(data)) {
        return up.fail('Cannot convert FormData into a query string');
      } else if (isPresent(data)) {
        query = $.param(data);
        query = query.replace(/\+/g, '%20');
        return query;
      } else {
        return "";
      }
    };

    /**
    Serializes the given form into a request data representation.
    
    @function up.util.requestDataFromForm
    @return {Array|FormData}
    @internal
     */
    requestDataFromForm = function(form) {
      var $form, hasFileInputs;
      $form = $(form);
      hasFileInputs = $form.find('input[type=file]').length;
      if (hasFileInputs && up.browser.canFormData()) {
        return new FormData($form.get(0));
      } else {
        return $form.serializeArray();
      }
    };

    /**
    Adds a key/value pair to the given request data representation.
    
    This mutates the given `data` if `data` is a `FormData`, an object
    or an array. When `data` is `String` a new string with the appended key/value
    pair is returned.
    
    @function up.util.appendRequestData
    @param {FormData|Object|Array|Undefined|Null} data
    @param {String} key
    @param {String|Blob|File} value
    @internal
     */
    appendRequestData = function(data, name, value) {
      var newPair;
      if (isFormData(data)) {
        data.append(name, value);
      } else if (isArray(data)) {
        data.push({
          name: name,
          value: value
        });
      } else if (isObject(data)) {
        data[name] = value;
      } else if (isString(data) || isMissing(data)) {
        newPair = requestDataAsQuery([
          {
            name: name,
            value: value
          }
        ]);
        if (isPresent(data)) {
          data = [data, newPair].join('&');
        } else {
          data = newPair;
        }
      }
      return data;
    };

    /**
    Throws an [exception](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error)
    with the given message.
    
    The message will also be printed to the [error log](/up.log.error).
    
    Also a notification will be shown at the bottom of the screen.
    
    \#\#\#\# Examples
    
        up.fail('Division by zero')
        up.fail('Unexpected result %o', result)
    
    @function up.fail
    @experimental
     */
    fail = function() {
      var args, asString, messageArgs, ref, ref1, toastOptions;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      if (isArray(args[0])) {
        messageArgs = args[0];
        toastOptions = args[1] || {};
      } else {
        messageArgs = args;
        toastOptions = {};
      }
      (ref = up.log).error.apply(ref, messageArgs);
      whenReady().then(function() {
        return up.toast.open(messageArgs, toastOptions);
      });
      asString = (ref1 = up.browser).sprintf.apply(ref1, messageArgs);
      throw new Error(asString);
    };
    ESCAPE_HTML_ENTITY_MAP = {
      "&": "&amp;",
      "<": "&lt;",
      ">": "&gt;",
      '"': '&quot;'
    };

    /**
    Escapes the given string of HTML by replacing control chars with their HTML entities.
    
    @function up.util.escapeHtml
    @param {String} string
      The text that should be escaped
    @experimental
     */
    escapeHtml = function(string) {
      return string.replace(/[&<>"]/g, function(char) {
        return ESCAPE_HTML_ENTITY_MAP[char];
      });
    };
    pluckKey = function(object, key) {
      var value;
      value = object[key];
      delete object[key];
      return value;
    };
    pluckData = function(elementOrSelector, key) {
      var $element, value;
      $element = $(elementOrSelector);
      value = $element.data(key);
      $element.removeData(key);
      return value;
    };
    extractOptions = function(args) {
      var lastArg;
      lastArg = last(args);
      if (isHash(lastArg) && !isJQuery(lastArg)) {
        return args.pop();
      } else {
        return {};
      }
    };
    opacity = function(element) {
      var rawOpacity;
      rawOpacity = $(element).css('opacity');
      if (isGiven(rawOpacity)) {
        return parseFloat(rawOpacity);
      } else {
        return void 0;
      }
    };
    whenReady = memoize(function() {
      var deferred;
      if ($.isReady) {
        return resolvedPromise();
      } else {
        deferred = $.Deferred();
        $(function() {
          return deferred.resolve();
        });
        return deferred.promise();
      }
    });
    identity = function(arg) {
      return arg;
    };

    /**
    Returns whether the given element has been detached from the DOM
    (or whether it was never attached).
    
    @function up.util.isDetached
    @internal
     */
    isDetached = function(element) {
      element = unJQuery(element);
      return !jQuery.contains(document.documentElement, element);
    };

    /**
    Given a function that will return a promise, returns a proxy function
    with an additional `.promise` attribute.
    
    When the proxy is called, the inner function is called.
    The proxy's `.promise` attribute is available even before the function is called
    and will resolve when the inner function's returned promise resolves.
    
    @function up.util.previewable
    @internal
     */
    previewable = function(fun) {
      var deferred, preview;
      deferred = $.Deferred();
      preview = function() {
        var args;
        args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
        return fun.apply(null, args).then(function() {
          return deferred.resolve();
        });
      };
      preview.promise = deferred.promise();
      return preview;
    };

    /**
    A linear task queue whose (2..n)th tasks can be changed at any time.
    
    @function up.util.DivertibleChain
    @internal
     */
    DivertibleChain = (function() {
      function DivertibleChain() {
        this.asap = bind(this.asap, this);
        this.poke = bind(this.poke, this);
        this.allTasks = bind(this.allTasks, this);
        this.promise = bind(this.promise, this);
        this.reset = bind(this.reset, this);
        this.reset();
      }

      DivertibleChain.prototype.reset = function() {
        this.queue = [];
        return this.currentTask = void 0;
      };

      DivertibleChain.prototype.promise = function() {
        var promises;
        promises = map(this.allTasks(), function(task) {
          return task.promise;
        });
        return $.when.apply($, promises);
      };

      DivertibleChain.prototype.allTasks = function() {
        var tasks;
        tasks = [];
        if (this.currentTask) {
          tasks.push(this.currentTask);
        }
        tasks = tasks.concat(this.queue);
        return tasks;
      };

      DivertibleChain.prototype.poke = function() {
        var promise;
        if (!this.currentTask) {
          if (this.currentTask = this.queue.shift()) {
            promise = this.currentTask();
            return promise.always((function(_this) {
              return function() {
                _this.currentTask = void 0;
                return _this.poke();
              };
            })(this));
          }
        }
      };

      DivertibleChain.prototype.asap = function() {
        var newTasks;
        newTasks = 1 <= arguments.length ? slice.call(arguments, 0) : [];
        this.queue = map(newTasks, previewable);
        return this.poke();
      };

      return DivertibleChain;

    })();

    /**
    @function up.util.submittedValue
    @internal
     */
    submittedValue = function(fieldOrSelector) {
      var $field;
      $field = $(fieldOrSelector);
      if ($field.is('[type=checkbox], [type=radio]') && !$field.is(':checked')) {
        return void 0;
      } else {
        return $field.val();
      }
    };
    return {

      /**
      @function up.util.sequence
      @internal
       */
      sequence: function() {
        var functions;
        functions = 1 <= arguments.length ? slice.call(arguments, 0) : [];
        return function() {
          return map(functions, function(f) {
            return f();
          });
        };
      },
      isDetached: isDetached,
      requestDataAsArray: requestDataAsArray,
      requestDataAsQuery: requestDataAsQuery,
      appendRequestData: appendRequestData,
      requestDataFromForm: requestDataFromForm,
      offsetParent: offsetParent,
      fixedToAbsolute: fixedToAbsolute,
      isFixed: isFixed,
      presentAttr: presentAttr,
      createElement: createElement,
      parseUrl: parseUrl,
      normalizeUrl: normalizeUrl,
      normalizeMethod: normalizeMethod,
      createElementFromHtml: createElementFromHtml,
      $createElementFromSelector: $createElementFromSelector,
      $createPlaceholder: $createPlaceholder,
      selectorForElement: selectorForElement,
      extend: extend,
      copy: copy,
      merge: merge,
      options: options,
      option: option,
      fail: fail,
      each: each,
      map: map,
      times: times,
      any: any,
      all: all,
      detect: detect,
      select: select,
      reject: reject,
      intersect: intersect,
      compact: compact,
      uniq: uniq,
      last: last,
      isNull: isNull,
      isDefined: isDefined,
      isUndefined: isUndefined,
      isGiven: isGiven,
      isMissing: isMissing,
      isPresent: isPresent,
      isBlank: isBlank,
      presence: presence,
      isObject: isObject,
      isFunction: isFunction,
      isString: isString,
      isNumber: isNumber,
      isElement: isElement,
      isJQuery: isJQuery,
      isPromise: isPromise,
      isDeferred: isDeferred,
      isHash: isHash,
      isArray: isArray,
      isFormData: isFormData,
      isUnmodifiedKeyEvent: isUnmodifiedKeyEvent,
      isUnmodifiedMouseEvent: isUnmodifiedMouseEvent,
      nullJQuery: nullJQuery,
      unJQuery: unJQuery,
      setTimer: setTimer,
      nextFrame: nextFrame,
      measure: measure,
      temporaryCss: temporaryCss,
      cssAnimate: cssAnimate,
      finishCssAnimate: finishCssAnimate,
      forceCompositing: forceCompositing,
      forceRepaint: forceRepaint,
      escapePressed: escapePressed,
      copyAttributes: copyAttributes,
      findWithSelf: findWithSelf,
      contains: contains,
      toArray: toArray,
      castedAttr: castedAttr,
      locationFromXhr: locationFromXhr,
      titleFromXhr: titleFromXhr,
      methodFromXhr: methodFromXhr,
      clientSize: clientSize,
      only: only,
      except: except,
      trim: trim,
      unresolvableDeferred: unresolvableDeferred,
      unresolvablePromise: unresolvablePromise,
      resolvedPromise: resolvedPromise,
      resolvedDeferred: resolvedDeferred,
      resolvableWhen: resolvableWhen,
      setMissingAttrs: setMissingAttrs,
      remove: remove,
      memoize: memoize,
      scrollbarWidth: scrollbarWidth,
      documentHasVerticalScrollbar: documentHasVerticalScrollbar,
      config: config,
      cache: cache,
      unwrapElement: unwrapElement,
      multiSelector: multiSelector,
      error: fail,
      pluckData: pluckData,
      pluckKey: pluckKey,
      extractOptions: extractOptions,
      isDetached: isDetached,
      noop: noop,
      opacity: opacity,
      whenReady: whenReady,
      identity: identity,
      escapeHtml: escapeHtml,
      DivertibleChain: DivertibleChain,
      submittedValue: submittedValue
    };
  })($);

  up.fail = up.util.fail;

}).call(this);

/**
Browser interface
=================

Some browser-interfacing methods and switches that
we can't currently get rid off.

@class up.browser
 */

(function() {
  var slice = [].slice;

  up.browser = (function($) {
    var CONSOLE_PLACEHOLDERS, canCssTransition, canFormData, canInputEvent, canLogSubstitution, canPushState, initialRequestMethod, installPolyfills, isIE8OrWorse, isIE9OrWorse, isRecentJQuery, isSupported, loadPage, popCookie, puts, sessionStorage, setLocationHref, sprintf, sprintfWithFormattedArgs, stringifyArg, submitForm, u, url, whenConfirmed;
    u = up.util;

    /**
    @method up.browser.loadPage
    @param {String} url
    @param {String} [options.method='get']
    @param {Object|Array} [options.data]
    @internal
     */
    loadPage = function(url, options) {
      var $form, addField, csrfField, method, query;
      if (options == null) {
        options = {};
      }
      method = u.option(options.method, 'get').toLowerCase();
      if (method === 'get') {
        query = u.requestDataAsQuery(options.data);
        if (query) {
          url = url + "?" + query;
        }
        return setLocationHref(url);
      } else {
        $form = $("<form method='post' action='" + url + "' class='up-page-loader'></form>");
        addField = function(field) {
          var $field;
          $field = $('<input type="hidden">');
          $field.attr(field);
          return $field.appendTo($form);
        };
        addField({
          name: up.proxy.config.wrapMethodParam,
          value: method
        });
        if (csrfField = up.rails.csrfField()) {
          addField(csrfField);
        }
        u.each(u.requestDataAsArray(options.data), addField);
        $form.hide().appendTo('body');
        return submitForm($form);
      }
    };

    /**
    For mocking in specs.
    
    @method submitForm
     */
    submitForm = function($form) {
      return $form.submit();
    };

    /**
    For mocking in specs.
    
    @method setLocationHref
     */
    setLocationHref = function(url) {
      return location.href = url;
    };

    /**
    A cross-browser way to interact with `console.log`, `console.error`, etc.
    
    This function falls back to `console.log` if the output stream is not implemented.
    It also prints substitution strings (e.g. `console.log("From %o to %o", "a", "b")`)
    as a single string if the browser console does not support substitution strings.
    
    \#\#\#\# Example
    
        up.browser.puts('log', 'Hi world');
        up.browser.puts('error', 'There was an error in %o', obj);
    
    @function up.browser.puts
    @internal
     */
    puts = function() {
      var args, message, stream;
      stream = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      if (canLogSubstitution()) {
        return console[stream].apply(console, args);
      } else {
        message = sprintf.apply(null, args);
        return console[stream](message);
      }
    };
    CONSOLE_PLACEHOLDERS = /\%[odisf]/g;
    stringifyArg = function(arg) {
      var $arg, attr, closer, j, len, maxLength, ref, string, value;
      maxLength = 200;
      closer = '';
      if (u.isString(arg)) {
        string = arg.replace(/[\n\r\t ]+/g, ' ');
        string = string.replace(/^[\n\r\t ]+/, '');
        string = string.replace(/[\n\r\t ]$/, '');
        string = "\"" + string + "\"";
        closer = '"';
      } else if (u.isUndefined(arg)) {
        string = 'undefined';
      } else if (u.isNumber(arg) || u.isFunction(arg)) {
        string = arg.toString();
      } else if (u.isArray(arg)) {
        string = "[" + (u.map(arg, stringifyArg).join(', ')) + "]";
        closer = ']';
      } else if (u.isJQuery(arg)) {
        string = "$(" + (u.map(arg, stringifyArg).join(', ')) + ")";
        closer = ')';
      } else if (u.isElement(arg)) {
        $arg = $(arg);
        string = "<" + (arg.tagName.toLowerCase());
        ref = ['id', 'name', 'class'];
        for (j = 0, len = ref.length; j < len; j++) {
          attr = ref[j];
          if (value = $arg.attr(attr)) {
            string += " " + attr + "=\"" + value + "\"";
          }
        }
        string += ">";
        closer = '>';
      } else {
        string = JSON.stringify(arg);
      }
      if (string.length > maxLength) {
        string = (string.substr(0, maxLength)) + " …";
        string += closer;
      }
      return string;
    };

    /**
    See https://developer.mozilla.org/en-US/docs/Web/API/Console#Using_string_substitutions
    
    @function up.browser.sprintf
    @internal
     */
    sprintf = function() {
      var args, message;
      message = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      return sprintfWithFormattedArgs.apply(null, [u.identity, message].concat(slice.call(args)));
    };

    /**
    @function up.browser.sprintfWithBounds
    @internal
     */
    sprintfWithFormattedArgs = function() {
      var args, formatter, i, message;
      formatter = arguments[0], message = arguments[1], args = 3 <= arguments.length ? slice.call(arguments, 2) : [];
      if (u.isBlank(message)) {
        return '';
      }
      i = 0;
      return message.replace(CONSOLE_PLACEHOLDERS, function() {
        var arg;
        arg = args[i];
        arg = formatter(stringifyArg(arg));
        i += 1;
        return arg;
      });
    };
    url = function() {
      return location.href;
    };
    isIE8OrWorse = u.memoize(function() {
      return u.isUndefined(document.addEventListener);
    });
    isIE9OrWorse = u.memoize(function() {
      return isIE8OrWorse() || navigator.appVersion.indexOf('MSIE 9.') !== -1;
    });

    /**
    Returns whether this browser supports manipulation of the current URL
    via [`history.pushState`](https://developer.mozilla.org/en-US/docs/Web/API/History/pushState).
    
    When Unpoly is asked to change history on a browser that doesn't support
    `pushState` (e.g. through [`up.follow`](/up.follow)), it will gracefully
    fall back to a full page load.
    
    @function up.browser.canPushState
    @return {Boolean}
    @experimental
     */
    canPushState = u.memoize(function() {
      return u.isDefined(history.pushState) && initialRequestMethod() === 'get';
    });

    /**
    Returns whether this browser supports animation using
    [CSS transitions](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions).
    
    When Unpoly is asked to animate history on a browser that doesn't support
    CSS transitions (e.g. through [`up.animate`](/up.animate)), it will skip the
    animation by instantly jumping to the last frame.
    
    @function up.browser.canCssTransition
    @return {Boolean}
    @experimental
     */
    canCssTransition = u.memoize(function() {
      return 'transition' in document.documentElement.style;
    });

    /**
    Returns whether this browser supports the DOM event [`input`](https://developer.mozilla.org/de/docs/Web/Events/input).
    
    @function up.browser.canInputEvent
    @return {Boolean}
    @experimental
     */
    canInputEvent = u.memoize(function() {
      return 'oninput' in document.createElement('input');
    });

    /**
    Returns whether this browser supports the [`FormData`](https://developer.mozilla.org/en-US/docs/Web/API/FormData)
    interface.
    
    @function up.browser.canFormData
    @return {Boolean}
    @experimental
     */
    canFormData = u.memoize(function() {
      return !!window.FormData;
    });

    /**
    Returns whether this browser supports
    [string substitution](https://developer.mozilla.org/en-US/docs/Web/API/console#Using_string_substitutions)
    in `console` functions.
    
    \#\#\#\# Example for string substition
    
        console.log("Hello %o!", "Judy");
    
    @function up.browser.canLogSubstitution
    @return {Boolean}
    @internal
     */
    canLogSubstitution = u.memoize(function() {
      return !isIE9OrWorse();
    });
    isRecentJQuery = u.memoize(function() {
      var major, minor, parts, version;
      version = $.fn.jquery;
      parts = version.split('.');
      major = parseInt(parts[0]);
      minor = parseInt(parts[1]);
      return major >= 2 || (major === 1 && minor >= 9);
    });
    popCookie = function(name) {
      var ref, value;
      value = (ref = document.cookie.match(new RegExp(name + "=(\\w+)"))) != null ? ref[1] : void 0;
      if (u.isPresent(value)) {
        document.cookie = name + '=; expires=Thu, 01-Jan-70 00:00:01 GMT; path=/';
      }
      return value;
    };

    /**
    @function up,browser.whenConfirmed
    @return {Promise}
    @param {String} options.confirm
    @param {Boolean} options.preload
    @internal
     */
    whenConfirmed = function(options) {
      if (options.preload || u.isBlank(options.confirm) || window.confirm(options.confirm)) {
        return u.resolvedPromise();
      } else {
        return u.unresolvablePromise();
      }
    };
    initialRequestMethod = u.memoize(function() {
      return (popCookie('_up_request_method') || 'get').toLowerCase();
    });

    /**
    Returns whether Unpoly supports the current browser.
    
    This also returns `true` if Unpoly only support some features, but falls back
    gracefully for other features. E.g. IE9 is almost fully supported, but due to
    its lack of [`history.pushState`](https://developer.mozilla.org/en-US/docs/Web/API/History/pushState)
    Unpoly falls back to a full page load when asked to manipulate history.
    
    Currently Unpoly supports IE9 with jQuery 1.9+.
    On older browsers Unpoly will prevent itself from [booting](/up.boot)
    and ignores all registered [event handlers](/up.on) and [compilers](/up.compiler).
    This leaves you with a classic server-side application.
    
    @function up.browser.isSupported
    @experimental
     */
    isSupported = function() {
      return (!isIE8OrWorse()) && isRecentJQuery();
    };

    /**
    @internal
     */
    installPolyfills = function() {
      var j, len, method, ref;
      if (window.console == null) {
        window.console = {};
      }
      ref = ['debug', 'info', 'warn', 'error', 'group', 'groupCollapsed', 'groupEnd'];
      for (j = 0, len = ref.length; j < len; j++) {
        method = ref[j];
        if (console[method] == null) {
          console[method] = function() {
            var args;
            args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
            return puts.apply(null, ['log'].concat(slice.call(args)));
          };
        }
      }
      return console.log != null ? console.log : console.log = u.noop;
    };

    /**
    @internal
     */
    sessionStorage = u.memoize(function() {
      return window.sessionStorage || {
        getItem: u.noop,
        setItem: u.noop,
        removeItem: u.noop
      };
    });
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      url: url,
      loadPage: loadPage,
      whenConfirmed: whenConfirmed,
      canPushState: canPushState,
      canCssTransition: canCssTransition,
      canInputEvent: canInputEvent,
      canFormData: canFormData,
      canLogSubstitution: canLogSubstitution,
      isSupported: isSupported,
      installPolyfills: installPolyfills,
      puts: puts,
      sprintf: sprintf,
      sprintfWithFormattedArgs: sprintfWithFormattedArgs,
      sessionStorage: sessionStorage
    };
  })(jQuery);

}).call(this);

/**
Events
======

Most Unpoly interactions emit DOM events that are prefixed with `up:`.

    $(document).on('up:modal:opened', function(event) {
      console.log('A new modal has just opened!');
    });

Events often have both present ([`up:modal:open`](/up:modal:open))
and past forms ([`up:modal:opened`](/up:modal:opened)).

You can usually prevent an action by listening to the present form
and call `preventDefault()` on the `event` object:

    $(document).on('up:modal:open', function(event) {
      if (event.url == '/evil') {
        // Prevent the modal from opening
        event.preventDefault();
      }
    });


A better way to bind event listeners
------------------------------------

Instead of using jQuery to bind  an event handler to `document`, you can also
use the more convenient [`up.on`](/up.on):

    up.on('click', 'button', function(event, $button) {
      // $button is a jQuery collection containing
      // the clicked <button> element
    });

This improves jQuery's [`on`](http://api.jquery.com/on/) in multiple ways:

- Event listeners on [unsupported browsers](/up.browser.isSupported) are silently discarded,
  leaving you with an application without Javascript. This is typically preferable to
  a soup of randomly broken Javascript in ancient browsers.
- A jQuery object with the target element is automatically passed to the event handler
  as a second argument. You no longer need to write `$(this)` in the handler function.
- You use an [`up-data`](/up-data) attribute to [attach structured data](/up.on#attaching-structured-data)
  to observed elements.

@class up.bus
 */

(function() {
  var slice = [].slice;

  up.bus = (function($) {
    var boot, emit, emitReset, forgetUpDescription, live, liveUpDescriptions, logEmission, nextUpDescriptionNumber, nobodyPrevents, onEscape, rememberUpDescription, restoreSnapshot, snapshot, u, unbind, upDescriptionNumber, upDescriptionToJqueryDescription, upListenerToJqueryListener, whenEmitted;
    u = up.util;
    liveUpDescriptions = {};
    nextUpDescriptionNumber = 0;

    /**
    Convert an Unpoly style listener (second argument is the event target
    as a jQuery collection) to a vanilla jQuery listener
    
    @function upListenerToJqueryListener
    @internal
     */
    upListenerToJqueryListener = function(upListener) {
      return function(event) {
        var $me;
        $me = event.$element || $(this);
        return upListener.apply($me.get(0), [event, $me, up.syntax.data($me)]);
      };
    };

    /**
    Converts an argument list for `up.on` to an argument list for `jQuery.on`.
    This involves rewriting the listener signature in the last argument slot.
    
    @function upDescriptionToJqueryDescription
    @internal
     */
    upDescriptionToJqueryDescription = function(upDescription, isNew) {
      var jqueryDescription, jqueryListener, upListener;
      jqueryDescription = u.copy(upDescription);
      upListener = jqueryDescription.pop();
      jqueryListener = void 0;
      if (isNew) {
        jqueryListener = upListenerToJqueryListener(upListener);
        upListener._asJqueryListener = jqueryListener;
        upListener._descriptionNumber = ++nextUpDescriptionNumber;
      } else {
        jqueryListener = upListener._asJqueryListener;
        jqueryListener || up.fail('up.off: The event listener %o was never registered through up.on');
      }
      jqueryDescription.push(jqueryListener);
      return jqueryDescription;
    };

    /**
    Listens to an event on `document`.
    
    The given event listener which will be executed whenever the
    given event is [triggered](/up.emit) on the given selector:
    
        up.on('click', '.button', function(event, $element) {
          console.log("Someone clicked the button %o", $element);
        });
    
    This is roughly equivalent to binding an event listener to `document`:
    
        $(document).on('click', '.button', function(event) {
          console.log("Someone clicked the button %o", $(this));
        });
    
    Other than jQuery, Unpoly will silently discard event listeners
    on [unsupported browsers](/up.browser.isSupported).
    
    \#\#\#\# Attaching structured data
    
    In case you want to attach structured data to the event you're observing,
    you can serialize the data to JSON and put it into an `[up-data]` attribute:
    
        <span class="person" up-data="{ age: 18, name: 'Bob' }">Bob</span>
        <span class="person" up-data="{ age: 22, name: 'Jim' }">Jim</span>
    
    The JSON will parsed and handed to your event handler as a third argument:
    
        up.on('click', '.person', function(event, $element, data) {
          console.log("This is %o who is %o years old", data.name, data.age);
        });
    
    \#\#\#\# Unbinding an event listener
    
    `up.on` returns a function that unbinds the event listeners when called:
    
        // Define the listener
        var listener =  function() { ... };
    
        // Binding the listener returns an unbind function
        unbind = up.on('click', listener);
    
        // Unbind the listener
        unbind()
    
    There is also a function [`up.off`](/up.off) which you can use for the same purpose:
    
        // Define the listener
        var listener =  function() { ... };
    
        // Bind the listener
        up.on('click', listener);
    
        // Unbind the listener
        up.off('click', listener)
    
    \#\#\#\# Migrating jQuery event handlers to `up.on`
    
    Within the event handler, Unpoly will bind `this` to the
    native DOM element to help you migrate your existing jQuery code to
    this new syntax.
    
    So if you had this before:
    
        $(document).on('click', '.button', function() {
          $(this).something();
        });
    
    ... you can simply copy the event handler to `up.on`:
    
        up.on('click', '.button', function() {
          $(this).something();
        });
    
    @function up.on
    @param {String} events
      A space-separated list of event names to bind.
    @param {String} [selector]
      The selector of an element on which the event must be triggered.
      Omit the selector to listen to all events with that name, regardless
      of the event target.
    @param {Function(event, $element, data)} behavior
      The handler that should be called.
      The function takes the affected element as the first argument (as a jQuery object).
      If the element has an [`up-data`](/up-data) attribute, its value is parsed as JSON
      and passed as a second argument.
    @return {Function}
      A function that unbinds the event listeners when called.
    @stable
     */
    live = function() {
      var jqueryDescription, ref, upDescription;
      upDescription = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      if (!up.browser.isSupported()) {
        return (function() {});
      }
      jqueryDescription = upDescriptionToJqueryDescription(upDescription, true);
      rememberUpDescription(upDescription);
      (ref = $(document)).on.apply(ref, jqueryDescription);
      return function() {
        return unbind.apply(null, upDescription);
      };
    };

    /**
    Unbinds an event listener previously bound with [`up.on`](/up.on).
    
    \#\#\#\# Example
    
    Let's say you are listing to clicks on `.button` elements:
    
        var listener = function() { ... };
        up.on('click', '.button', listener);
    
    You can stop listening to these events like this:
    
        up.off('click', '.button', listener);
    
    Note that you need to pass `up.off` a reference to the same listener function
    that was passed to `up.on` earlier.
    
    @function up.off
    @stable
     */
    unbind = function() {
      var jqueryDescription, ref, upDescription;
      upDescription = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      jqueryDescription = upDescriptionToJqueryDescription(upDescription, false);
      forgetUpDescription(upDescription);
      return (ref = $(document)).off.apply(ref, jqueryDescription);
    };
    rememberUpDescription = function(upDescription) {
      var number;
      number = upDescriptionNumber(upDescription);
      return liveUpDescriptions[number] = upDescription;
    };
    forgetUpDescription = function(upDescription) {
      var number;
      number = upDescriptionNumber(upDescription);
      return delete liveUpDescriptions[number];
    };
    upDescriptionNumber = function(upDescription) {
      return u.last(upDescription)._descriptionNumber;
    };

    /**
    Emits a event with the given name and properties.
    
    The event will be triggered as a jQuery event on `document`.
    
    Other code can subscribe to events with that name using
    [`up.on`](/up.on) or by [binding a jQuery event listener](http://api.jquery.com/on/) to `document`.
    
    \#\#\#\# Example
    
        up.on('my:event', function(event) {
          console.log(event.foo);
        });
    
        up.emit('my:event', { foo: 'bar' });
         * Prints "bar" to the console
    
    @function up.emit
    @param {String} eventName
      The name of the event.
    @param {Object} [eventProps={}]
      A list of properties to become part of the event object
      that will be passed to listeners. Note that the event object
      will by default include properties like `preventDefault()`
      or `stopPropagation()`.
    @param {jQuery} [eventProps.$element=$(document)]
      The element on which the event is triggered.
    @param {String|Array} [eventProps.message]
      A message to print to the console when the event is emitted.
      If omitted, a default message is printed.
      Set this to `false` to prevent any console output.
    @experimental
     */
    emit = function(eventName, eventProps) {
      var $target, event;
      if (eventProps == null) {
        eventProps = {};
      }
      event = $.Event(eventName, eventProps);
      if ($target = eventProps.$element) {
        delete eventProps.$element;
      } else {
        $target = $(document);
      }
      logEmission(eventName, eventProps);
      $target.trigger(event);
      return event;
    };
    logEmission = function(eventName, eventProps) {
      var niceMessage, niceMessageArgs, ref;
      if (eventProps.hasOwnProperty('message')) {
        niceMessage = eventProps.message;
        delete eventProps.message;
        if (u.isArray(niceMessage)) {
          ref = niceMessage, niceMessage = ref[0], niceMessageArgs = 2 <= ref.length ? slice.call(ref, 1) : [];
        } else {
          niceMessageArgs = [];
        }
        if (niceMessage) {
          if (u.isPresent(eventProps)) {
            return up.puts.apply(up, [niceMessage + " (%s (%o))"].concat(slice.call(niceMessageArgs), [eventName], [eventProps]));
          } else {
            return up.puts.apply(up, [niceMessage + " (%s)"].concat(slice.call(niceMessageArgs), [eventName]));
          }
        }
      } else {
        if (u.isPresent(eventProps)) {
          return up.puts('Emitted event %s (%o)', eventName, eventProps);
        } else {
          return up.puts('Emitted event %s', eventName);
        }
      }
    };

    /**
    [Emits an event](/up.emit) and returns whether no listener
    has prevented the default action.
    
    @function up.bus.nobodyPrevents
    @param {String} eventName
    @param {Object} eventProps
    @param {String|Array} [eventProps.message]
    @return {Boolean}
      whether no listener has prevented the default action
    @experimental
     */
    nobodyPrevents = function() {
      var args, event;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      event = emit.apply(null, args);
      if (event.isDefaultPrevented()) {
        up.puts("An observer prevented the event %s", args[0]);
        return false;
      } else {
        return true;
      }
    };

    /**
    [Emits](/up.emit) the given event and returns a promise
    that will be resolved if no listener has prevented the default action.
    
    If any listener prevented the default listener
    the returned promise will never be resolved.
    
    @function up.bus.whenEmitted
    @param {String} eventName
    @param {Object} eventProps
    @param {String|Array} [eventProps.message]
    @return {Promise}
    @experimental
     */
    whenEmitted = function() {
      var args, deferred;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      deferred = $.Deferred();
      if (nobodyPrevents.apply(null, args)) {
        deferred.resolve();
      }
      return deferred.promise();
    };

    /**
    Registers an event listener to be called when the user
    presses the `Escape` key.
    
    @function up.bus.onEscape
    @param {Function} listener
      The listener function to register.
    @return {Function}
      A function that unbinds the event listeners when called.
    @experimental
     */
    onEscape = function(listener) {
      return live('keydown', 'body', function(event) {
        if (u.escapePressed(event)) {
          return listener(event);
        }
      });
    };

    /**
    Makes a snapshot of the currently registered event listeners,
    to later be restored through [`up.bus.reset`](/up.bus.reset).
    
    @internal
     */
    snapshot = function() {
      var description, i, len, results;
      results = [];
      for (i = 0, len = liveUpDescriptions.length; i < len; i++) {
        description = liveUpDescriptions[i];
        results.push(description.isDefault = true);
      }
      return results;
    };

    /**
    Resets the list of registered event listeners to the
    moment when the framework was booted.
    
    @internal
     */
    restoreSnapshot = function() {
      var description, doomedDescriptions, i, len, results;
      doomedDescriptions = u.reject(liveUpDescriptions, function(description) {
        return description.isDefault;
      });
      results = [];
      for (i = 0, len = doomedDescriptions.length; i < len; i++) {
        description = doomedDescriptions[i];
        results.push(unbind.apply(null, description));
      }
      return results;
    };

    /**
    Resets Unpoly to the state when it was booted.
    All custom event handlers, animations, etc. that have been registered
    will be discarded.
    
    This is an internal method for to enable unit testing.
    Don't use this in production.
    
    Emits event [`up:framework:reset`](/up:framework:reset).
    
    @function up.reset
    @experimental
     */
    emitReset = function() {
      return emit('up:framework:reset', {
        message: 'Resetting framework'
      });
    };

    /**
    This event is [emitted](/up.emit) when Unpoly is [reset](/up.reset) during unit tests.
    
    @event up:framework:reset
    @experimental
     */

    /**
    Boots the Unpoly framework.
    
    **This is called automatically** by including the Unpoly Javascript files.
    
    Unpoly will not boot if the current browser is [not supported](/up.browser.isSupported).
    This leaves you with a classic server-side application on legacy browsers.
    
    Emits the [`up:framework:boot`](/up:framework:boot) event.
    
    @function up.boot
    @internal
     */
    boot = function() {
      if (up.browser.isSupported()) {
        up.browser.installPolyfills();
        emit('up:framework:boot', {
          message: 'Booting framework'
        });
        emit('up:framework:booted', {
          message: 'Framework booted'
        });
        return u.nextFrame(function() {
          return u.whenReady().then(function() {
            emit('up:app:boot', {
              message: 'Booting user application'
            });
            return emit('up:app:booted', {
              message: 'User application booted'
            });
          });
        });
      }
    };

    /**
    This event is [emitted](/up.emit) when Unpoly [starts to boot](/up.boot).
    
    @event up:framework:boot
    @internal
     */
    live('up:framework:booted', snapshot);
    live('up:framework:reset', restoreSnapshot);
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      on: live,
      off: unbind,
      emit: emit,
      nobodyPrevents: nobodyPrevents,
      whenEmitted: whenEmitted,
      onEscape: onEscape,
      emitReset: emitReset,
      boot: boot
    };
  })(jQuery);

  up.on = up.bus.on;

  up.off = up.bus.off;

  up.emit = up.bus.emit;

  up.reset = up.bus.emitReset;

  up.boot = up.bus.boot;

}).call(this);

/**
Logging
=======

Unpoly can print debugging information to the developer console, e.g.:

- Which [events](/up.bus) are called
- When we're [making requests to the network](/up.proxy)
- Which [compilers](/up.syntax) are applied to which elements

You can activate logging by calling [`up.log.enable()`](/up.log.enable).
The output can be configured using the [`up.log.config`](/up.log.config) property.

@class up.log
 */

(function() {
  var slice = [].slice;

  up.log = (function($) {
    var SESSION_KEY_ENABLED, b, config, debug, disable, enable, error, group, prefix, printBanner, puts, reset, setEnabled, u, warn;
    u = up.util;
    b = up.browser;
    SESSION_KEY_ENABLED = 'up.log.enabled';

    /**
    Configures the logging output on the developer console.
    
    @property up.log.config
    @param {Boolean} [options.enabled=false]
      Whether Unpoly will print debugging information to the developer console.
    
      Debugging information includes which elements are being [compiled](/up.syntax)
      and which [events](/up.bus) are being emitted.
      Note that errors will always be printed, regardless of this setting.
    @param {Boolean} [options.collapse=false]
      Whether debugging information is printed as a collapsed tree.
    
      Set this to `true` if you are overwhelmed by the debugging information Unpoly
      prints to the developer console.
    @param {String} [options.prefix='[UP] ']
      A string to prepend to Unpoly's logging messages so you can distinguish it from your own messages.
    @stable
     */
    config = u.config({
      prefix: '[UP] ',
      enabled: u.option(b.sessionStorage().getItem(SESSION_KEY_ENABLED), false),
      collapse: false
    });
    reset = function() {
      return config.reset();
    };
    prefix = function(message) {
      return "" + config.prefix + message;
    };

    /**
    Prints a debugging message to the browser console.
    
    @function up.debug
    @param {String} message
    @param {Array} args...
    @internal
     */
    debug = function() {
      var args, message;
      message = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      if (config.enabled && message) {
        return b.puts.apply(b, ['debug', prefix(message)].concat(slice.call(args)));
      }
    };

    /**
    Prints a logging message to the browser console.
    
    @function up.puts
    @param {String} message
    @param {Array} args...
    @internal
     */
    puts = function() {
      var args, message;
      message = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      if (config.enabled && message) {
        return b.puts.apply(b, ['log', prefix(message)].concat(slice.call(args)));
      }
    };

    /**
    @function up.log.warn
    @internal
     */
    warn = function() {
      var args, message;
      message = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      if (config.enabled && message) {
        return b.puts.apply(b, ['warn', prefix(message)].concat(slice.call(args)));
      }
    };

    /**
    - Makes sure the group always closes
    - Does not make a group if the message is nil
    
    @function up.log.group
    @internal
     */
    group = function() {
      var args, block, message, stream;
      message = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      block = args.pop();
      if (config.enabled && message) {
        stream = config.collapse ? 'groupCollapsed' : 'group';
        b.puts.apply(b, [stream, prefix(message)].concat(slice.call(args)));
        try {
          return block();
        } finally {
          if (message) {
            b.puts('groupEnd');
          }
        }
      } else {
        return block();
      }
    };

    /**
    @function up.log.error
    @internal
     */
    error = function() {
      var args, message;
      message = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      if (message) {
        return b.puts.apply(b, ['error', prefix(message)].concat(slice.call(args)));
      }
    };
    printBanner = function() {
      var banner;
      banner = " __ _____  ___  ___  / /_ __\n" + ("/ // / _ \\/ _ \\/ _ \\/ / // /  " + up.version + "\n") + "\\___/_//_/ .__/\\___/_/\\_. / \n" + "        / /            / /\n" + "\n";
      if (config.enabled) {
        banner += "Call `up.log.disable()` to disable logging for this session.";
      } else {
        banner += "Call `up.log.enable()` to enable logging for this session.";
      }
      return b.puts('log', banner);
    };
    up.on('up:framework:boot', printBanner);
    up.on('up:framework:reset', reset);
    setEnabled = function(value) {
      b.sessionStorage().setItem(SESSION_KEY_ENABLED, value);
      return config.enabled = value;
    };

    /**
    Makes future Unpoly events print vast amounts of debugging information to the developer console.
    
    Debugging information includes which elements are being [compiled](/up.syntax)
    and which [events](/up.bus) are being emitted.
    
    @function up.log.enable
    @stable
     */
    enable = function() {
      return setEnabled(true);
    };

    /**
    Prevents future Unpoly events from printing vast amounts of debugging information to the developer console.
    
    Errors will still be printed, even with logging disabled.
    
    @function up.log.disable
    @stable
     */
    disable = function() {
      return setEnabled(false);
    };
    return {
      puts: puts,
      debug: debug,
      error: error,
      warn: warn,
      group: group,
      config: config,
      enable: enable,
      disable: disable
    };
  })(jQuery);

  up.puts = up.log.puts;

}).call(this);

/**
Toast alerts
============

@class up.toast
 */

(function() {
  var slice = [].slice;

  up.toast = (function($) {
    var VARIABLE_FORMATTER, addAction, b, close, isOpen, messageToHtml, open, reset, state, u;
    u = up.util;
    b = up.browser;
    VARIABLE_FORMATTER = function(arg) {
      return "<span class='up-toast-variable'>" + (u.escapeHtml(arg)) + "</span>";
    };
    state = u.config({
      $toast: null
    });
    reset = function() {
      close();
      return state.reset();
    };
    messageToHtml = function(message) {
      if (u.isArray(message)) {
        message[0] = u.escapeHtml(message[0]);
        message = b.sprintfWithFormattedArgs.apply(b, [VARIABLE_FORMATTER].concat(slice.call(message)));
      } else {
        message = u.escapeHtml(message);
      }
      return message;
    };
    isOpen = function() {
      return !!state.$toast;
    };
    addAction = function($actions, label, callback) {
      var $action;
      $action = $('<span class="up-toast-action"></span>').text(label);
      $action.on('click', callback);
      return $action.appendTo($actions);
    };
    open = function(message, options) {
      var $actions, $message, $toast, action;
      if (options == null) {
        options = {};
      }
      close();
      $toast = $('<div class="up-toast"></div>').prependTo('body');
      $message = $('<div class="up-toast-message"></div>').appendTo($toast);
      $actions = $('<div class="up-toast-actions"></div>').appendTo($toast);
      message = messageToHtml(message);
      $message.html(message);
      if (action = options.action || options.inspect) {
        addAction($actions, action.label, action.callback);
      }
      addAction($actions, 'Close', close);
      return state.$toast = $toast;
    };
    close = function() {
      if (isOpen()) {
        state.$toast.remove();
        return state.$toast = null;
      }
    };
    up.on('up:framework:reset', reset);
    return {
      open: open,
      close: close,
      reset: reset,
      isOpen: isOpen
    };
  })(jQuery);

}).call(this);

/**
Enhancing elements
==================

Unpoly keeps a persistent Javascript environment during page transitions.
If you wire Javascript to run on `ready` or `onload` events, those scripts will
only run during the initial page load. Subsequently [inserted](/up.replace)
page fragments will not be compiled.

Let's say your Javascript plugin wants you to call `lightboxify()`
on links that should open a lightbox. You decide to
do this for all links with an `lightbox` class:

    <a href="river.png" class="lightbox">River</a>
    <a href="ocean.png" class="lightbox">Ocean</a>

You should **avoid** doing this on page load:

    $(document).on('ready', function() {
      $('a.lightbox').lightboxify();
    });

Instead you should register a [`compiler`](/up.compiler) for the `a.lightbox` selector:

    up.compiler('a.lightbox', function($element) {
      $element.lightboxify();
    });

The compiler function will be called on matching elements when
the page loads, or whenever a matching fragment is [updated through Unpoly](/up.replace)
later.

@class up.syntax
 */

(function() {
  var slice = [].slice;

  up.syntax = (function($) {
    var DESTRUCTABLE_CLASS, DESTRUCTORS_KEY, addDestructor, applyCompiler, buildCompiler, clean, compile, compiler, compilers, data, discoverDestructor, insertCompiler, macro, macros, reset, snapshot, u;
    u = up.util;
    DESTRUCTABLE_CLASS = 'up-destructable';
    DESTRUCTORS_KEY = 'up-destructors';
    compilers = [];
    macros = [];

    /**
    Registers a function to be called whenever an element with
    the given selector is inserted into the DOM.
    
        up.compiler('.action', function($element) {
          // your code here
        });
    
    The functions will be called on elements matching `.action` when
    the page loads, or whenever a matching fragment is [updated through Unpoly](/up.replace)
    later.
    
    If you have used Angular.js before, this resembles
    [Angular directives](https://docs.angularjs.org/guide/directive).
    
    
    \#\#\#\# Integrating jQuery plugins
    
    `up.compiler` is a great way to integrate jQuery plugins.
    Let's say your Javascript plugin wants you to call `lightboxify()`
    on links that should open a lightbox. You decide to
    do this for all links with an `lightbox` class:
    
        <a href="river.png" class="lightbox">River</a>
        <a href="ocean.png" class="lightbox">Ocean</a>
    
    This Javascript will do exactly that:
    
        up.compiler('a.lightbox', function($element) {
          $element.lightboxify();
        });
    
    
    \#\#\#\# Custom elements
    
    You can use `up.compiler` to implement custom elements like this:
    
        <clock></clock>
    
    Here is the Javascript that inserts the current time into to these elements:
    
        up.compiler('clock', function($element) {
          var now = new Date();
          $element.text(now.toString()));
        });
    
    
    \#\#\#\# Cleaning up after yourself
    
    If your compiler returns a function, Unpoly will use this as a *destructor* to
    clean up if the element leaves the DOM. Note that in Unpoly the same DOM ad Javascript environment
    will persist through many page loads, so it's important to not create
    [memory leaks](https://makandracards.com/makandra/31325-how-to-create-memory-leaks-in-jquery).
    
    You should clean up after yourself whenever your compilers have global
    side effects, like a [`setInterval`](https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval)
    or event handlers bound to the document root.
    
    Here is a version of `<clock>` that updates
    the time every second, and cleans up once it's done. Note how it returns
    a function that calls `clearInterval`:
    
        up.compiler('clock', function($element) {
    
          function update() {
            var now = new Date();
            $element.text(now.toString()));
          }
    
          setInterval(update, 1000);
    
          return function() {
            clearInterval(update);
          };
    
        });
    
    If we didn't clean up after ourselves, we would have many ticking intervals
    operating on detached DOM elements after we have created and removed a couple
    of `<clock>` elements.
    
    
    \#\#\#\# Attaching structured data
    
    In case you want to attach structured data to the event you're observing,
    you can serialize the data to JSON and put it into an `[up-data]` attribute.
    For instance, a container for a [Google Map](https://developers.google.com/maps/documentation/javascript/tutorial)
    might attach the location and names of its marker pins:
    
        <div class="google-map" up-data="[
          { lat: 48.36, lng: 10.99, title: 'Friedberg' },
          { lat: 48.75, lng: 11.45, title: 'Ingolstadt' }
        ]"></div>
    
    The JSON will parsed and handed to your compiler as a second argument:
    
        up.compiler('.google-map', function($element, pins) {
    
          var map = new google.maps.Map($element);
    
          pins.forEach(function(pin) {
            var position = new google.maps.LatLng(pin.lat, pin.lng);
            new google.maps.Marker({
              position: position,
              map: map,
              title: pin.title
            });
          });
    
        });
    
    
    \#\#\#\# Migrating jQuery event handlers to `up.compiler`
    
    Within the compiler, Unpoly will bind `this` to the
    native DOM element to help you migrate your existing jQuery code to
    this new syntax.
    
    So if you had this before:
    
        $(function() {
          $('.action').on('click', function() {
            $(this).something();
          });
        });
    
    ... you can reuse the event handler like this:
    
        $('.action').compiler(function($element) {
          $element.on('click', function() {
            $(this).something();
          });
        });
    
    
    @function up.compiler
    @param {String} selector
      The selector to match.
    @param {Number} [options.priority=0]
      The priority of this compilers.
      Compilers with a higher priority are run first.
      Two compilers with the same priority are run in the order they were registered.
    @param {Boolean} [options.batch=false]
      If set to `true` and a fragment insertion contains multiple
      elements matching the selector, `compiler` is only called once
      with a jQuery collection containing all matching elements. 
    @param {Boolean} [options.keep=false]
      If set to `true` compiled fragment will be [persisted](/up-keep) during
      [page updates](/a-up-target).
    
      This has the same effect as setting an `up-keep` attribute on the element.
    @param {Function($element, data)} compiler
      The function to call when a matching element is inserted.
      The function takes the new element as the first argument (as a jQuery object).
      If the element has an [`up-data`](/up-data) attribute, its value is parsed as JSON
      and passed as a second argument.
    
      The function may return a destructor function that destroys the compiled
      object before it is removed from the DOM. The destructor is supposed to
      clear global state such as time-outs and event handlers bound to the document.
      The destructor is *not* expected to remove the element from the DOM, which
      is already handled by [`up.destroy`](/up.destroy).
    @stable
     */
    compiler = function() {
      var args;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      return insertCompiler.apply(null, [compilers].concat(slice.call(args)));
    };

    /**
    Registers a [compiler](/up.compiler) that is run before all other compilers.
    
    You can use `up.macro` to register a compiler that sets other UJS attributes.
    
    \#\#\#\# Example
    
    You will sometimes find yourself setting the same combination of UJS attributes again and again:
    
        <a href="/page1" up-target=".content" up-transition="cross-fade" up-duration="300">Page 1</a>
        <a href="/page2" up-target=".content" up-transition="cross-fade" up-duration="300">Page 2</a>
        <a href="/page3" up-target=".content" up-transition="cross-fade" up-duration="300">Page 3</a>
    
    We would much rather define a new `content-link` attribute that let's us
    write the same links like this:
    
        <a href="/page1" content-link>Page 1</a>
        <a href="/page2" content-link>Page 2</a>
        <a href="/page3" content-link>Page 3</a>
    
    We can define the `content-link` attribute by registering a macro that
    sets the `up-target`, `up-transition` and `up-duration` attributes for us:
    
        up.macro('[content-link]', function($link) {
          $link.attr('up-target', '.content');
          $link.attr('up-transition', 'cross-fade');
          $link.attr('up-duration', '300');
        });
    
    Examples for built-in macros are [`up-dash`](/up-dash) and [`up-expand`](/up-expand).
    
    @function up.macro
    @param {String} selector
      The selector to match.
    @param {Object} options
      See options for [`up.compiler`](/up.compiler).
    @param {Function($element, data)} compiler
      The function to call when a matching element is inserted.
      See [`up.compiler`](/up.compiler) for details.
    @stable
     */
    macro = function() {
      var args;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      return insertCompiler.apply(null, [macros].concat(slice.call(args)));
    };
    buildCompiler = function() {
      var args, callback, options, selector;
      selector = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      callback = args.pop();
      options = u.options(args[0], {
        priority: 0
      });
      if (options.priority === 'first') {
        options.priority = Number.POSITIVE_INFINITY;
      } else if (options.priority === 'last') {
        options.priority = Number.NEGATIVE_INFINITY;
      }
      return {
        selector: selector,
        callback: callback,
        priority: options.priority,
        batch: options.batch,
        keep: options.keep
      };
    };
    insertCompiler = function() {
      var args, index, newCompiler, oldCompiler, queue;
      queue = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      if (!up.browser.isSupported()) {
        return;
      }
      newCompiler = buildCompiler.apply(null, args);
      index = 0;
      while ((oldCompiler = queue[index]) && (oldCompiler.priority >= newCompiler.priority)) {
        index += 1;
      }
      return queue.splice(index, 0, newCompiler);
    };
    applyCompiler = function(compiler, $jqueryElement, nativeElement) {
      var destructor, returnValue, value;
      up.puts((!compiler.isDefault ? "Compiling '%s' on %o" : void 0), compiler.selector, nativeElement);
      if (compiler.keep) {
        value = u.isString(compiler.keep) ? compiler.keep : '';
        $jqueryElement.attr('up-keep', value);
      }
      returnValue = compiler.callback.apply(nativeElement, [$jqueryElement, data($jqueryElement)]);
      if (destructor = discoverDestructor(returnValue)) {
        return addDestructor($jqueryElement, destructor);
      }
    };
    discoverDestructor = function(returnValue) {
      if (u.isFunction(returnValue)) {
        return returnValue;
      } else if (u.isArray(returnValue) && u.all(returnValue, u.isFunction)) {
        return u.sequence.apply(u, returnValue);
      }
    };
    addDestructor = function($jqueryElement, destructor) {
      var destructors;
      $jqueryElement.addClass(DESTRUCTABLE_CLASS);
      destructors = $jqueryElement.data(DESTRUCTORS_KEY) || [];
      destructors.push(destructor);
      return $jqueryElement.data(DESTRUCTORS_KEY, destructors);
    };

    /**
    Applies all compilers on the given element and its descendants.
    Unlike [`up.hello`](/up.hello), this doesn't emit any events.
    
    @function up.syntax.compile
    @param {Array<Element>} [options.skip]
      A list of elements whose subtrees should not be compiled.
    @internal
     */
    compile = function($fragment, options) {
      var $skipSubtrees;
      options = u.options(options);
      $skipSubtrees = $(options.skip);
      return up.log.group("Compiling fragment %o", $fragment.get(0), function() {
        var $matches, i, len, queue, ref, results;
        ref = [macros, compilers];
        results = [];
        for (i = 0, len = ref.length; i < len; i++) {
          queue = ref[i];
          results.push((function() {
            var j, len1, results1;
            results1 = [];
            for (j = 0, len1 = queue.length; j < len1; j++) {
              compiler = queue[j];
              $matches = u.findWithSelf($fragment, compiler.selector);
              $matches = $matches.filter(function() {
                var $match;
                $match = $(this);
                return u.all($skipSubtrees, function(element) {
                  return $match.closest(element).length === 0;
                });
              });
              if ($matches.length) {
                results1.push(up.log.group((!compiler.isDefault ? "Compiling '%s' on %d element(s)" : void 0), compiler.selector, $matches.length, function() {
                  if (compiler.batch) {
                    return applyCompiler(compiler, $matches, $matches.get());
                  } else {
                    return $matches.each(function() {
                      return applyCompiler(compiler, $(this), this);
                    });
                  }
                }));
              } else {
                results1.push(void 0);
              }
            }
            return results1;
          })());
        }
        return results;
      });
    };

    /**
    Runs any destroyers on the given fragment and its descendants.
    Unlike [`up.destroy`](/up.destroy), this doesn't emit any events
    and does not remove the element from the DOM.
    
    @function up.syntax.clean
    @internal
     */
    clean = function($fragment) {
      return u.findWithSelf($fragment, "." + DESTRUCTABLE_CLASS).each(function() {
        var $element, destructor, destructors, i, len;
        $element = $(this);
        destructors = $element.data(DESTRUCTORS_KEY);
        for (i = 0, len = destructors.length; i < len; i++) {
          destructor = destructors[i];
          destructor();
        }
        $element.removeData(DESTRUCTORS_KEY);
        return $element.removeClass(DESTRUCTABLE_CLASS);
      });
    };

    /**
    Checks if the given element has an [`up-data`](/up-data) attribute.
    If yes, parses the attribute value as JSON and returns the parsed object.
    
    Returns an empty object if the element has no `up-data` attribute.
    
    \#\#\#\# Example
    
    You have an element with JSON data serialized into an `up-data` attribute:
    
        <span class="person" up-data="{ age: 18, name: 'Bob' }">Bob</span>
    
    Calling `up.syntax.data` will deserialize the JSON string into a Javascript object:
    
        up.syntax.data('.person') // returns { age: 18, name: 'Bob' }
    
    @function up.syntax.data
    @param {String|Element|jQuery} elementOrSelector
    @return
      The JSON-decoded value of the `up-data` attribute.
    
      Returns an empty object (`{}`) if the element has no (or an empty) `up-data` attribute.
    @experimental
     */

    /**
    If an element annotated with [`up-data`] is inserted into the DOM,
    Up will parse the JSON and pass the resulting object to any matching
    [`up.compiler`](/up.compiler) handlers.
    
    For instance, a container for a [Google Map](https://developers.google.com/maps/documentation/javascript/tutorial)
    might attach the location and names of its marker pins:
    
        <div class="google-map" up-data="[
          { lat: 48.36, lng: 10.99, title: 'Friedberg' },
          { lat: 48.75, lng: 11.45, title: 'Ingolstadt' }
        ]"></div>
    
    The JSON will parsed and handed to your compiler as a second argument:
    
        up.compiler('.google-map', function($element, pins) {
    
          var map = new google.maps.Map($element);
    
          pins.forEach(function(pin) {
            var position = new google.maps.LatLng(pin.lat, pin.lng);
            new google.maps.Marker({
              position: position,
              map: map,
              title: pin.title
            });
          });
    
        });
    
    Similarly, when an event is triggered on an element annotated with
    [`up-data`], the parsed object will be passed to any matching
    [`up.on`](/up.on) handlers.
    
        up.on('click', '.google-map', function(event, $element, pins) {
          console.log("There are %d pins on the clicked map", pins.length);
        });
    
    @selector [up-data]
    @param {JSON} up-data
      A serialized JSON string
    @stable
     */
    data = function(elementOrSelector) {
      var $element, json;
      $element = $(elementOrSelector);
      json = $element.attr('up-data');
      if (u.isString(json) && u.trim(json) !== '') {
        return JSON.parse(json);
      } else {
        return {};
      }
    };

    /**
    Makes a snapshot of the currently registered event listeners,
    to later be restored through `reset`.
    
    @internal
     */
    snapshot = function() {
      var setDefault;
      setDefault = function(compiler) {
        return compiler.isDefault = true;
      };
      u.each(compilers, setDefault);
      return u.each(macros, setDefault);
    };

    /**
    Resets the list of registered compiler directives to the
    moment when the framework was booted.
    
    @internal
     */
    reset = function() {
      var isDefault;
      isDefault = function(compiler) {
        return compiler.isDefault;
      };
      compilers = u.select(compilers, isDefault);
      return macros = u.select(macros, isDefault);
    };
    up.on('up:framework:booted', snapshot);
    up.on('up:framework:reset', reset);
    return {
      compiler: compiler,
      macro: macro,
      compile: compile,
      clean: clean,
      data: data
    };
  })(jQuery);

  up.compiler = up.syntax.compiler;

  up.macro = up.syntax.macro;

}).call(this);

/**
Browser history
===============
  
\#\#\# Incomplete documentation!
  
We need to work on this page:

- Explain how the other modules manipulate history
- Decide whether we want to expose these methods as public API
- Document methods and parameters

@class up.history
 */

(function() {
  up.history = (function($) {
    var buildState, config, currentUrl, isCurrentUrl, manipulate, nextPreviousUrl, normalizeUrl, observeNewUrl, pop, previousUrl, push, register, replace, reset, restoreStateOnPop, u;
    u = up.util;

    /**
    @property up.history.config
    @param {Array} [config.popTargets=['body']]
      An array of CSS selectors to replace when the user goes
      back in history.
    @param {Boolean} [config.restoreScroll=true]
      Whether to restore the known scroll positions
      when the user goes back or forward in history.
    @stable
     */
    config = u.config({
      popTargets: ['body'],
      restoreScroll: true
    });

    /**
    Returns the previous URL in the browser history.
    
    Note that this will only work reliably for history changes that
    were applied by [`up.history.push`](/up.history.replace) or
    [`up.history.replace`](/up.history.replace).
    
    @function up.history.previousUrl
    @internal
     */
    previousUrl = void 0;
    nextPreviousUrl = void 0;
    reset = function() {
      config.reset();
      previousUrl = void 0;
      return nextPreviousUrl = void 0;
    };
    normalizeUrl = function(url) {
      return u.normalizeUrl(url, {
        hash: true
      });
    };

    /**
    Returns a normalized URL for the current history entry.
    
    @function up.history.url
    @experimental
     */
    currentUrl = function() {
      return normalizeUrl(up.browser.url());
    };
    isCurrentUrl = function(url) {
      return normalizeUrl(url) === currentUrl();
    };
    observeNewUrl = function(url) {
      if (nextPreviousUrl) {
        previousUrl = nextPreviousUrl;
        nextPreviousUrl = void 0;
      }
      return nextPreviousUrl = url;
    };

    /**
    Replaces the current history entry and updates the
    browser's location bar with the given URL.
    
    When the user navigates to the replaced history entry at a later time,
    Unpoly will [`replace`](/up.replace) the document body with
    the body from that URL.
    
    Note that functions like [`up.replace`](/up.replace) or
    [`up.submit`](/up.submit) will automatically update the
    browser's location bar for you.
    
    @function up.history.replace
    @param {String} url
    @experimental
     */
    replace = function(url) {
      return manipulate('replaceState', url);
    };

    /**
    Adds a new history entry and updates the browser's
    address bar with the given URL.
    
    When the user navigates to the added  history entry at a later time,
    Unpoly will [`replace`](/up.replace) the document body with
    the body from that URL.
    
    Note that functions like [`up.replace`](/up.replace) or
    [`up.submit`](/up.submit) will automatically update the
    browser's location bar for you.
    
    Emits events [`up:history:push`](/up:history:push) and [`up:history:pushed`](/up:history:pushed).
    
    @function up.history.push
    @param {String} url
      The URL for the history entry to be added.
    @experimental
     */
    push = function(url, options) {
      options = u.options(options, {
        force: false
      });
      url = normalizeUrl(url);
      if ((options.force || !isCurrentUrl(url)) && up.bus.nobodyPrevents('up:history:push', {
        url: url,
        message: "Adding history entry for " + url
      })) {
        manipulate('pushState', url);
        return up.emit('up:history:pushed', {
          url: url,
          message: "Advanced to location " + url
        });
      }
    };

    /**
    This event is [emitted](/up.emit) before a new history entry is added.
    
    @event up:history:push
    @param {String} event.url
      The URL for the history entry that is going to be added.
    @param event.preventDefault()
      Event listeners may call this method to prevent the history entry from being added.
    @experimental
     */

    /**
    This event is [emitted](/up.emit) after a new history entry has been added.
    
    @event up:history:pushed
    @param {String} event.url
      The URL for the history entry that has been added.
    @experimental
     */
    manipulate = function(method, url) {
      var state;
      if (up.browser.canPushState()) {
        state = buildState();
        window.history[method](state, '', url);
        return observeNewUrl(currentUrl());
      } else {
        return up.fail("This browser doesn't support history." + method);
      }
    };
    buildState = function() {
      return {
        fromUp: true
      };
    };
    restoreStateOnPop = function(state) {
      var url;
      if (state != null ? state.fromUp : void 0) {
        url = currentUrl();
        return up.log.group("Restoring URL %s", url, function() {
          var popSelector;
          popSelector = config.popTargets.join(', ');
          return up.replace(popSelector, url, {
            history: false,
            title: true,
            reveal: false,
            transition: 'none',
            saveScroll: false,
            restoreScroll: config.restoreScroll
          });
        });
      } else {
        return up.puts('Ignoring a state not pushed by Unpoly (%o)', state);
      }
    };
    pop = function(event) {
      var state, url;
      observeNewUrl(currentUrl());
      up.layout.saveScroll({
        url: previousUrl
      });
      state = event.originalEvent.state;
      restoreStateOnPop(state);
      url = currentUrl();
      return up.emit('up:history:restored', {
        url: url,
        message: "Restored location " + url
      });
    };

    /**
    This event is [emitted](/up.emit) after a history entry has been restored.
    
    History entries are restored when the user uses the *Back* or *Forward* button.
    
    @event up:history:restored
    @param {String} event.url
      The URL for the history entry that has been restored.
    @experimental
     */
    if (up.browser.canPushState()) {
      register = function() {
        $(window).on("popstate", pop);
        return replace(currentUrl(), {
          force: true
        });
      };
      if (typeof jasmine !== "undefined" && jasmine !== null) {
        register();
      } else {
        setTimeout(register, 100);
      }
    }

    /**
    Changes the link's destination so it points to the previous URL.
    
    Note that this will *not* call `location.back()`, but will set
    the link's `up-href` attribute to the actual, previous URL.
    
    \#\#\#\# Under the hood
    
    This link ...
    
        <a href="/default" up-back>
          Go back
        </a>
    
    ... will be transformed to:
    
        <a href="/default" up-href="/previous-page" up-restore-scroll up-follow>
          Goback
        </a>
    
    @selector [up-back]
    @stable
     */
    up.compiler('[up-back]', function($link) {
      if (u.isPresent(previousUrl)) {
        u.setMissingAttrs($link, {
          'up-href': previousUrl,
          'up-restore-scroll': ''
        });
        $link.removeAttr('up-back');
        return up.link.makeFollowable($link);
      }
    });
    up.on('up:framework:reset', reset);
    return {
      config: config,
      defaults: function() {
        return up.fail('up.history.defaults(...) no longer exists. Set values on he up.history.config property instead.');
      },
      push: push,
      replace: replace,
      url: currentUrl,
      previousUrl: function() {
        return previousUrl;
      },
      normalizeUrl: normalizeUrl
    };
  })(jQuery);

}).call(this);

/**
Application layout
==================

You can [make Unpoly aware](/up.layout.config) of fixed elements in your
layout, such as navigation bars or headers. Unpoly will respect these sticky
elements when [revealing elements](/up.reveal) or [opening a modal dialog](/up-modal).

This modules also contains functions to programmatically [scroll a viewport](/up.scroll)
or [reveal an element within its viewport](/up.reveal).

Bootstrap integration
---------------------

When using Bootstrap integration (`unpoly-bootstrap3.js` and `unpoly-bootstrap3.css`)
Unpoly will automatically be aware of sticky Bootstrap components such as
[fixed navbar](https://getbootstrap.com/examples/navbar-fixed-top/).

@class up.layout
 */

(function() {
  var slice = [].slice;

  up.layout = (function($) {
    var SCROLL_PROMISE_KEY, anchoredRight, config, finishScrolling, fixedChildren, lastScrollTops, measureObstruction, reset, restoreScroll, reveal, revealOrRestoreScroll, saveScroll, scroll, scrollTops, u, viewportOf, viewportSelector, viewports, viewportsWithin;
    u = up.util;

    /**
    Configures the application layout.
    
    @property up.layout.config
    @param {Array} [config.viewports]
      An array of CSS selectors that find viewports
      (containers that scroll their contents).
    @param {Array} [config.fixedTop]
      An array of CSS selectors that find elements fixed to the
      top edge of the screen (using `position: fixed`).
    @param {Array} [config.fixedBottom]
      An array of CSS selectors that find elements fixed to the
      bottom edge of the screen (using `position: fixed`).
    @param {Array} [config.anchoredRight]
      An array of CSS selectors that find elements anchored to the
      right edge of the screen (using `position: fixed` or `position: absolute`).
    @param {Number} [config.duration=0]
      The duration of the scrolling animation in milliseconds.
      Setting this to `0` will disable scrolling animations.
    @param {String} [config.easing='swing']
      The timing function that controls the animation's acceleration.
      See [W3C documentation](http://www.w3.org/TR/css3-transitions/#transition-timing-function)
      for a list of pre-defined timing functions.
    @param {Number} [config.snap=50]
      When [revealing](/up.reveal) elements, Unpoly will scroll an viewport
      to the top when the revealed element is closer to the top than `config.snap`.
    @param {Number} [config.substance=150]
      A number indicating how many top pixel rows of an element to [reveal](/up.reveal).
    @stable
     */
    config = u.config({
      duration: 0,
      viewports: [document, '.up-modal-viewport', '[up-viewport]'],
      fixedTop: ['[up-fixed~=top]'],
      fixedBottom: ['[up-fixed~=bottom]'],
      anchoredRight: ['[up-anchored~=right]', '[up-fixed~=top]', '[up-fixed~=bottom]', '[up-fixed~=right]'],
      snap: 50,
      substance: 150,
      easing: 'swing'
    });
    lastScrollTops = u.cache({
      size: 30,
      key: up.history.normalizeUrl
    });
    reset = function() {
      config.reset();
      return lastScrollTops.clear();
    };
    SCROLL_PROMISE_KEY = 'up-scroll-promise';

    /**
    Scrolls the given viewport to the given Y-position.
    
    A "viewport" is an element that has scrollbars, e.g. `<body>` or
    a container with `overflow-x: scroll`.
    
    \#\#\#\# Example
    
    This will scroll a `<div class="main">...</div>` to a Y-position of 100 pixels:
    
        up.scroll('.main', 100);
    
    \#\#\#\# Animating the scrolling motion
    
    The scrolling can (optionally) be animated.
    
        up.scroll('.main', 100, {
          easing: 'swing',
          duration: 250
        });
    
    If the given viewport is already in a scroll animation when `up.scroll`
    is called a second time, the previous animation will instantly jump to the
    last frame before the next animation is started.
    
    @function up.scroll
    @param {String|Element|jQuery} viewport
      The container element to scroll.
    @param {Number} scrollPos
      The absolute number of pixels to set the scroll position to.
    @param {Number}[options.duration]
      The number of miliseconds for the scrolling's animation.
    @param {String}[options.easing]
      The timing function that controls the acceleration for the scrolling's animation.
    @return {Deferred}
      A promise that will be resolved when the scrolling ends.
    @experimental
     */
    scroll = function(viewport, scrollTop, options) {
      var $viewport, deferred, duration, easing, targetProps;
      $viewport = $(viewport);
      options = u.options(options);
      duration = u.option(options.duration, config.duration);
      easing = u.option(options.easing, config.easing);
      finishScrolling($viewport);
      if (duration > 0) {
        deferred = $.Deferred();
        $viewport.data(SCROLL_PROMISE_KEY, deferred);
        deferred.then(function() {
          $viewport.removeData(SCROLL_PROMISE_KEY);
          return $viewport.finish();
        });
        targetProps = {
          scrollTop: scrollTop
        };
        if ($viewport.get(0) === document) {
          $viewport = $('html, body');
        }
        $viewport.animate(targetProps, {
          duration: duration,
          easing: easing,
          complete: function() {
            return deferred.resolve();
          }
        });
        return deferred;
      } else {
        $viewport.scrollTop(scrollTop);
        return u.resolvedDeferred();
      }
    };

    /**
    @function up.layout.finishScrolling
    @param {String|Element|jQuery}
      The element that might currently be scrolling.
    @internal
     */
    finishScrolling = function(elementOrSelector) {
      return $(elementOrSelector).each(function() {
        var existingScrolling;
        if (existingScrolling = $(this).data(SCROLL_PROMISE_KEY)) {
          return existingScrolling.resolve();
        }
      });
    };

    /**
    @function up.layout.anchoredRight
    @internal
     */
    anchoredRight = function() {
      return u.multiSelector(config.anchoredRight).select();
    };
    measureObstruction = function() {
      var fixedBottomTops, fixedTopBottoms, measurePosition, obstructor;
      measurePosition = function(obstructor, cssAttr) {
        var $obstructor, anchorPosition;
        $obstructor = $(obstructor);
        anchorPosition = $obstructor.css(cssAttr);
        if (!u.isPresent(anchorPosition)) {
          up.fail("Fixed element %o must have a CSS attribute %s", $obstructor.get(0), cssAttr);
        }
        return parseInt(anchorPosition) + $obstructor.height();
      };
      fixedTopBottoms = (function() {
        var i, len, ref, results;
        ref = $(config.fixedTop.join(', '));
        results = [];
        for (i = 0, len = ref.length; i < len; i++) {
          obstructor = ref[i];
          results.push(measurePosition(obstructor, 'top'));
        }
        return results;
      })();
      fixedBottomTops = (function() {
        var i, len, ref, results;
        ref = $(config.fixedBottom.join(', '));
        results = [];
        for (i = 0, len = ref.length; i < len; i++) {
          obstructor = ref[i];
          results.push(measurePosition(obstructor, 'bottom'));
        }
        return results;
      })();
      return {
        top: Math.max.apply(Math, [0].concat(slice.call(fixedTopBottoms))),
        bottom: Math.max.apply(Math, [0].concat(slice.call(fixedBottomTops)))
      };
    };

    /**
    Scroll's the given element's viewport so the first rows of the
    element are visible for the user.
    
    By default Unpoly will always reveal an element before
    updating it with Javascript functions like [`up.replace`](/up.replace)
    or UJS behavior like [`[up-target]`](/up-target).
    
    \#\#\#\# How Unpoly finds the viewport
    
    The viewport (the container that is going to be scrolled)
    is the closest parent of the element that is either:
    
    - the currently open [modal](/up.modal)
    - an element with the attribute `[up-viewport]`
    - the `<body>` element
    - an element matching the selector you have configured using `up.layout.config.viewports.push('my-custom-selector')`
    
    \#\#\#\# Fixed elements obstruction the viewport
    
    Many applications have a navigation bar fixed to the top or bottom,
    obstructing the view on an element.
    
    You can make `up.reveal` aware of these fixed elements
    so it can scroll the viewport far enough so the revealed element is fully visible.
    To make `up.reveal` aware fixed elements you can either:
    
    - give the element an attribute [`up-fixed="top"`](/up-fixed-top) or [`up-fixed="bottom"`](up-fixed-bottom)
    - [configure default options](/up.layout.config) for `fixedTop` or `fixedBottom`
    
    @function up.reveal
    @param {String|Element|jQuery} element
    @param {Number} [options.duration]
    @param {String} [options.easing]
    @param {String} [options.snap]
    @param {String|Element|jQuery} [options.viewport]
    @param {Boolean} [options.top=false]
      Whether to scroll the viewport so that the first element row aligns
      with the top edge of the viewport.
    @return {Deferred}
      A promise that will be resolved when the element is revealed.
    @stable
     */
    reveal = function(elementOrSelector, options) {
      var $element, $viewport, elementDims, firstElementRow, lastElementRow, newScrollPos, obstruction, offsetShift, originalScrollPos, predictFirstVisibleRow, predictLastVisibleRow, snap, viewportHeight, viewportIsDocument;
      $element = $(elementOrSelector);
      up.puts('Revealing fragment %o', elementOrSelector.get(0));
      options = u.options(options);
      $viewport = options.viewport ? $(options.viewport) : viewportOf($element);
      snap = u.option(options.snap, config.snap);
      viewportIsDocument = $viewport.is(document);
      viewportHeight = viewportIsDocument ? u.clientSize().height : $viewport.height();
      originalScrollPos = $viewport.scrollTop();
      newScrollPos = originalScrollPos;
      offsetShift = void 0;
      obstruction = void 0;
      if (viewportIsDocument) {
        obstruction = measureObstruction();
        offsetShift = 0;
      } else {
        obstruction = {
          top: 0,
          bottom: 0
        };
        offsetShift = originalScrollPos;
      }
      predictFirstVisibleRow = function() {
        return newScrollPos + obstruction.top;
      };
      predictLastVisibleRow = function() {
        return newScrollPos + viewportHeight - obstruction.bottom - 1;
      };
      elementDims = u.measure($element, {
        relative: $viewport
      });
      firstElementRow = elementDims.top + offsetShift;
      lastElementRow = firstElementRow + Math.min(elementDims.height, config.substance) - 1;
      if (lastElementRow > predictLastVisibleRow()) {
        newScrollPos += lastElementRow - predictLastVisibleRow();
      }
      if (firstElementRow < predictFirstVisibleRow() || options.top) {
        newScrollPos = firstElementRow - obstruction.top;
      }
      if (newScrollPos < snap) {
        newScrollPos = 0;
      }
      if (newScrollPos !== originalScrollPos) {
        return scroll($viewport, newScrollPos, options);
      } else {
        return u.resolvedDeferred();
      }
    };
    viewportSelector = function() {
      return u.multiSelector(config.viewports);
    };

    /**
    Returns the viewport for the given element.
    
    Throws an error if no viewport could be found.
    
    @function up.layout.viewportOf
    @param {String|Element|jQuery} selectorOrElement
    @internal
     */
    viewportOf = function(selectorOrElement, options) {
      var $element, $viewport;
      if (options == null) {
        options = {};
      }
      $element = $(selectorOrElement);
      $viewport = viewportSelector().seekUp($element);
      if ($viewport.length === 0 && options.strict !== false) {
        up.fail("Could not find viewport for %o", $element);
      }
      return $viewport;
    };

    /**
    Returns a jQuery collection of all the viewports contained within the
    given selector or element.
    
    @function up.layout.viewportsWithin
    @param {String|Element|jQuery} selectorOrElement
    @return jQuery
    @internal
     */
    viewportsWithin = function(selectorOrElement) {
      var $element;
      $element = $(selectorOrElement);
      return viewportSelector().findWithSelf($element);
    };

    /**
    Returns a jQuery collection of all the viewports on the screen.
    
    @function up.layout.viewports
    @internal
     */
    viewports = function() {
      return viewportSelector().select();
    };

    /**
    Returns a hash with scroll positions.
    
    Each key in the hash is a viewport selector. The corresponding
    value is the viewport's top scroll position:
    
        up.layout.scrollTops()
        => { '.main': 0, '.sidebar': 73 }
    
    @function up.layout.scrollTops
    @return Object<String, Number>
    @internal
     */
    scrollTops = function() {
      var $viewport, i, key, len, ref, topsBySelector, viewport;
      topsBySelector = {};
      ref = config.viewports;
      for (i = 0, len = ref.length; i < len; i++) {
        viewport = ref[i];
        $viewport = $(viewport);
        if ($viewport.length) {
          key = viewport;
          if (viewport === document) {
            key = 'document';
          }
          topsBySelector[key] = $viewport.scrollTop();
        }
      }
      return topsBySelector;
    };

    /**
    @function up.layout.fixedChildren
    @internal
     */
    fixedChildren = function(root) {
      var $elements, $root;
      if (root == null) {
        root = void 0;
      }
      root || (root = document.body);
      $root = $(root);
      $elements = $root.find('[up-fixed]');
      if (u.isPresent(config.fixedTop)) {
        $elements = $elements.add($root.find(config.fixedTop.join(', ')));
      }
      if (u.isPresent(config.fixedBottom)) {
        $elements = $elements.add($root.find(config.fixedBottom.join(', ')));
      }
      return $elements;
    };

    /**
    Saves the top scroll positions of all the
    viewports configured in [`up.layout.config.viewports`](/up.layout.config).
    
    The scroll positions will be associated with the current URL.
    They can later be restored by calling [`up.layout.restoreScroll()`](/up.layout.restoreScroll)
    at the same URL.
    
    Unpoly automatically saves scroll positions whenever a fragment was updated on the page.
    
    @function up.layout.saveScroll
    @param {String} [options.url]
    @param {Object<String, Number>} [options.tops]
    @experimental
     */
    saveScroll = function(options) {
      var tops, url;
      if (options == null) {
        options = {};
      }
      url = u.option(options.url, up.history.url());
      tops = u.option(options.tops, scrollTops());
      up.puts('Saving scroll positions for URL %s (%o)', url, tops);
      return lastScrollTops.set(url, tops);
    };

    /**
    Restores [previously saved](/up.layout.saveScroll) scroll positions of viewports
    viewports configured in [`up.layout.config.viewports`](/up.layout.config).
    
    Unpoly automatically restores scroll positions when the user presses the back button.
    You can disable this behavior by setting [`up.history.config.restoreScroll = false`](/up.history.config).
    
    @function up.layout.restoreScroll
    @param {jQuery} [options.around]
      If set, only restores viewports that are either an ancestor
      or descendant of the given element.
    @experimental
     */
    restoreScroll = function(options) {
      var $ancestorViewports, $descendantViewports, $viewports, tops, url;
      if (options == null) {
        options = {};
      }
      url = up.history.url();
      $viewports = void 0;
      if (options.around) {
        $descendantViewports = viewportsWithin(options.around);
        $ancestorViewports = viewportOf(options.around);
        $viewports = $ancestorViewports.add($descendantViewports);
      } else {
        $viewports = viewports();
      }
      tops = lastScrollTops.get(url);
      return up.log.group('Restoring scroll positions for URL %s to %o', url, tops, function() {
        var $matchingViewport, key, right, scrollTop;
        for (key in tops) {
          scrollTop = tops[key];
          right = key === 'document' ? document : key;
          $matchingViewport = $viewports.filter(right);
          scroll($matchingViewport, scrollTop, {
            duration: 0
          });
        }
        return u.resolvedDeferred();
      });
    };

    /**
    @function up.layout.revealOrRestoreScroll
    @return {Deferred}
      A promise for when the revealing or scroll restauration ends
    @internal
     */
    revealOrRestoreScroll = function(selectorOrElement, options) {
      var $element, $target, id, parsed;
      $element = $(selectorOrElement);
      if (options.restoreScroll) {
        return restoreScroll({
          around: $element
        });
      } else if (options.reveal) {
        if (options.source) {
          parsed = u.parseUrl(options.source);
          if (parsed.hash && parsed.hash !== '#') {
            id = parsed.hash.substr(1);
            $target = u.findWithSelf($element, "#" + id + ", a[name='" + id + "']");
            if ($target.length) {
              $element = $target;
            }
          }
        }
        return reveal($element);
      } else {
        return u.resolvedDeferred();
      }
    };

    /**
    Marks this element as a scrolling container ("viewport").
    
    Apply this attribute if your app uses a custom panel layout with fixed positioning
    instead of scrolling `<body>`. As an alternative you can also push a selector
    matching your custom viewport to the [`up.layout.config.viewports`](/up.layout.config) array.
    
    [`up.reveal`](/up.reveal) will always try to scroll the viewport closest
    to the element that is being revealed. By default this is the `<body>` element.
    
    \#\#\#\# Example
    
    Here is an example for a layout for an e-mail client, showing a list of e-mails
    on the left side and the e-mail text on the right side:
    
        .side {
          position: fixed;
          top: 0;
          bottom: 0;
          left: 0;
          width: 100px;
          overflow-y: scroll;
        }
    
        .main {
          position: fixed;
          top: 0;
          bottom: 0;
          left: 100px;
          right: 0;
          overflow-y: scroll;
        }
    
    This would be the HTML (notice the `up-viewport` attribute):
    
        <div class=".side" up-viewport>
          <a href="/emails/5001" up-target=".main">Re: Your invoice</a>
          <a href="/emails/2023" up-target=".main">Quote for services</a>
          <a href="/emails/9002" up-target=".main">Fwd: Room reservation</a>
        </div>
    
        <div class="main" up-viewport>
          <h1>Re: Your Invoice</h1>
          <p>
            Lorem ipsum dolor sit amet, consetetur sadipscing elitr.
            Stet clita kasd gubergren, no sea takimata sanctus est.
          </p>
        </div>
    
    @selector [up-viewport]
    @stable
     */

    /**
    Marks this element as a navigation fixed to the top edge of the screen
    using `position: fixed`.
    
    [`up.reveal`](/up.reveal) is aware of fixed elements and will scroll
    the viewport far enough so the revealed element is fully visible.
    
    \#\#\#\# Example
    
        <div class="top-nav" up-fixed="top">...</div>
    
    @selector [up-fixed=top]
    @stable
     */

    /**
    Marks this element as a navigation fixed to the bottom edge of the screen
    using `position: fixed`.
    
    [`up.reveal`](/up.reveal) is aware of fixed elements and will scroll
    the viewport far enough so the revealed element is fully visible.
    
    \#\#\#\# Example
    
        <div class="bottom-nav" up-fixed="bottom">...</div>
    
    @selector [up-fixed=bottom]
    @stable
     */

    /**
    Marks this element as a navigation anchored to the right edge of the screen
    using `position: fixed` or `position:absolute`.
    
    [`up.modal`](/up.modal) will move anchored elements to the left so they
    don't appear to move when a modal dialog is opened or closed.
    
    \#\#\#\# Example
    
        <div class="bottom-nav" up-fixed="bottom">...</div>
    
    @selector [up-anchored=right]
    @stable
     */
    up.on('up:framework:reset', reset);
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      reveal: reveal,
      scroll: scroll,
      finishScrolling: finishScrolling,
      config: config,
      defaults: function() {
        return up.fail('up.layout.defaults(...) no longer exists. Set values on he up.layout.config property instead.');
      },
      viewportOf: viewportOf,
      viewportsWithin: viewportsWithin,
      viewports: viewports,
      scrollTops: scrollTops,
      saveScroll: saveScroll,
      restoreScroll: restoreScroll,
      revealOrRestoreScroll: revealOrRestoreScroll,
      anchoredRight: anchoredRight,
      fixedChildren: fixedChildren
    };
  })(jQuery);

  up.scroll = up.layout.scroll;

  up.reveal = up.layout.reveal;

}).call(this);

/**
Changing page fragments programmatically
========================================
  
This module contains Unpoly's core functions to [change](/up.replace) or
[destroy](/up.destroy) page fragments via Javascript.

All the other Unpoly modules (like [`up.link`](/up.link) or [`up.modal`](/up.modal))
are based on this module.
  
@class up.flow
 */

(function() {
  up.flow = (function($) {
    var autofocus, config, destroy, emitFragmentInserted, emitFragmentKept, extract, filterScripts, findKeepPlan, findOldFragment, first, firstInLayer, firstInPriority, hello, isRealElement, layerOf, matchesLayer, oldFragmentNotFound, parseImplantSteps, parseResponse, processResponse, reload, replace, reset, resolveSelector, setSource, shouldExtractTitle, source, swapElements, transferKeepableElements, u, updateHistory;
    u = up.util;

    /**
    Configures defaults for fragment insertion.
    
    @property up.flow.config
    @param {Boolean} [options.runInlineScripts=true]
      Whether inline `<script>` tags inside inserted HTML fragments will be executed.
    @param {Boolean} [options.runLinkedScripts=false]
      Whether `<script src='...'>` tags inside inserted HTML fragments will fetch and execute
      the linked Javascript file.
    @stable
     */
    config = u.config({
      runInlineScripts: true,
      runLinkedScripts: false
    });
    reset = function() {
      return config.reset();
    };
    setSource = function(element, sourceUrl) {
      var $element;
      $element = $(element);
      if (u.isPresent(sourceUrl)) {
        sourceUrl = u.normalizeUrl(sourceUrl);
      }
      return $element.attr("up-source", sourceUrl);
    };

    /**
    Returns the URL the given element was retrieved from.
    
    @method up.flow.source
    @param {String|Element|jQuery} selectorOrElement
    @experimental
     */
    source = function(selectorOrElement) {
      var $element;
      $element = $(selectorOrElement).closest('[up-source]');
      return u.presence($element.attr("up-source")) || up.browser.url();
    };

    /**
    Resolves the given selector (which might contain `&` references)
    to an absolute selector.
    
    @function up.flow.resolveSelector
    @param {String|Element|jQuery} selectorOrElement
    @param {String|Element|jQuery} origin
      The element that this selector resolution is relative to.
      That element's selector will be substituted for `&`.
    @internal
     */
    resolveSelector = function(selectorOrElement, origin) {
      var originSelector, selector;
      if (u.isString(selectorOrElement)) {
        selector = selectorOrElement;
        if (u.contains(selector, '&')) {
          if (origin) {
            originSelector = u.selectorForElement(origin);
            selector = selector.replace(/\&/, originSelector);
          } else {
            up.fail("Found origin reference (%s) in selector %s, but options.origin is missing", '&', selector);
          }
        }
      } else {
        selector = u.selectorForElement(selectorOrElement);
      }
      return selector;
    };

    /**
    Replaces elements on the current page with corresponding elements
    from a new page fetched from the server.
    
    The current and new elements must both match the given CSS selector.
    
    The UJS variant of this is the [`a[up-target]`](/a-up-target) selector.
    
    \#\#\#\# Example
    
    Let's say your curent HTML looks like this:
    
        <div class="one">old one</div>
        <div class="two">old two</div>
    
    We now replace the second `<div>`:
    
        up.replace('.two', '/new');
    
    The server renders a response for `/new`:
    
        <div class="one">new one</div>
        <div class="two">new two</div>
    
    Unpoly looks for the selector `.two` in the response and [implants](/up.extract) it into
    the current page. The current page now looks like this:
    
        <div class="one">old one</div>
        <div class="two">new two</div>
    
    Note how only `.two` has changed. The update for `.one` was
    discarded, since it didn't match the selector.
    
    \#\#\#\# Appending or prepending instead of replacing
    
    By default Unpoly will replace the given selector with the same
    selector from a freshly fetched page. Instead of replacing you
    can *append* the loaded content to the existing content by using the
    `:after` pseudo selector. In the same fashion, you can use `:before`
    to indicate that you would like the *prepend* the loaded content.
    
    A practical example would be a paginated list of items:
    
        <ul class="tasks">
          <li>Wash car</li>
          <li>Purchase supplies</li>
          <li>Fix tent</li>
        </ul>
    
    In order to append more items from a URL, replace into
    the `.tasks:after` selector:
    
        up.replace('.tasks:after', '/page/2')
    
    \#\#\#\# Setting the window title from the server
    
    If the `replace` call changes history, the document title will be set
    to the contents of a `<title>` tag in the response.
    
    The server can also change the document title by setting
    an `X-Up-Title` header in the response.
    
    \#\#\#\# Optimizing response rendering
    
    The server is free to optimize Unpoly requests by only rendering the HTML fragment
    that is being updated. The request's `X-Up-Target` header will contain
    the CSS selector for the updating fragment.
    
    If you are using the `unpoly-rails` gem you can also access the selector via
    `up.target` in all controllers, views and helpers.
    
    \#\#\#\# Events
    
    Unpoly will emit [`up:fragment:destroyed`](/up:fragment:destroyed) on the element
    that was replaced and [`up:fragment:inserted`](/up:fragment:inserted) on the new
    element that replaces it.
    
    @function up.replace
    @param {String|Element|jQuery} selectorOrElement
      The CSS selector to update. You can also pass a DOM element or jQuery element
      here, in which case a selector will be inferred from the element's class and ID.
    @param {String} url
      The URL to fetch from the server.
    @param {String} [options.failTarget='body']
      The CSS selector to update if the server sends a non-200 status code.
    @param {String} [options.title]
      The document title after the replacement.
    
      If the call pushes an history entry and this option is missing, the title is extracted from the response's `<title>` tag.
      You can also pass `false` to explicitly prevent the title from being updated.
    @param {String} [options.method='get']
      The HTTP method to use for the request.
    @param {Object|Array} [options.data]
      Parameters that should be sent as the request's payload.
    
      Parameters can either be passed as an object (where the property names become
      the param names and the property values become the param values) or as
      an array of `{ name: 'param-name', value: 'param-value' }` objects
      (compare to jQuery's [`serializeArray`](https://api.jquery.com/serializeArray/)).
    @param {String} [options.transition='none']
    @param {String|Boolean} [options.history=true]
      If a `String` is given, it is used as the URL the browser's location bar and history.
      If omitted or true, the `url` argument will be used.
      If set to `false`, the history will remain unchanged.
    @param {String|Boolean} [options.source=true]
    @param {String} [options.reveal=false]
      Whether to [reveal](/up.reveal) the element being updated, by
      scrolling its containing viewport.
    @param {Boolean} [options.restoreScroll=false]
      If set to true, Unpoly will try to restore the scroll position
      of all the viewports around or below the updated element. The position
      will be reset to the last known top position before a previous
      history change for the current URL.
    @param {Boolean} [options.cache]
      Whether to use a [cached response](/up.proxy) if available.
    @param {String} [options.historyMethod='push']
    @param {Object} [options.headers={}]
      An object of additional header key/value pairs to send along
      with the request.
    @param {Boolean} [options.requireMatch=true]
      Whether to raise an error if the given selector is missing in
      either the current page or in the response.
    @param {Element|jQuery} [options.origin]
      The element that triggered the replacement.
    
      The element's selector will be substituted for the `&` shorthand in the target selector.
    @param {String} [options.layer='auto']
      The name of the layer that ought to be updated. Valid values are
      `auto`, `page`, `modal` and `popup`.
    
      If set to `auto` (default), Unpoly will try to find a match in the
      same layer as the element that triggered the replacement (see `options.origin`).
      If that element is not known, or no match was found in that layer,
      Unpoly will search in other layers, starting from the topmost layer.
    @return {Promise}
      A promise that will be resolved when the page has been updated.
    @stable
     */
    replace = function(selectorOrElement, url, options) {
      var failTarget, onFailure, onSuccess, promise, request, target;
      up.puts("Replacing %s from %s (%o)", selectorOrElement, url, options);
      options = u.options(options);
      target = resolveSelector(selectorOrElement, options.origin);
      failTarget = u.option(options.failTarget, 'body');
      failTarget = resolveSelector(failTarget, options.origin);
      if (!up.browser.canPushState() && options.history !== false) {
        if (!options.preload) {
          up.browser.loadPage(url, u.only(options, 'method', 'data'));
        }
        return u.unresolvablePromise();
      }
      request = {
        url: url,
        method: options.method,
        data: options.data,
        target: target,
        failTarget: failTarget,
        cache: options.cache,
        preload: options.preload,
        headers: options.headers
      };
      options.inspectResponse = function() {
        return up.browser.loadPage(url, u.only(options, 'method', 'data'));
      };
      promise = up.ajax(request);
      onSuccess = function(html, textStatus, xhr) {
        return processResponse(true, target, url, request, xhr, options);
      };
      onFailure = function(xhr, textStatus, errorThrown) {
        return processResponse(false, failTarget, url, request, xhr, options);
      };
      promise = promise.then(onSuccess, onFailure);
      return promise;
    };

    /**
    @internal
     */
    processResponse = function(isSuccess, selector, url, request, xhr, options) {
      var isReloadable, newRequest, query, urlFromServer;
      options.method = u.normalizeMethod(u.option(u.methodFromXhr(xhr), options.method));
      isReloadable = options.method === 'GET';
      if (urlFromServer = u.locationFromXhr(xhr)) {
        url = urlFromServer;
        if (isSuccess && up.proxy.isCachable(request)) {
          newRequest = {
            url: url,
            method: u.methodFromXhr(xhr),
            target: selector
          };
          up.proxy.alias(request, newRequest);
        }
      } else if (isReloadable) {
        if (query = u.requestDataAsQuery(options.data)) {
          url = url + "?" + query;
        }
      }
      if (isSuccess) {
        if (isReloadable) {
          if (!(options.history === false || u.isString(options.history))) {
            options.history = url;
          }
          if (!(options.source === false || u.isString(options.source))) {
            options.source = url;
          }
        } else {
          if (!u.isString(options.history)) {
            options.history = false;
          }
          if (!u.isString(options.source)) {
            options.source = 'keep';
          }
        }
      } else {
        options.transition = options.failTransition;
        options.failTransition = void 0;
        if (isReloadable) {
          if (options.history !== false) {
            options.history = url;
          }
          if (options.source !== false) {
            options.source = url;
          }
        } else {
          options.source = 'keep';
          options.history = false;
        }
      }
      if (shouldExtractTitle(options)) {
        options.title = u.titleFromXhr(xhr);
      }
      if (options.preload) {
        return u.resolvedPromise();
      } else {
        return extract(selector, xhr.responseText, options);
      }
    };
    shouldExtractTitle = function(options) {
      return !(options.title === false || u.isString(options.title) || (options.history === false && options.title !== true));
    };

    /**
    Updates a selector on the current page with the
    same selector from the given HTML string.
    
    \#\#\#\# Example
    
    Let's say your curent HTML looks like this:
    
        <div class="one">old one</div>
        <div class="two">old two</div>
    
    We now replace the second `<div>`, using an HTML string
    as the source:
    
        html = '<div class="one">new one</div>' +
               '<div class="two">new two</div>';
    
        up.extract('.two', html);
    
    Unpoly looks for the selector `.two` in the strings and updates its
    contents in the current page. The current page now looks like this:
    
        <div class="one">old one</div>
        <div class="two">new two</div>
    
    Note how only `.two` has changed. The update for `.one` was
    discarded, since it didn't match the selector.
    
    @function up.extract
    @param {String|Element|jQuery} selectorOrElement
    @param {String} html
    @param {Object} [options]
      See options for [`up.replace`](/up.replace).
    @return {Promise}
      A promise that will be resolved then the selector was updated
      and all animation has finished.
    @experimental
     */
    extract = function(selectorOrElement, html, options) {
      return up.log.group('Extracting %s from %d bytes of HTML', selectorOrElement, html != null ? html.length : void 0, function() {
        var promise, response, selector;
        options = u.options(options, {
          historyMethod: 'push',
          requireMatch: true,
          keep: true,
          layer: 'auto'
        });
        selector = resolveSelector(selectorOrElement, options.origin);
        response = parseResponse(html, options);
        if (shouldExtractTitle(options)) {
          options.title = response.title();
        }
        if (options.saveScroll !== false) {
          up.layout.saveScroll();
        }
        promise = u.resolvedPromise();
        if (options.beforeSwap) {
          promise = promise.then(options.beforeSwap);
        }
        promise = promise.then(function() {
          return updateHistory(options);
        });
        promise = promise.then(function() {
          var j, len, ref, step, swapPromises;
          swapPromises = [];
          ref = parseImplantSteps(selector, options);
          for (j = 0, len = ref.length; j < len; j++) {
            step = ref[j];
            up.log.group('Updating %s', step.selector, function() {
              var $new, $old, swapPromise;
              $old = findOldFragment(step.selector, options);
              $new = response.first(step.selector);
              if ($old && $new) {
                filterScripts($new, options);
                swapPromise = swapElements($old, $new, step.pseudoClass, step.transition, options);
                swapPromises.push(swapPromise);
                return options.reveal = false;
              }
            });
          }
          return $.when.apply($, swapPromises);
        });
        if (options.afterSwap) {
          promise = promise.then(options.afterSwap);
        }
        return promise;
      });
    };
    findOldFragment = function(selector, options) {
      return first(selector, options) || oldFragmentNotFound(selector, options);
    };
    oldFragmentNotFound = function(selector, options) {
      var layerProse, message;
      if (options.requireMatch) {
        layerProse = options.layer;
        if (layerProse === 'auto') {
          layerProse = 'page, modal or popup';
        }
        message = "Could not find selector %s in the current " + layerProse;
        if (message[0] === '#') {
          message += ' (avoid using IDs)';
        }
        return up.fail(message, selector);
      }
    };
    filterScripts = function($element, options) {
      var $script, $scripts, isInline, isLinked, j, len, results, runInlineScripts, runLinkedScripts, script;
      runInlineScripts = u.option(options.runInlineScripts, config.runInlineScripts);
      runLinkedScripts = u.option(options.runLinkedScripts, config.runLinkedScripts);
      $scripts = u.findWithSelf($element, 'script');
      results = [];
      for (j = 0, len = $scripts.length; j < len; j++) {
        script = $scripts[j];
        $script = $(script);
        isLinked = u.isPresent($script.attr('src'));
        isInline = !isLinked;
        if (!((isLinked && runLinkedScripts) || (isInline && runInlineScripts))) {
          results.push($script.remove());
        } else {
          results.push(void 0);
        }
      }
      return results;
    };
    parseResponse = function(html, options) {
      var htmlElement;
      htmlElement = u.createElementFromHtml(html);
      return {
        title: function() {
          var ref;
          return (ref = htmlElement.querySelector("title")) != null ? ref.textContent : void 0;
        },
        first: function(selector) {
          var child, inspectAction;
          if (child = $.find(selector, htmlElement)[0]) {
            return $(child);
          } else if (options.requireMatch) {
            inspectAction = {
              label: 'Open response',
              callback: options.inspectResponse
            };
            return up.fail(["Could not find selector %s in response %o", selector, html], {
              action: inspectAction
            });
          }
        }
      };
    };
    updateHistory = function(options) {
      options = u.options(options, {
        historyMethod: 'push'
      });
      if (options.history) {
        up.history[options.historyMethod](options.history);
      }
      if (options.title) {
        return document.title = options.title;
      }
    };
    swapElements = function($old, $new, pseudoClass, transition, options) {
      var $wrapper, keepPlan, promise, replacement;
      transition || (transition = 'none');
      if (options.source === 'keep') {
        options = u.merge(options, {
          source: source($old)
        });
      }
      up.motion.finish($old);
      if (pseudoClass) {
        $wrapper = $new.contents().wrapAll('<div class="up-insertion"></div>').parent();
        if (pseudoClass === 'before') {
          $old.prepend($wrapper);
        } else {
          $old.append($wrapper);
        }
        hello($wrapper.children(), options);
        promise = up.layout.revealOrRestoreScroll($wrapper, options);
        promise = promise.then(function() {
          return up.animate($wrapper, transition, options);
        });
        promise = promise.then(function() {
          return u.unwrapElement($wrapper);
        });
      } else if (keepPlan = findKeepPlan($old, $new, options)) {
        emitFragmentKept(keepPlan);
        promise = u.resolvedPromise();
      } else {
        replacement = function() {
          options.keepPlans = transferKeepableElements($old, $new, options);
          if ($old.is('body')) {
            up.syntax.clean($old);
            $old.replaceWith($new);
          } else {
            $new.insertBefore($old);
          }
          if (options.source !== false) {
            setSource($new, options.source);
          }
          autofocus($new);
          hello($new, options);
          return up.morph($old, $new, transition, options);
        };
        promise = destroy($old, {
          animation: replacement
        });
      }
      return promise;
    };
    transferKeepableElements = function($old, $new, options) {
      var $keepable, $keepableClone, j, keepPlans, keepable, len, plan, ref;
      keepPlans = [];
      if (options.keep) {
        ref = $old.find('[up-keep]');
        for (j = 0, len = ref.length; j < len; j++) {
          keepable = ref[j];
          $keepable = $(keepable);
          if (plan = findKeepPlan($keepable, $new, u.merge(options, {
            descendantsOnly: true
          }))) {
            $keepableClone = $keepable.clone();
            $keepable.replaceWith($keepableClone);
            plan.$newElement.replaceWith($keepable);
            keepPlans.push(plan);
          }
        }
      }
      return keepPlans;
    };
    findKeepPlan = function($element, $new, options) {
      var $keepable, $partner, description, keepEventArgs, partnerSelector;
      if (options.keep) {
        $keepable = $element;
        if (partnerSelector = u.castedAttr($keepable, 'up-keep')) {
          u.isString(partnerSelector) || (partnerSelector = '&');
          partnerSelector = resolveSelector(partnerSelector, $keepable);
          if (options.descendantsOnly) {
            $partner = $new.find(partnerSelector);
          } else {
            $partner = u.findWithSelf($new, partnerSelector);
          }
          $partner = $partner.first();
          if ($partner.length && $partner.is('[up-keep]')) {
            description = {
              $element: $keepable,
              $newElement: $partner,
              newData: up.syntax.data($partner)
            };
            keepEventArgs = u.merge(description, {
              message: ['Keeping element %o', $keepable.get(0)]
            });
            if (up.bus.nobodyPrevents('up:fragment:keep', keepEventArgs)) {
              return description;
            }
          }
        }
      }
    };

    /**
    Elements with an `up-keep` attribute will be persisted during
    [fragment updates](/a-up-target).
    
    For example:
    
        <audio up-keep src="song.mp3"></audio>
    
    The element you're keeping should have an umambiguous class name, ID or `up-id`
    attribute so Unpoly can find its new position within the page update.
    
    Emits events [`up:fragment:keep`](/up:fragment:keep) and [`up:fragment:kept`](/up:fragment:kept).
    
    \#\#\#\# Controlling if an element will be kept
    
    Unpoly will **only** keep an existing element if:
    
    - The existing element has an `up-keep` attribute
    - The response contains an element matching the CSS selector of the existing element
    - The matching element *also* has an `up-keep` attribute
    - The [`up:fragment:keep`](/up:fragment:keep) event that is [emitted](/up.emit) on the existing element
      is not prevented by a event listener.
    
    Let's say we want only keep an `<audio>` element as long as it plays
    the same song (as identified by the tag's `src` attribute).
    
    On the client we can achieve this by listening to an `up:keep:fragment` event
    and preventing it if the `src` attribute of the old and new element differ:
    
        up.compiler('audio', function($element) {
          $element.on('up:fragment:keep', function(event) {
            if $element.attr('src') !== event.$newElement.attr('src') {
              event.preventDefault();
            }
          });
        });
    
    If we don't want to solve this on the client, we can achieve the same effect
    on the server. By setting the value of the `up-keep` attribute we can
    define the CSS selector used for matching elements.
    
        <audio up-keep="audio[src='song.mp3']" src="song.mp3"></audio>
    
    Now, if a response no longer contains an `<audio src="song.mp3">` tag, the existing
    element will be destroyed and replaced by a fragment from the response.
    
    @selector [up-keep]
    @stable
     */

    /**
    This event is [emitted](/up.emit) before an existing element is [kept](/up-keep) during
    a page update.
    
    Event listeners can call `event.preventDefault()` on an `up:fragment:keep` event
    to prevent the element from being persisted. If the event is prevented, the element
    will be replaced by a fragment from the response.
    
    @event up:fragment:keep
    @param event.preventDefault()
      Event listeners may call this method to prevent the element from being preserved.
    @param {jQuery} event.$element
      The fragment that will be kept.
    @param {jqQuery} event.$newElement
      The discarded element.
    @param {jQuery} event.newData
      The value of the [`up-data`](/up-data) attribute of the discarded element,
      parsed as a JSON object.
    @stable
     */

    /**
    This event is [emitted](/up.emit) when an existing element has been [kept](/up-keep)
    during a page update.
    
    Event listeners can inspect the discarded update through `event.$newElement`
    and `event.newData` and then modify the preserved element when necessary.
    
    @event up:fragment:kept
    @param {jQuery} event.$element
      The fragment that has been kept.
    @param {jqQuery} event.$newElement
      The discarded element.
    @param {jQuery} event.newData
      The value of the [`up-data`](/up-data) attribute of the discarded element,
      parsed as a JSON object.
    @stable
     */
    parseImplantSteps = function(selector, options) {
      var comma, disjunction, i, j, len, pseudoClass, results, selectorAtom, selectorParts, transition, transitionArg, transitions;
      transitionArg = options.transition || options.animation || 'none';
      comma = /\ *,\ */;
      disjunction = selector.split(comma);
      if (u.isString(transitions)) {
        transitions = transitionArg.split(comma);
      } else {
        transitions = [transitionArg];
      }
      results = [];
      for (i = j = 0, len = disjunction.length; j < len; i = ++j) {
        selectorAtom = disjunction[i];
        selectorParts = selectorAtom.match(/^(.+?)(?:\:(before|after))?$/);
        selectorParts || up.fail('Could not parse selector atom "%s"', selectorAtom);
        selector = selectorParts[1];
        if (selector === 'html') {
          selector = 'body';
        }
        pseudoClass = selectorParts[2];
        transition = transitions[i] || u.last(transitions);
        results.push({
          selector: selector,
          pseudoClass: pseudoClass,
          transition: transition
        });
      }
      return results;
    };

    /**
    Compiles a page fragment that has been inserted into the DOM
    by external code.
    
    **As long as you manipulate the DOM using Unpoly, you will never
    need to call this method.** You only need to use `up.hello` if the
    DOM is manipulated without Unpoly' involvement, e.g. by setting
    the `innerHTML` property or calling jQuery methods like
    `html`, `insertAfter` or `appendTo`:
    
        $element = $('.element');
        $element.html('<div>...</div>');
        up.hello($element);
    
    This function emits the [`up:fragment:inserted`](/up:fragment:inserted)
    event.
    
    @function up.hello
    @param {String|Element|jQuery} selectorOrElement
    @param {String|Element|jQuery} [options.origin]
    @param {String|Element|jQuery} [options.kept]
    @return {jQuery}
      The compiled element
    @stable
     */
    hello = function(selectorOrElement, options) {
      var $element, j, keptElements, len, plan, ref;
      $element = $(selectorOrElement);
      options = u.options(options, {
        keepPlans: []
      });
      keptElements = [];
      ref = options.keepPlans;
      for (j = 0, len = ref.length; j < len; j++) {
        plan = ref[j];
        emitFragmentKept(plan);
        keptElements.push(plan.$element);
      }
      up.syntax.compile($element, {
        skip: keptElements
      });
      emitFragmentInserted($element, options);
      return $element;
    };

    /**
    When a page fragment has been [inserted or updated](/up.replace),
    this event is [emitted](/up.emit) on the fragment.
    
    \#\#\#\# Example
    
        up.on('up:fragment:inserted', function(event, $fragment) {
          console.log("Looks like we have a new %o!", $fragment);
        });
    
    @event up:fragment:inserted
    @param {jQuery} event.$element
      The fragment that has been inserted or updated.
    @stable
     */
    emitFragmentInserted = function(fragment, options) {
      var $fragment;
      $fragment = $(fragment);
      return up.emit('up:fragment:inserted', {
        $element: $fragment,
        message: ['Inserted fragment %o', $fragment.get(0)],
        origin: options.origin
      });
    };
    emitFragmentKept = function(keepPlan) {
      var eventAttrs;
      eventAttrs = u.merge(keepPlan, {
        message: ['Kept fragment %o', keepPlan.$element.get(0)]
      });
      return up.emit('up:fragment:kept', eventAttrs);
    };
    autofocus = function($element) {
      var $control, selector;
      selector = '[autofocus]:last';
      $control = u.findWithSelf($element, selector);
      if ($control.length && $control.get(0) !== document.activeElement) {
        return $control.focus();
      }
    };
    isRealElement = function($element) {
      var unreal;
      unreal = '.up-ghost, .up-destroying';
      return $element.closest(unreal).length === 0;
    };

    /**
    Returns the first element matching the given selector, but
    ignores elements that are being [destroyed](/up.destroy) or [transitioned](/up.morph).
    
    If the given argument is already a jQuery collection (or an array
    of DOM elements), the first element matching these conditions
    is returned.
    
    Returns `undefined` if no element matches these conditions.
    
    @function up.first
    @param {String|Element|jQuery|Array<Element>} selectorOrElement
    @param {String} options.layer
      The name of the layer in which to find the element. Valid values are
      `auto`, `page`, `modal` and `popup`.
    @param {}
    @return {jQuery|Undefined}
      The first element that is neither a ghost or being destroyed,
      or `undefined` if no such element was given.
    @experimental
     */
    first = function(selectorOrElement, options) {
      options = u.options(options, {
        layer: 'auto'
      });
      if (options.layer === 'auto') {
        return firstInPriority(selectorOrElement, options.origin);
      } else {
        return firstInLayer(selectorOrElement, options.layer);
      }
    };
    firstInPriority = function(selectorOrElement, origin) {
      var $match, j, layer, layers, len, originLayer;
      layers = ['popup', 'modal', 'page'];
      $match = void 0;
      if (u.isPresent(origin)) {
        originLayer = layerOf(origin);
        u.remove(layers, originLayer);
        layers.unshift(originLayer);
      }
      for (j = 0, len = layers.length; j < len; j++) {
        layer = layers[j];
        if ($match = firstInLayer(selectorOrElement, layer)) {
          break;
        }
      }
      return $match;
    };
    firstInLayer = function(selectorOrElement, layer) {
      var $element, $elements, $match, element, j, len;
      $elements = $(selectorOrElement);
      $match = void 0;
      for (j = 0, len = $elements.length; j < len; j++) {
        element = $elements[j];
        $element = $(element);
        if (isRealElement($element) && matchesLayer($element, layer)) {
          $match = $element;
          break;
        }
      }
      return $match;
    };
    layerOf = function(selectorOrElement) {
      var $element;
      $element = $(selectorOrElement);
      if (up.popup.contains($element)) {
        return 'popup';
      } else if (up.modal.contains($element)) {
        return 'modal';
      } else {
        return 'page';
      }
    };
    matchesLayer = function(selectorOrElement, layer) {
      return layerOf(selectorOrElement) === layer;
    };

    /**
    Destroys the given element or selector.
    
    Takes care that all [`up.compiler`](/up.compiler) destructors, if any, are called.
    
    The element is removed from the DOM.
    Note that if you choose to animate the element removal using `options.animate`,
    the element won't be removed until after the animation has completed.
    
    Emits events [`up:fragment:destroy`](/up:fragment:destroy) and [`up:fragment:destroyed`](/up:fragment:destroyed).
    
    @function up.destroy
    @param {String|Element|jQuery} selectorOrElement 
    @param {String} [options.history]
      A URL that will be pushed as a new history entry when the element begins destruction.
    @param {String} [options.title]
      The document title to set when the element begins destruction.
    @param {String|Function} [options.animation='none']
      The animation to use before the element is removed from the DOM.
    @param {Number} [options.duration]
      The duration of the animation. See [`up.animate`](/up.animate).
    @param {Number} [options.delay]
      The delay before the animation starts. See [`up.animate`](/up.animate).
    @param {String} [options.easing]
      The timing function that controls the animation's acceleration. [`up.animate`](/up.animate).
    @return {Deferred}
      A promise that will be resolved once the element has been removed from the DOM.
    @stable
     */
    destroy = function(selectorOrElement, options) {
      var $element, animateOptions, animationDeferred, destroyMessage, destroyedMessage;
      $element = $(selectorOrElement);
      if (!$element.is('.up-placeholder, .up-tooltip, .up-modal, .up-popup')) {
        destroyMessage = ['Destroying fragment %o', $element.get(0)];
        destroyedMessage = ['Destroyed fragment %o', $element.get(0)];
      }
      if ($element.length === 0) {
        return u.resolvedDeferred();
      } else if (up.bus.nobodyPrevents('up:fragment:destroy', {
        $element: $element,
        message: destroyMessage
      })) {
        options = u.options(options, {
          animation: false
        });
        animateOptions = up.motion.animateOptions(options);
        $element.addClass('up-destroying');
        updateHistory(options);
        animationDeferred = u.presence(options.animation, u.isDeferred) || up.motion.animate($element, options.animation, animateOptions);
        animationDeferred.then(function() {
          up.syntax.clean($element);
          up.emit('up:fragment:destroyed', {
            $element: $element,
            message: destroyedMessage
          });
          return $element.remove();
        });
        return animationDeferred;
      } else {
        return $.Deferred();
      }
    };

    /**
    Before a page fragment is being [destroyed](/up.destroy), this
    event is [emitted](/up.emit) on the fragment.
    
    If the destruction is animated, this event is emitted before the
    animation begins.
    
    @event up:fragment:destroy
    @param {jQuery} event.$element
      The page fragment that is about to be destroyed.
    @param event.preventDefault()
      Event listeners may call this method to prevent the fragment from being destroyed.
    @stable
     */

    /**
    This event is [emitted](/up.emit) right before a [destroyed](/up.destroy)
    page fragment is removed from the DOM.
    
    If the destruction is animated, this event is emitted after
    the animation has ended.
    
    @event up:fragment:destroyed
    @param {jQuery} event.$element
      The page fragment that is about to be removed from the DOM.
    @stable
     */

    /**
    Replaces the given element with a fresh copy fetched from the server.
    
    \#\#\#\# Example
    
        up.on('new-mail', function() {
          up.reload('.inbox');
        });
    
    Unpoly remembers the URL from which a fragment was loaded, so you
    don't usually need to give an URL when reloading.
    
    @function up.reload
    @param {String|Element|jQuery} selectorOrElement
    @param {Object} [options]
      See options for [`up.replace`](/up.replace)
    @param {String} [options.url]
      The URL from which to reload the fragment.
      This defaults to the URL from which the fragment was originally loaded.
    @stable
     */
    reload = function(selectorOrElement, options) {
      var sourceUrl;
      options = u.options(options, {
        cache: false
      });
      sourceUrl = options.url || source(selectorOrElement);
      return replace(selectorOrElement, sourceUrl, options);
    };
    up.on('up:app:boot', function() {
      var $body;
      $body = $(document.body);
      setSource($body, up.browser.url());
      return hello($body);
    });
    up.on('up:framework:reset', reset);
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      replace: replace,
      reload: reload,
      destroy: destroy,
      extract: extract,
      first: first,
      source: source,
      resolveSelector: resolveSelector,
      hello: hello,
      config: config
    };
  })(jQuery);

  up.replace = up.flow.replace;

  up.extract = up.flow.extract;

  up.reload = up.flow.reload;

  up.destroy = up.flow.destroy;

  up.first = up.flow.first;

  up.hello = up.flow.hello;

}).call(this);

/**
Animation
=========
  
Whenever you update a page fragment (through methods like
[`up.replace`](/up.replace) or UJS attributes like [`up-target`](/up-target))
you can animate the change.

For instance, when you replace a selector `.list` with a new `.list`
from the server, you can add an `up-transition="cross-fade"` attribute
to smoothly fade out the old `.list` while fading in the new `.list`:

    <a href="/users" up-target=".list" up-transition="cross-fade">Show users</a>

Transitions vs. animations
--------------------------

When we morph between an old an new element, we call it a *transition*.
In contrast, when we animate a new element without simultaneously removing an
old element, we call it an *animation*.

An example for an animation is opening a new dialog, which we can animate
using the `up-animation` attribute:

    <a href="/users" up-modal=".list" up-animation="move-from-top">Show users</a>

Predefined animations and transitions
-------------------------------------

Unpoly ships with a number of predefined [animations](/up.animate#named-animation)
and [transitions](/up.morph#named-animation).
You can also easily [define your own animations](/up.animation)
or [transitions](/up.transition) using Javascript or CSS.

@class up.motion
 */

(function() {
  var slice = [].slice;

  up.motion = (function($) {
    var GHOSTING_CLASS, GHOSTING_DEFERRED_KEY, animate, animateOptions, animation, animations, assertIsDeferred, config, defaultAnimations, defaultTransitions, ensureMorphable, findAnimation, finish, finishGhosting, isEnabled, isNone, morph, none, prependCopy, reset, resolvableWhen, skipMorph, snapshot, transition, transitions, translateCss, u, withGhosts;
    u = up.util;
    animations = {};
    defaultAnimations = {};
    transitions = {};
    defaultTransitions = {};

    /**
    Sets default options for animations and transitions.
    
    @property up.motion.config
    @param {Number} [config.duration=300]
      The default duration for all animations and transitions (in milliseconds).
    @param {Number} [config.delay=0]
      The default delay for all animations and transitions (in milliseconds).
    @param {String} [config.easing='ease']
      The default timing function that controls the acceleration of animations and transitions.
    
      See [W3C documentation](http://www.w3.org/TR/css3-transitions/#transition-timing-function)
      for a list of pre-defined timing functions.
    @param {Boolean} [config.enabled=true]
      Whether animation is enabled.
    
      Set this to `false` to disable animation globally.
      This can be useful in full-stack integration tests like a Selenium test suite.
    
      Regardless of this setting, all animations will be skipped on browsers
      that do not support [CSS transitions](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions).
    @stable
     */
    config = u.config({
      duration: 300,
      delay: 0,
      easing: 'ease',
      enabled: true
    });
    reset = function() {
      finish();
      animations = u.copy(defaultAnimations);
      transitions = u.copy(defaultTransitions);
      return config.reset();
    };

    /**
    Returns whether Unpoly will perform animations.
    
    Animations will be performed if the browser supports
    [CSS transitions](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions)
    and if [`up.motion.config.enabled`](/up.motion.config) is set to `true` (which is the default).
    
    @function up.motion.isEnabled
    @return {Boolean}
    @stable
     */
    isEnabled = function() {
      return config.enabled && up.browser.canCssTransition();
    };

    /**
    Applies the given animation to the given element.
    
    \#\#\#\# Example
    
        up.animate('.warning', 'fade-in');
    
    You can pass additional options:
    
        up.animate('warning', '.fade-in', {
          delay: 1000,
          duration: 250,
          easing: 'linear'
        });
    
    \#\#\#\# Named animations
    
    The following animations are pre-defined:
    
    | `fade-in`          | Changes the element's opacity from 0% to 100% |
    | `fade-out`         | Changes the element's opacity from 100% to 0% |
    | `move-to-top`      | Moves the element upwards until it exits the screen at the top edge |
    | `move-from-top`    | Moves the element downwards from beyond the top edge of the screen until it reaches its current position |
    | `move-to-bottom`   | Moves the element downwards until it exits the screen at the bottom edge |
    | `move-from-bottom` | Moves the element upwards from beyond the bottom edge of the screen until it reaches its current position |
    | `move-to-left`     | Moves the element leftwards until it exists the screen at the left edge  |
    | `move-from-left`   | Moves the element rightwards from beyond the left edge of the screen until it reaches its current position |
    | `move-to-right`    | Moves the element rightwards until it exists the screen at the right edge  |
    | `move-from-right`  | Moves the element leftwards from beyond the right  edge of the screen until it reaches its current position |
    | `none`             | An animation that has no visible effect. Sounds useless at first, but can save you a lot of `if` statements. |
    
    You can define additional named animations using [`up.animation`](/up.animation).
    
    \#\#\#\# Animating CSS properties directly
    
    By passing an object instead of an animation name, you can animate
    the CSS properties of the given element:
    
        var $warning = $('.warning');
        $warning.css({ opacity: 0 });
        up.animate($warning, { opacity: 1 });
    
    \#\#\#\# Multiple animations on the same element
    
    Unpoly doesn't allow more than one concurrent animation on the same element.
    
    If you attempt to animate an element that is already being animated,
    the previous animation will instantly jump to its last frame before
    the new animation begins.
    
    @function up.animate
    @param {Element|jQuery|String} elementOrSelector
      The element to animate.
    @param {String|Function|Object} animation
      Can either be:
    
      - The animation's name
      - A function performing the animation
      - An object of CSS attributes describing the last frame of the animation
    @param {Number} [options.duration=300]
      The duration of the animation, in milliseconds.
    @param {Number} [options.delay=0]
      The delay before the animation starts, in milliseconds.
    @param {String} [options.easing='ease']
      The timing function that controls the animation's acceleration.
    
      See [W3C documentation](http://www.w3.org/TR/css3-transitions/#transition-timing-function)
      for a list of pre-defined timing functions.
    @return {Promise}
      A promise for the animation's end.
    @stable
     */
    animate = function(elementOrSelector, animation, options) {
      var $element;
      $element = $(elementOrSelector);
      finish($element);
      options = animateOptions(options);
      if (animation === 'none' || animation === false) {
        return none();
      } else if (u.isFunction(animation)) {
        return assertIsDeferred(animation($element, options), animation);
      } else if (u.isString(animation)) {
        return animate($element, findAnimation(animation), options);
      } else if (u.isHash(animation)) {
        if (isEnabled()) {
          return u.cssAnimate($element, animation, options);
        } else {
          $element.css(animation);
          return u.resolvedDeferred();
        }
      } else {
        return up.fail("Unknown animation type for %o", animation);
      }
    };

    /**
    Extracts animation-related options from the given options hash.
    If `$element` is given, also inspects the element for animation-related
    attributes like `up-easing` or `up-duration`.
    
    @function up.motion.animateOptions
    @internal
     */
    animateOptions = function() {
      var $element, args, consolidatedOptions, moduleDefaults, userOptions;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      userOptions = args.shift() || {};
      $element = u.isJQuery(args[0]) ? args.shift() : u.nullJQuery();
      moduleDefaults = u.isObject(args[0]) ? args.shift() : {};
      consolidatedOptions = {};
      consolidatedOptions.easing = u.option(userOptions.easing, u.presentAttr($element, 'up-easing'), moduleDefaults.easing, config.easing);
      consolidatedOptions.duration = Number(u.option(userOptions.duration, u.presentAttr($element, 'up-duration'), moduleDefaults.duration, config.duration));
      consolidatedOptions.delay = Number(u.option(userOptions.delay, u.presentAttr($element, 'up-delay'), moduleDefaults.delay, config.delay));
      return consolidatedOptions;
    };
    findAnimation = function(name) {
      return animations[name] || up.fail("Unknown animation %o", name);
    };
    GHOSTING_DEFERRED_KEY = 'up-ghosting-deferred';
    GHOSTING_CLASS = 'up-ghosting';
    withGhosts = function($old, $new, options, block) {
      var $both, $viewport, deferred, newCopy, newScrollTop, oldCopy, oldScrollTop, showNew;
      if (options.copy === false || $old.is('.up-ghost') || $new.is('.up-ghost')) {
        return block($old, $new);
      }
      oldCopy = void 0;
      newCopy = void 0;
      oldScrollTop = void 0;
      newScrollTop = void 0;
      $viewport = up.layout.viewportOf($old);
      $both = $old.add($new);
      u.temporaryCss($new, {
        display: 'none'
      }, function() {
        oldCopy = prependCopy($old, $viewport);
        return oldScrollTop = $viewport.scrollTop();
      });
      u.temporaryCss($old, {
        display: 'none'
      }, function() {
        up.layout.revealOrRestoreScroll($new, options);
        newCopy = prependCopy($new, $viewport);
        return newScrollTop = $viewport.scrollTop();
      });
      oldCopy.moveTop(newScrollTop - oldScrollTop);
      $old.hide();
      showNew = u.temporaryCss($new, {
        opacity: '0'
      });
      deferred = block(oldCopy.$ghost, newCopy.$ghost);
      $both.data(GHOSTING_DEFERRED_KEY, deferred);
      $both.addClass(GHOSTING_CLASS);
      deferred.then(function() {
        $both.removeData(GHOSTING_DEFERRED_KEY);
        $both.removeClass(GHOSTING_CLASS);
        showNew();
        oldCopy.$bounds.remove();
        return newCopy.$bounds.remove();
      });
      return deferred;
    };

    /**
    Completes [animations](/up.animate) and [transitions](/up.morph).
    
    If called without arguments, all animations on the screen are completed.
    If given an element (or selector), animations on that element and its children
    are completed.
    
    Animations are completed by jumping to the last animation frame instantly.
    
    Does nothing if there are no animation to complete.
    
    @function up.motion.finish
    @param {Element|jQuery|String} [elementOrSelector]
    @stable
     */
    finish = function(elementOrSelector) {
      var $animatingSubtree, $element, $ghostingSubtree;
      if (elementOrSelector == null) {
        elementOrSelector = '.up-animating';
      }
      $element = $(elementOrSelector);
      $animatingSubtree = u.findWithSelf($element, '.up-animating');
      u.finishCssAnimate($animatingSubtree);
      $ghostingSubtree = u.findWithSelf($element, "." + GHOSTING_CLASS);
      return finishGhosting($ghostingSubtree);
    };
    finishGhosting = function($collection) {
      return $collection.each(function() {
        var $element, existingGhosting;
        $element = $(this);
        if (existingGhosting = u.pluckData($element, GHOSTING_DEFERRED_KEY)) {
          return existingGhosting.resolve();
        }
      });
    };
    assertIsDeferred = function(object, source) {
      if (u.isDeferred(object)) {
        return object;
      } else {
        return up.fail("Did not return a promise with .then and .resolve methods: %o", source);
      }
    };

    /**
    Performs an animated transition between two elements.
    Transitions are implement by performing two animations in parallel,
    causing one element to disappear and the other to appear.
    
    Note that the transition does not remove any elements from the DOM.
    The first element will remain in the DOM, albeit hidden using `display: none`.
    
    \#\#\#\# Named transitions
    
    The following transitions are pre-defined:
    
    | `cross-fade` | Fades out the first element. Simultaneously fades in the second element. |
    | `move-up`    | Moves the first element upwards until it exits the screen at the top edge. Simultaneously moves the second element upwards from beyond the bottom edge of the screen until it reaches its current position. |
    | `move-down`  | Moves the first element downwards until it exits the screen at the bottom edge. Simultaneously moves the second element downwards from beyond the top edge of the screen until it reaches its current position. |
    | `move-left`  | Moves the first element leftwards until it exists the screen at the left edge. Simultaneously moves the second element leftwards from beyond the right  edge of the screen until it reaches its current position. |
    | `move-right` | Moves the first element rightwards until it exists the screen at the right edge. Simultaneously moves the second element rightwards from beyond the left edge of the screen until it reaches its current position. |
    | `none`       | A transition that has no visible effect. Sounds useless at first, but can save you a lot of `if` statements. |
    
    You can define additional named transitions using [`up.transition`](/up.transition).
    
    You can also compose a transition from two [named animations](/named-animations).
    separated by a slash character (`/`):
    
    - `move-to-bottom/fade-in`
    - `move-to-left/move-from-top`
    
    \#\#\#\# Implementation details
    
    During a transition both the old and new element occupy
    the same position on the screen.
    
    Since the CSS layout flow will usually not allow two elements to
    overlay the same space, Unpoly:
    
    - The old and new elements are cloned
    - The old element is removed from the layout flow using `display: hidden`
    - The new element is hidden, but still leaves space in the layout flow by setting `visibility: hidden`
    - The clones are [absolutely positioned](https://developer.mozilla.org/en-US/docs/Web/CSS/position#Absolute_positioning)
      over the original elements.
    - The transition is applied to the cloned elements.
      At no point will the hidden, original elements be animated.
    - When the transition has finished, the clones are removed from the DOM and the new element is shown.
      The old element remains hidden in the DOM.
    
    @function up.morph
    @param {Element|jQuery|String} source
    @param {Element|jQuery|String} target
    @param {Function|String} transitionOrName
    @param {Number} [options.duration=300]
      The duration of the animation, in milliseconds.
    @param {Number} [options.delay=0]
      The delay before the animation starts, in milliseconds.
    @param {String} [options.easing='ease']
      The timing function that controls the transition's acceleration.
    
      See [W3C documentation](http://www.w3.org/TR/css3-transitions/#transition-timing-function)
      for a list of pre-defined timing functions.
    @param {Boolean} [options.reveal=false]
      Whether to reveal the new element by scrolling its parent viewport.
    @return {Promise}
      A promise for the transition's end.
    @stable
     */
    morph = function(source, target, transitionOrName, options) {
      var $new, $old;
      if (transitionOrName === 'none') {
        transitionOrName = false;
      }
      options = u.options(options);
      $old = $(source);
      $new = $(target);
      ensureMorphable($old, transitionOrName);
      ensureMorphable($new, transitionOrName);
      return up.log.group((transitionOrName ? 'Morphing %o to %o (using %s, %o)' : void 0), $old.get(0), $new.get(0), transitionOrName, options, function() {
        var animation, parsedOptions, parts, transition;
        parsedOptions = u.only(options, 'reveal', 'restoreScroll', 'source');
        parsedOptions = u.extend(parsedOptions, animateOptions(options));
        if (isEnabled()) {
          finish($old);
          finish($new);
          if (!transitionOrName) {
            return skipMorph($old, $new, parsedOptions);
          } else if (animation = animations[transitionOrName]) {
            skipMorph($old, $new, parsedOptions);
            return animate($new, animation, parsedOptions);
          } else if (transition = u.presence(transitionOrName, u.isFunction) || transitions[transitionOrName]) {
            return withGhosts($old, $new, parsedOptions, function($oldGhost, $newGhost) {
              var transitionPromise;
              transitionPromise = transition($oldGhost, $newGhost, parsedOptions);
              return assertIsDeferred(transitionPromise, transitionOrName);
            });
          } else if (u.isString(transitionOrName) && transitionOrName.indexOf('/') >= 0) {
            parts = transitionOrName.split('/');
            transition = function($old, $new, options) {
              return resolvableWhen(animate($old, parts[0], options), animate($new, parts[1], options));
            };
            return morph($old, $new, transition, parsedOptions);
          } else {
            return up.fail("Unknown transition %o", transitionOrName);
          }
        } else {
          return skipMorph($old, $new, parsedOptions);
        }
      });
    };
    ensureMorphable = function($element, transition) {
      var element;
      if (transition && $element.parents('body').length === 0) {
        element = $element.get(0);
        return up.fail("Can't morph a <%s> element (%o)", element.tagName, element);
      }
    };

    /**
    This causes the side effects of a successful transition, but instantly.
    We use this to skip morphing for old browsers, or when the developer
    decides to only animate the new element (i.e. no real ghosting or transition)   .
    
    @internal
     */
    skipMorph = function($old, $new, options) {
      $old.hide();
      return up.layout.revealOrRestoreScroll($new, options);
    };

    /**
    @internal
     */
    prependCopy = function($element, $viewport) {
      var $bounds, $fixedElements, $ghost, elementDims, fixedElement, i, len, moveTop, top;
      elementDims = u.measure($element, {
        relative: true,
        inner: true
      });
      $ghost = $element.clone();
      $ghost.find('script').remove();
      $ghost.css({
        position: $element.css('position') === 'static' ? 'static' : 'relative',
        top: 'auto',
        right: 'auto',
        bottom: 'auto',
        left: 'auto',
        width: '100%',
        height: '100%'
      });
      $ghost.addClass('up-ghost');
      $bounds = $('<div class="up-bounds"></div>');
      $bounds.css({
        position: 'absolute'
      });
      $bounds.css(elementDims);
      top = elementDims.top;
      moveTop = function(diff) {
        if (diff !== 0) {
          top += diff;
          return $bounds.css({
            top: top
          });
        }
      };
      $ghost.appendTo($bounds);
      $bounds.insertBefore($element);
      moveTop($element.offset().top - $ghost.offset().top);
      $fixedElements = up.layout.fixedChildren($ghost);
      for (i = 0, len = $fixedElements.length; i < len; i++) {
        fixedElement = $fixedElements[i];
        u.fixedToAbsolute(fixedElement, $viewport);
      }
      return {
        $ghost: $ghost,
        $bounds: $bounds,
        moveTop: moveTop
      };
    };

    /**
    Defines a named transition.
    
    Here is the definition of the pre-defined `cross-fade` animation:
    
        up.transition('cross-fade', ($old, $new, options) ->
          up.motion.when(
            up.animate($old, 'fade-out', options),
            up.animate($new, 'fade-in', options)
          )
        )
    
    It is recommended that your transitions use [`up.animate`](/up.animate),
    passing along the `options` that were passed to you.
    
    If you choose to *not* use `up.animate` and roll your own
    logic instead, your code must honor the following contract:
    
    1. It must honor the passed options `{ delay, duration, easing }` if present
    2. It must *not* remove any of the given elements from the DOM.
    3. It returns a promise that is resolved when the transition ends
    4. The returned promise responds to a `resolve()` function that
       instantly jumps to the last transition frame and resolves the promise.
    
    Calling [`up.animate`](/up.animate) with an object argument
    will take care of all these points.
    
    @function up.transition
    @param {String} name
    @param {Function} transition
    @stable
     */
    transition = function(name, transition) {
      return transitions[name] = transition;
    };

    /**
    Defines a named animation.
    
    Here is the definition of the pre-defined `fade-in` animation:
    
        up.animation('fade-in', function($element, options) {
          $element.css(opacity: 0);
          up.animate($ghost, { opacity: 1 }, options);
        })
    
    It is recommended that your definitions always end by calling
    calling [`up.animate`](/up.animate) with an object argument, passing along
    the `options` that were passed to you.
    
    If you choose to *not* use `up.animate` and roll your own
    animation code instead, your code must honor the following contract:
    
    1. It must honor the passed options `{ delay, duration, easing }` if present
    2. It must *not* remove the passed element from the DOM.
    3. It returns a promise that is resolved when the animation ends
    4. The returned promise responds to a `resolve()` function that
       instantly jumps to the last animation frame and resolves the promise.
    
    Calling [`up.animate`](/up.animate) with an object argument
    will take care of all these points.
    
    @function up.animation
    @param {String} name
    @param {Function} animation
    @stable
     */
    animation = function(name, animation) {
      return animations[name] = animation;
    };
    snapshot = function() {
      defaultAnimations = u.copy(animations);
      return defaultTransitions = u.copy(transitions);
    };

    /**
    Returns a new deferred that resolves once all given deferreds have resolved.
    
    Other then [`$.when` from jQuery](https://api.jquery.com/jquery.when/),
    the combined deferred will have a `resolve` method. This `resolve` method
    will resolve all the wrapped deferreds.
    
    This is important when composing multiple existing animations into
    a [custom transition](/up.transition), since the transition function
    must return a deferred with a `resolve` function that fast-forwards
    the animation to its last frame.
    
    @function up.motion.when
    @param {Array<Deferred>} deferreds...
    @return {Deferred} A new deferred
    @experimental
     */
    resolvableWhen = u.resolvableWhen;

    /**
    Returns a no-op animation or transition which has no visual effects
    and completes instantly.
    
    @function up.motion.none
    @return {Promise}
      A resolved promise
    @stable
     */
    none = u.resolvedDeferred;

    /**
    Returns whether the given animation option will cause the animation
    to be skipped.
    
    @function up.motion.isNone
    @internal
     */
    isNone = function(animation) {
      return animation === false || animation === 'none' || animation === none;
    };
    animation('none', none);
    animation('fade-in', function($ghost, options) {
      $ghost.css({
        opacity: 0
      });
      return animate($ghost, {
        opacity: 1
      }, options);
    });
    animation('fade-out', function($ghost, options) {
      $ghost.css({
        opacity: 1
      });
      return animate($ghost, {
        opacity: 0
      }, options);
    });
    translateCss = function(x, y) {
      return {
        transform: "translate(" + x + "px, " + y + "px)"
      };
    };
    animation('move-to-top', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = box.top + box.height;
      $ghost.css(translateCss(0, 0));
      return animate($ghost, translateCss(0, -travelDistance), options);
    });
    animation('move-from-top', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = box.top + box.height;
      $ghost.css(translateCss(0, -travelDistance));
      return animate($ghost, translateCss(0, 0), options);
    });
    animation('move-to-bottom', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = u.clientSize().height - box.top;
      $ghost.css(translateCss(0, 0));
      return animate($ghost, translateCss(0, travelDistance), options);
    });
    animation('move-from-bottom', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = u.clientSize().height - box.top;
      $ghost.css(translateCss(0, travelDistance));
      return animate($ghost, translateCss(0, 0), options);
    });
    animation('move-to-left', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = box.left + box.width;
      $ghost.css(translateCss(0, 0));
      return animate($ghost, translateCss(-travelDistance, 0), options);
    });
    animation('move-from-left', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = box.left + box.width;
      $ghost.css(translateCss(-travelDistance, 0));
      return animate($ghost, translateCss(0, 0), options);
    });
    animation('move-to-right', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = u.clientSize().width - box.left;
      $ghost.css(translateCss(0, 0));
      return animate($ghost, translateCss(travelDistance, 0), options);
    });
    animation('move-from-right', function($ghost, options) {
      var box, travelDistance;
      box = u.measure($ghost);
      travelDistance = u.clientSize().width - box.left;
      $ghost.css(translateCss(travelDistance, 0));
      return animate($ghost, translateCss(0, 0), options);
    });
    animation('roll-down', function($ghost, options) {
      var deferred, fullHeight, styleMemo;
      fullHeight = $ghost.height();
      styleMemo = u.temporaryCss($ghost, {
        height: '0px',
        overflow: 'hidden'
      });
      deferred = animate($ghost, {
        height: fullHeight + "px"
      }, options);
      deferred.then(styleMemo);
      return deferred;
    });
    transition('none', none);
    transition('move-left', function($old, $new, options) {
      return resolvableWhen(animate($old, 'move-to-left', options), animate($new, 'move-from-right', options));
    });
    transition('move-right', function($old, $new, options) {
      return resolvableWhen(animate($old, 'move-to-right', options), animate($new, 'move-from-left', options));
    });
    transition('move-up', function($old, $new, options) {
      return resolvableWhen(animate($old, 'move-to-top', options), animate($new, 'move-from-bottom', options));
    });
    transition('move-down', function($old, $new, options) {
      return resolvableWhen(animate($old, 'move-to-bottom', options), animate($new, 'move-from-top', options));
    });
    transition('cross-fade', function($old, $new, options) {
      return resolvableWhen(animate($old, 'fade-out', options), animate($new, 'fade-in', options));
    });
    up.on('up:framework:booted', snapshot);
    up.on('up:framework:reset', reset);
    return {
      morph: morph,
      animate: animate,
      animateOptions: animateOptions,
      finish: finish,
      transition: transition,
      animation: animation,
      config: config,
      isEnabled: isEnabled,
      defaults: function() {
        return up.fail('up.motion.defaults(...) no longer exists. Set values on he up.motion.config property instead.');
      },
      none: none,
      when: resolvableWhen,
      prependCopy: prependCopy,
      isNone: isNone
    };
  })(jQuery);

  up.transition = up.motion.transition;

  up.animation = up.motion.animation;

  up.morph = up.motion.morph;

  up.animate = up.motion.animate;

}).call(this);

/**
Caching and preloading
======================

All HTTP requests go through the Unpoly proxy.
It caches a [limited](/up.proxy.config) number of server responses
for a [limited](/up.proxy.config) amount of time,
making requests to these URLs return instantly.
  
The cache is cleared whenever the user makes a non-`GET` request
(like `POST`, `PUT` or `DELETE`).

The proxy can also used to speed up reaction times by [preloading
links when the user hovers over the click area](/up-preload) (or puts the mouse/finger
down before releasing). This way the response will already be cached when
the user performs the click.

@class up.proxy
 */

(function() {
  var slice = [].slice;

  up.proxy = (function($) {
    var $waitingLink, ajax, alias, cache, cacheKey, cancelPreloadDelay, cancelSlowDelay, checkPreload, clear, config, get, isBusy, isCachable, isIdempotent, isIdle, load, loadEnded, loadOrQueue, loadStarted, normalizeRequest, pendingCount, pokeQueue, preload, preloadDelayTimer, queue, queuedRequests, remove, reset, responseReceived, set, slowDelayTimer, slowEventEmitted, startPreloadDelay, u;
    u = up.util;
    $waitingLink = void 0;
    preloadDelayTimer = void 0;
    slowDelayTimer = void 0;
    pendingCount = void 0;
    slowEventEmitted = void 0;
    queuedRequests = [];

    /**
    @property up.proxy.config
    @param {Number} [config.preloadDelay=75]
      The number of milliseconds to wait before [`[up-preload]`](/up-preload)
      starts preloading.
    @param {Number} [config.cacheSize=70]
      The maximum number of responses to cache.
      If the size is exceeded, the oldest items will be dropped from the cache.
    @param {Number} [config.cacheExpiry=300000]
      The number of milliseconds until a cache entry expires.
      Defaults to 5 minutes.
    @param {Number} [config.slowDelay=300]
      How long the proxy waits until emitting the [`up:proxy:slow` event](/up:proxy:slow).
      Use this to prevent flickering of spinners.
    @param {Number} [config.maxRequests=4]
      The maximum number of concurrent requests to allow before additional
      requests are queued. This currently ignores preloading requests.
    
      You might find it useful to set this to `1` in full-stack integration
      tests (e.g. Selenium).
    
      Note that your browser might [impose its own request limit](http://www.browserscope.org/?category=network)
      regardless of what you configure here.
    @param {Array<String>} [config.wrapMethods]
      An array of uppercase HTTP method names. AJAX requests with one of these methods
      will be converted into a `POST` request and carry their original method as a `_method`
      parameter. This is to [prevent unexpected redirect behavior](https://makandracards.com/makandra/38347).
    @param {String} [config.wrapMethodParam]
      The name of the POST parameter when wrapping HTTP methods in a `POST` request.
    @param {Array<String>} [config.safeMethods]
      An array of uppercase HTTP method names that are considered idempotent.
      The proxy cache will only cache idempotent requests and will clear the entire
      cache after a non-idempotent request.
    @stable
     */
    config = u.config({
      slowDelay: 300,
      preloadDelay: 75,
      cacheSize: 70,
      cacheExpiry: 1000 * 60 * 5,
      maxRequests: 4,
      wrapMethods: ['PATCH', 'PUT', 'DELETE'],
      wrapMethodParam: '_method',
      safeMethods: ['GET', 'OPTIONS', 'HEAD']
    });
    cacheKey = function(request) {
      normalizeRequest(request);
      return [request.url, request.method, u.requestDataAsQuery(request.data), request.target].join('|');
    };
    cache = u.cache({
      size: function() {
        return config.cacheSize;
      },
      expiry: function() {
        return config.cacheExpiry;
      },
      key: cacheKey
    });

    /**
    Returns a cached response for the given request.
    
    Returns `undefined` if the given request is not currently cached.
    
    @function up.proxy.get
    @return {Promise}
      A promise for the response that is API-compatible with the
      promise returned by [`jQuery.ajax`](http://api.jquery.com/jquery.ajax/).
    @experimental
     */
    get = function(request) {
      var candidate, candidates, i, len, requestForBody, requestForHtml, response;
      request = normalizeRequest(request);
      if (isCachable(request)) {
        candidates = [request];
        if (request.target !== 'html') {
          requestForHtml = u.merge(request, {
            target: 'html'
          });
          candidates.push(requestForHtml);
          if (request.target !== 'body') {
            requestForBody = u.merge(request, {
              target: 'body'
            });
            candidates.push(requestForBody);
          }
        }
        for (i = 0, len = candidates.length; i < len; i++) {
          candidate = candidates[i];
          if (response = cache.get(candidate)) {
            return response;
          }
        }
      }
    };
    cancelPreloadDelay = function() {
      clearTimeout(preloadDelayTimer);
      return preloadDelayTimer = null;
    };
    cancelSlowDelay = function() {
      clearTimeout(slowDelayTimer);
      return slowDelayTimer = null;
    };
    reset = function() {
      $waitingLink = null;
      cancelPreloadDelay();
      cancelSlowDelay();
      pendingCount = 0;
      config.reset();
      cache.clear();
      slowEventEmitted = false;
      return queuedRequests = [];
    };
    reset();
    normalizeRequest = function(request) {
      if (!request._normalized) {
        request.method = u.normalizeMethod(request.method);
        if (request.url) {
          request.url = u.normalizeUrl(request.url);
        }
        request.target || (request.target = 'body');
        request._normalized = true;
      }
      return request;
    };

    /**
    Makes a request to the given URL and caches the response.
    If the response was already cached, returns the HTML instantly.
    
    If requesting a URL that is not read-only, the response will
    not be cached and the entire cache will be cleared.
    Only requests with a method of `GET`, `OPTIONS` and `HEAD`
    are considered to be read-only.
    
    \#\#\#\# Example
    
        up.ajax('/search', data: { query: 'sunshine' }).then(function(data, status, xhr) {
          console.log('The response body is %o', data);
        }).fail(function(xhr, status, error) {
          console.error('The request failed');
        });
    
    \#\#\#\# Events
    
    If a network connection is attempted, the proxy will emit
    a [`up:proxy:load`](/up:proxy:load) event with the `request` as its argument.
    Once the response is received, a [`up:proxy:receive`](/up:proxy:receive) event will
    be emitted.
    
    @function up.ajax
    @param {String} url
    @param {String} [request.method='GET']
    @param {String} [request.target='body']
    @param {Boolean} [request.cache]
      Whether to use a cached response, if available.
      If set to `false` a network connection will always be attempted.
    @param {Object} [request.headers={}]
      An object of additional header key/value pairs to send along
      with the request.
    @param {Object} [request.data={}]
      An object of request parameters.
    @param {String} [request.url]
      You can omit the first string argument and pass the URL as
      a `request` property instead.
    @return
      A promise for the response that is API-compatible with the
      promise returned by [`jQuery.ajax`](http://api.jquery.com/jquery.ajax/).
    @stable
     */
    ajax = function() {
      var args, forceCache, ignoreCache, options, pending, promise, request;
      args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      options = u.extractOptions(args);
      if (u.isGiven(args[0])) {
        options.url = args[0];
      }
      forceCache = options.cache === true;
      ignoreCache = options.cache === false;
      request = u.only(options, 'url', 'method', 'data', 'target', 'headers', '_normalized');
      request = normalizeRequest(request);
      pending = true;
      if (!isIdempotent(request) && !forceCache) {
        clear();
        promise = loadOrQueue(request);
      } else if ((promise = get(request)) && !ignoreCache) {
        up.puts('Re-using cached response for %s %s', request.method, request.url);
        pending = promise.state() === 'pending';
      } else {
        promise = loadOrQueue(request);
        set(request, promise);
        promise.fail(function() {
          return remove(request);
        });
      }
      if (pending && !options.preload) {
        loadStarted();
        promise.always(loadEnded);
      }
      return promise;
    };

    /**
    Returns whether the proxy is capable of caching the given request.
    Even if this returns `true`, only idempodent requests will be
    cached by default.
    
    @function up.proxy.isCachable
    @internal
     */
    isCachable = function(request) {
      return !u.isFormData(request.data);
    };

    /**
    Returns `true` if the proxy is not currently waiting
    for a request to finish. Returns `false` otherwise.
    
    @function up.proxy.isIdle
    @return {Boolean}
      Whether the proxy is idle
    @experimental
     */
    isIdle = function() {
      return pendingCount === 0;
    };

    /**
    Returns `true` if the proxy is currently waiting
    for a request to finish. Returns `false` otherwise.
    
    @function up.proxy.isBusy
    @return {Boolean}
      Whether the proxy is busy
    @experimental
     */
    isBusy = function() {
      return pendingCount > 0;
    };
    loadStarted = function() {
      var emission, wasIdle;
      wasIdle = isIdle();
      pendingCount += 1;
      if (wasIdle) {
        emission = function() {
          if (isBusy()) {
            up.emit('up:proxy:slow', {
              message: 'Proxy is busy'
            });
            return slowEventEmitted = true;
          }
        };
        return slowDelayTimer = u.setTimer(config.slowDelay, emission);
      }
    };

    /**
    This event is [emitted](/up.emit) when [AJAX requests](/up.ajax)
    are taking long to finish.
    
    By default Unpoly will wait 300 ms for an AJAX request to finish
    before emitting `up:proxy:slow`. You can configure this time like this:
    
        up.proxy.config.slowDelay = 150;
    
    Once all responses have been received, an [`up:proxy:recover`](/up:proxy:recover)
    will be emitted.
    
    Note that if additional requests are made while Unpoly is already busy
    waiting, **no** additional `up:proxy:slow` events will be triggered.
    
    
    \#\#\#\# Spinners
    
    You can [listen](/up.on) to the `up:proxy:slow`
    and [`up:proxy:recover`](/up:proxy:recover) events to implement a spinner
    that appears during a long-running request,
    and disappears once the response has been received:
    
        <div class="spinner">Please wait!</div>
    
    Here is the Javascript to make it alive:
    
        up.compiler('.spinner', function($element) {
    
          show = function() { $element.show() };
          hide = function() { $element.hide() };
    
          hide();
    
          return [
            up.on('up:proxy:slow', show),
            up.on('up:proxy:recover', hide)
          ];
    
        });
    
    The `up:proxy:slow` event will be emitted after a delay of 300 ms
    to prevent the spinner from flickering on and off.
    You can change (or remove) this delay by [configuring `up.proxy`](/up.proxy.config) like this:
    
        up.proxy.config.slowDelay = 150;
    
    
    @event up:proxy:slow
    @stable
     */
    loadEnded = function() {
      pendingCount -= 1;
      if (isIdle() && slowEventEmitted) {
        up.emit('up:proxy:recover', {
          message: 'Proxy is idle'
        });
        return slowEventEmitted = false;
      }
    };

    /**
    This event is [emitted]/(up.emit) when [AJAX requests](/up.ajax)
    have [taken long to finish](/up:proxy:slow), but have finished now.
    
    See [`up:proxy:slow`](/up:proxy:slow) for more documentation on
    how to use this event for implementing a spinner that shows during
    long-running requests.
    
    @event up:proxy:recover
    @stable
     */
    loadOrQueue = function(request) {
      if (pendingCount < config.maxRequests) {
        return load(request);
      } else {
        return queue(request);
      }
    };
    queue = function(request) {
      var deferred, entry;
      up.puts('Queuing request for %s %s', request.method, request.url);
      deferred = $.Deferred();
      entry = {
        deferred: deferred,
        request: request
      };
      queuedRequests.push(entry);
      return deferred.promise();
    };
    load = function(request) {
      var promise;
      up.emit('up:proxy:load', u.merge(request, {
        message: ['Loading %s %s', request.method, request.url]
      }));
      request = u.copy(request);
      request.headers || (request.headers = {});
      request.headers['X-Up-Target'] = request.target;
      if (u.contains(config.wrapMethods, request.method)) {
        request.data = u.appendRequestData(request.data, config.wrapMethodParam, request.method);
        request.method = 'POST';
      }
      if (u.isFormData(request.data)) {
        request.contentType = false;
        request.processData = false;
      }
      promise = $.ajax(request);
      promise.done(function(data, textStatus, xhr) {
        return responseReceived(request, xhr);
      });
      promise.fail(function(xhr, textStatus, errorThrown) {
        return responseReceived(request, xhr);
      });
      return promise;
    };
    responseReceived = function(request, xhr) {
      var ref;
      up.emit('up:proxy:received', u.merge(request, {
        message: ['Server responded with %s %s (%d bytes)', xhr.status, xhr.statusText, (ref = xhr.responseText) != null ? ref.length : void 0]
      }));
      return pokeQueue();
    };
    pokeQueue = function() {
      var entry, promise;
      if (entry = queuedRequests.shift()) {
        promise = load(entry.request);
        promise.done(function() {
          var args, ref;
          args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
          return (ref = entry.deferred).resolve.apply(ref, args);
        });
        promise.fail(function() {
          var args, ref;
          args = 1 <= arguments.length ? slice.call(arguments, 0) : [];
          return (ref = entry.deferred).reject.apply(ref, args);
        });
      }
    };

    /**
    Makes the proxy assume that `newRequest` has the same response as the
    already cached `oldRequest`.
    
    Unpoly uses this internally when the user redirects from `/old` to `/new`.
    In that case, both `/old` and `/new` will cache the same response from `/new`.
    
    @function up.proxy.alias
    @param {Object} oldRequest
    @param {Object} newRequest
    @experimental
     */
    alias = cache.alias;

    /**
    Manually stores a promise for the response to the given request.
    
    @function up.proxy.set
    @param {String} request.url
    @param {String} [request.method='GET']
    @param {String} [request.target='body']
    @param {Promise} response
      A promise for the response that is API-compatible with the
      promise returned by [`jQuery.ajax`](http://api.jquery.com/jquery.ajax/).
    @experimental
     */
    set = cache.set;

    /**
    Manually removes the given request from the cache.
    
    You can also [configure](/up.proxy.config) when the proxy
    automatically removes cache entries.
    
    @function up.proxy.remove
    @param {String} request.url
    @param {String} [request.method='GET']
    @param {String} [request.target='body']
    @experimental
     */
    remove = cache.remove;

    /**
    Removes all cache entries.
    
    Unpoly also automatically clears the cache whenever it processes
    a request with a non-GET HTTP method.
    
    @function up.proxy.clear
    @stable
     */
    clear = cache.clear;

    /**
    This event is [emitted]/(up.emit) before an [AJAX request](/up.ajax)
    is starting to load.
    
    @event up:proxy:load
    @param event.url
    @param event.method
    @param event.target
    @experimental
     */

    /**
    This event is [emitted]/(up.emit) when the response to an [AJAX request](/up.ajax)
    has been received.
    
    @event up:proxy:received
    @param event.url
    @param event.method
    @param event.target
    @experimental
     */
    isIdempotent = function(request) {
      normalizeRequest(request);
      return u.contains(config.safeMethods, request.method);
    };
    checkPreload = function($link) {
      var curriedPreload, delay;
      delay = parseInt(u.presentAttr($link, 'up-delay')) || config.preloadDelay;
      if (!$link.is($waitingLink)) {
        $waitingLink = $link;
        cancelPreloadDelay();
        curriedPreload = function() {
          preload($link);
          return $waitingLink = null;
        };
        return startPreloadDelay(curriedPreload, delay);
      }
    };
    startPreloadDelay = function(block, delay) {
      return preloadDelayTimer = setTimeout(block, delay);
    };

    /**
    @function up.proxy.preload
    @param {String|Element|jQuery}
      The element whose destination should be preloaded.
    @return
      A promise that will be resolved when the request was loaded and cached
    @experimental
     */
    preload = function(linkOrSelector, options) {
      var $link, method;
      $link = $(linkOrSelector);
      options = u.options(options);
      method = up.link.followMethod($link, options);
      if (isIdempotent({
        method: method
      })) {
        return up.log.group("Preloading link %o", $link, function() {
          options.preload = true;
          return up.follow($link, options);
        });
      } else {
        up.puts("Won't preload %o due to unsafe method %s", $link, method);
        return u.resolvedPromise();
      }
    };

    /**
    Links with an `up-preload` attribute will silently fetch their target
    when the user hovers over the click area, or when the user puts her
    mouse/finger down (before releasing). This way the
    response will already be cached when the user performs the click,
    making the interaction feel instant.   
    
    @selector [up-preload]
    @param [up-delay=75]
      The number of milliseconds to wait between hovering
      and preloading. Increasing this will lower the load in your server,
      but will also make the interaction feel less instant.
    @stable
     */
    up.on('mouseover mousedown touchstart', '[up-preload]', function(event, $element) {
      if (!up.link.childClicked(event, $element)) {
        return checkPreload($element);
      }
    });
    up.on('up:framework:reset', reset);
    return {
      preload: preload,
      ajax: ajax,
      get: get,
      alias: alias,
      clear: clear,
      remove: remove,
      isIdle: isIdle,
      isBusy: isBusy,
      isCachable: isCachable,
      config: config,
      defaults: function() {
        return up.fail('up.proxy.defaults(...) no longer exists. Set values on he up.proxy.config property instead.');
      }
    };
  })(jQuery);

  up.ajax = up.proxy.ajax;

}).call(this);

/**
Linking to page fragments
=========================

Standard HTML links are a poor fit for modern applications:

- State changes caused by AJAX updates get lost during the page transition.
- Unsaved form changes get lost during the page transition.
- The Javascript VM is reset during the page transition.
- If the page layout is composed from multiple srollable containers
  (e.g. a pane view), the scroll positions get lost during the page transition.
- The user sees a "flash" as the browser loads and renders the new page,
  even if large portions of the old and new page are the same (navigation, layout, etc.).

Unpoly fixes this by letting you annotate  links with an [`up-target`](/up-target)
attribute. The value of this attribute is a CSS selector that indicates which page
fragment to update. The rest of the page will remain unchanged.


Example
-------

Let's say we are rendering three pages with a tabbed navigation to switch between screens:


```
  /pages/a                /pages/b                /pages/c

+---+---+---+           +---+---+---+           +---+---+---+
| A | B | C |           | A | B | C |           | A | B | C |
|   +--------  (click)  +---+   +----  (click)  +---+---+   |
|           |  ======>  |           |  ======>  |           |
|  Page A   |           |  Page B   |           |  Page C   |
|           |           |           |           |           |
+-----------|           +-----------|           +-----------|
```

Your HTML could look like this:

```
<nav>
  <a href="/pages/a">A</a>
  <a href="/pages/b">B</a>
  <a href="/pages/b">C</a>
</nav>

<article>
  Page A
</article>
```

Since we only want to update the `<article>` tag, we annotate the links
with an `up-target` attribute:

```
<nav>
  <a href="/pages/a" up-target="article">A</a>
  <a href="/pages/b" up-target="article">B</a>
  <a href="/pages/b" up-target="article">C</a>
</nav>
```

Note that instead of `article` you can use any other CSS selector like `#main .article`.

With these [`up-target`](/up-target) annotations Unpoly only updates the targeted part of the screen.
The Javascript environment will persist and the user will not see a white flash while the
new page is loading.


Read on
-------
- You can [animate page transitions](/up.motion) by definining animations for fragments as they enter or leave the screen.
- The `up-target` mechanism also works with [forms](/up.form).
- As you switch through pages, Unpoly will [update your browser's location bar and history](/up.history)
- You can [open fragments in popups or modal dialogs](/up.modal).
- You can give users [immediate feedback](/up.navigation) when a link is clicked or becomes current, without waiting for the server.
- [Controlling Unpoly pragmatically through Javascript](/up.flow)
- [Defining custom tags](/up.syntax)

  
@class up.link
 */

(function() {
  up.link = (function($) {
    var allowDefault, childClicked, follow, followMethod, followVariantSelectors, isFollowable, makeFollowable, onAction, shouldProcessLinkEvent, u, visit;
    u = up.util;

    /**
    Visits the given URL without a full page load.
    This is done by fetching `url` through an AJAX request
    and replacing the current `<body>` element with the response's `<body>` element.
    
    For example, this would fetch the `/users` URL:
    
        up.visit('/users')
    
    @function up.visit
    @param {String} url
      The URL to visit.
    @param {String} [options.target='body']
      The selector to replace.
    @param {Object} [options]
      See options for [`up.replace`](/up.replace)
    @stable
     */
    visit = function(url, options) {
      var selector;
      options = u.options(options);
      selector = u.option(options.target, 'body');
      return up.replace(selector, url, options);
    };

    /**
    Follows the given link via AJAX and [replaces](/up.replace) a CSS selector in the current page
    with corresponding elements from a new page fetched from the server.
    
    Any Unpoly UJS attributes on the given link will be honored. E. g. you have this link:
    
        <a href="/users" up-target=".main">Users</a>
    
    You can update the page's `.main` selector with the `.main` from `/users` like this:
    
        var $link = $('a:first'); // select link with jQuery
        up.follow($link);
    
    The UJS variant of this are the [`a[up-target]`](/a-up-target) and [`a[up-follow]`](/a-up-follow) selectors.
    
    @function up.follow
    @param {Element|jQuery|String} linkOrSelector
      An element or selector which resolves to an `<a>` tag
      or any element that is marked up with an `up-href` attribute.
    @param {String} [options.target]
      The selector to replace.
      Defaults to the `up-target` attribute on `link`, or to `body` if such an attribute does not exist.
    @param {String} [options.failTarget]
      The selector to replace if the server responds with a non-200 status code.
      Defaults to the `up-fail-target` attribute on `link`, or to `body` if such an attribute does not exist.
    @param {String} [options.method='get']
      The HTTP method to use for the request.
    @param {String} [options.confirm]
      A message that will be displayed in a cancelable confirmation dialog
      before the link is followed.
    @param {Function|String} [options.transition]
      A transition function or name.
    @param {Number} [options.duration]
      The duration of the transition. See [`up.morph`](/up.morph).
    @param {Number} [options.delay]
      The delay before the transition starts. See [`up.morph`](/up.morph).
    @param {String} [options.easing]
      The timing function that controls the transition's acceleration. [`up.morph`](/up.morph).
    @param {Element|jQuery|String} [options.reveal]
      Whether to reveal the target  element within its viewport before updating.
    @param {Boolean} [options.restoreScroll]
      If set to `true`, this will attempt to [restore scroll positions](/up.restoreScroll)
      previously seen on the destination URL.
    @param {Boolean} [options.cache]
      Whether to force the use of a cached response (`true`)
      or never use the cache (`false`)
      or make an educated guess (`undefined`).
    @param {Object} [options.headers={}]
      An object of additional header key/value pairs to send along
      with the request.
    @param {String} [options.layer='auto']
      The name of the layer that ought to be updated. Valid values are
      `auto`, `page`, `modal` and `popup`.
    
      If set to `auto` (default), Unpoly will try to find a match in the
      same layer as the given link. If no match was found in that layer,
      Unpoly will search in other layers, starting from the topmost layer.
    @return {Promise}
      A promise that will be resolved when the link destination
      has been loaded and rendered.
    @stable
     */
    follow = function(linkOrSelector, options) {
      var $link, target, url;
      $link = $(linkOrSelector);
      options = u.options(options);
      url = u.option($link.attr('up-href'), $link.attr('href'));
      target = u.option(options.target, $link.attr('up-target'), 'body');
      options.failTarget = u.option(options.failTarget, $link.attr('up-fail-target'), 'body');
      options.transition = u.option(options.transition, u.castedAttr($link, 'up-transition'), 'none');
      options.failTransition = u.option(options.failTransition, u.castedAttr($link, 'up-fail-transition'), 'none');
      options.history = u.option(options.history, u.castedAttr($link, 'up-history'));
      options.reveal = u.option(options.reveal, u.castedAttr($link, 'up-reveal'), true);
      options.cache = u.option(options.cache, u.castedAttr($link, 'up-cache'));
      options.restoreScroll = u.option(options.restoreScroll, u.castedAttr($link, 'up-restore-scroll'));
      options.method = followMethod($link, options);
      options.origin = u.option(options.origin, $link);
      options.layer = u.option(options.layer, $link.attr('up-layer'), 'auto');
      options.confirm = u.option(options.confirm, $link.attr('up-confirm'));
      options = u.merge(options, up.motion.animateOptions(options, $link));
      return up.browser.whenConfirmed(options).then(function() {
        return up.replace(target, url, options);
      });
    };

    /**
    Returns the HTTP method that should be used when following the given link.
    
    Looks at the link's `up-method` or `data-method` attribute.
    Defaults to `"get"`.
    
    @function up.link.followMethod
    @param linkOrSelector
    @param options.method {String}
    @internal
     */
    followMethod = function(linkOrSelector, options) {
      var $link;
      $link = $(linkOrSelector);
      options = u.options(options);
      return u.option(options.method, $link.attr('up-method'), $link.attr('data-method'), 'get').toUpperCase();
    };

    /**
    @function up.link.childClicked
    @internal
     */
    childClicked = function(event, $link) {
      var $target, $targetLink;
      $target = $(event.target);
      $targetLink = $target.closest('a, [up-href]');
      return $targetLink.length && $link.find($targetLink).length;
    };
    shouldProcessLinkEvent = function(event, $link) {
      return u.isUnmodifiedMouseEvent(event) && !childClicked(event, $link);
    };
    followVariantSelectors = [];

    /**
    No-op that is called when we allow a browser's default action to go through,
    so we can spy on it in unit tests. See `link_spec.js`.
    
    @function allowDefault
    @internal
     */
    allowDefault = function(event) {};
    onAction = function(selector, handler) {
      var handlerWithActiveMark;
      followVariantSelectors.push(selector);
      handlerWithActiveMark = function($link) {
        return up.navigation.withActiveMark($link, {
          enlarge: true
        }, function() {
          return handler($link);
        });
      };
      up.on('click', "a" + selector + ", [up-href]" + selector, function(event, $link) {
        if (shouldProcessLinkEvent(event, $link)) {
          if ($link.is('[up-instant]')) {
            return event.preventDefault();
          } else {
            event.preventDefault();
            return handlerWithActiveMark($link);
          }
        } else {
          return allowDefault(event);
        }
      });
      return up.on('mousedown', "a" + selector + "[up-instant], [up-href]" + selector + "[up-instant]", function(event, $link) {
        if (shouldProcessLinkEvent(event, $link)) {
          event.preventDefault();
          return handlerWithActiveMark($link);
        }
      });
    };
    isFollowable = function($link) {
      return u.any(followVariantSelectors, function(selector) {
        return $link.is(selector);
      });
    };

    /**
    Makes sure that the given link is handled by Unpoly.
    
    This is done by giving the link an `up-follow` attribute
    unless it already have it an `up-target` or `up-follow` attribute.
    
    @function up.link.makeFollowable
    @internal
     */
    makeFollowable = function(link) {
      var $link;
      $link = $(link);
      if (!isFollowable($link)) {
        return $link.attr('up-follow', '');
      }
    };

    /**
    Follows this link via AJAX and replaces a CSS selector in the current page
    with corresponding elements from a new page fetched from the server:
    
        <a href="/posts/5" up-target=".main">Read post</a>
    
    \#\#\#\# Updating multiple fragments
    
    You can update multiple fragments from a single request by separating
    separators with a comma (like in CSS). E.g. if opening a post should
    also update a bubble showing the number of unread posts, you might
    do this:
    
        <a href="/posts/5" up-target=".main, .unread-count">Read post</a>
    
    \#\#\#\# Appending or prepending instead of replacing
    
    By default Unpoly will replace the given selector with the same
    selector from a freshly fetched page. Instead of replacing you
    can *append* the loaded content to the existing content by using the
    `:after` pseudo selector. In the same fashion, you can use `:before`
    to indicate that you would like the *prepend* the loaded content.
    
    A practical example would be a paginated list of items. Below the list is
    a button to load the next page. You can append to the existing list
    by using `:after` in the `up-target` selector like this:
    
        <ul class="tasks">
          <li>Wash car</li>
          <li>Purchase supplies</li>
          <li>Fix tent</li>
        </ul>
    
        <a href="/page/2" class="next-page" up-target=".tasks:after, .next-page">
          Load more tasks
        </a>
    
    \#\#\#\# Following elements that are no links
    
    You can also use `[up-target]` to turn an arbitrary element into a link.
    In this case, put the link's destination into the `up-href` attribute:
    
        <button up-target=".main" up-href="/foo/bar">Go</button>
    
    Note that using any element other than `<a>` will prevent users from
    opening the destination in a new tab.
    
    @selector a[up-target]
    @param {String} up-target
      The CSS selector to replace
    @param [up-fail-target='body']
      The selector to replace if the server responds with a non-200 status code.
    @param {String} [up-href]
      The destination URL to follow.
      If omitted, the the link's `href` attribute will be used.
    @param {String} [up-method='get']
      The HTTP method to use for the request.
    @param {String} [up-confirm]
      A message that will be displayed in a cancelable confirmation dialog
      before the link is followed.
    @param {String} [up-reveal='true']
      Whether to reveal the target element within its viewport before updating.
    @param {String} [up-restore-scroll='false']
      Whether to restore previously known scroll position of all viewports
      within the target selector.
    @param {String} [up-cache]
      Whether to force the use of a cached response (`true`)
      or never use the cache (`false`)
      or make an educated guess (default).
    @param {String} [up-layer='auto']
      The name of the layer that ought to be updated. Valid values are
      `auto`, `page`, `modal` and `popup`.
    
      If set to `auto` (default), Unpoly will try to find a match in the
      same layer as the given link. If no match was found in that layer,
      Unpoly will search in other layers, starting from the topmost layer.
    @param [up-history]
      Whether to push an entry to the browser history when following the link.
    
      Set this to `'false'` to prevent the URL bar from being updated.
      Set this to a URL string to update the history with the given URL.
    @stable
     */
    onAction('[up-target]', function($link) {
      return follow($link);
    });

    /**
    By adding an `up-instant` attribute to a link, the destination will be
    fetched on `mousedown` instead of `click` (`mouseup`).
    
        <a href="/users" up-target=".main" up-instant>User list</a>
    
    This will save precious milliseconds that otherwise spent
    on waiting for the user to release the mouse button. Since an
    AJAX request will be triggered right way, the interaction will
    appear faster.
    
    Note that using `[up-instant]` will prevent a user from canceling a link
    click by moving the mouse away from the interaction area. However, for
    navigation actions this isn't needed. E.g. popular operation
    systems switch tabs on `mousedown` instead of `click`.
    
    `up-instant` will also work for links that open [modals](/up.modal) or [popups](/up.popup).
    
    @selector [up-instant]
    @stable
     */

    /**
    If applied on a link, Follows this link via AJAX and replaces the
    current `<body>` element with the response's `<body>` element.
    
    To only update a fragment instead of the entire page, see
    [`a[up-target]`](/a-up-target).
    
    \#\#\#\# Example
    
        <a href="/users" up-follow>User list</a>
    
    \#\#\#\# Turn any element into a link
    
    You can also use `[up-follow]` to turn an arbitrary element into a link.
    In this case, put the link's destination into the `up-href` attribute:
    
        <span up-follow up-href="/foo/bar">Go</span>
    
    Note that using any element other than `<a>` will prevent users from
    opening the destination in a new tab.
    
    @selector a[up-follow]
    @param [up-fail-target='body']
      The selector to replace if the server responds with a non-200 status code.
    @param [up-href]
      The destination URL to follow.
      If omitted, the the link's `href` attribute will be used.
    @param {String} [up-method='get']
      The HTTP method to use for the request.
    @param {String} [up-confirm]
      A message that will be displayed in a cancelable confirmation dialog
      before the link is followed.
    @param {String} [up-history]
      Whether to push an entry to the browser history when following the link.
    
      Set this to `'false'` to prevent the URL bar from being updated.
      Set this to a URL string to update the history with the given URL.
    @param [up-restore-scroll='false']
      Whether to restore the scroll position of all viewports
      within the response.
    @stable
     */
    onAction('[up-follow]', function($link) {
      return follow($link);
    });

    /**
    Marks up the current link to be followed *as fast as possible*.
    
    This is done by:
    
    - [Following the link through AJAX](/up-target) instead of a full page load
    - [Preloading the link's destination URL](/up-preload)
    - [Triggering the link on `mousedown`](/up-instant) instead of on `click`
    
    Use `up-dash` like this:
    
        <a href="/users" up-dash=".main">User list</a>
    
    Note that this is shorthand for:
    
        <a href="/users" up-target=".main" up-instant up-preload>User list</a>
    
    @selector [up-dash]
    @stable
     */
    up.macro('[up-dash]', {
      priority: 'last'
    }, function($element) {
      var newAttrs, target;
      target = u.castedAttr($element, 'up-dash');
      $element.removeAttr('up-dash');
      newAttrs = {
        'up-preload': '',
        'up-instant': ''
      };
      if (target === true) {
        makeFollowable($element);
      } else {
        newAttrs['up-target'] = target;
      }
      return u.setMissingAttrs($element, newAttrs);
    });

    /**
    Add an `up-expand` class to any element that contains a link
    in order to enlarge the link's click area.
    
    `up-expand` honors all the UJS behavior in expanded links
    ([`up-target`](/up-target), [`up-instant`](/up-instant), [`up-preload`](/up-preload), etc.).
    
    \#\#\#\# Example
    
        <div class="notification" up-expand>
          Record was saved!
          <a href="/records">Close</a>
        </div>
    
    In the example above, clicking anywhere within `.notification` element
    would [follow](/up.follow) the *Close* link.
    
    `up-expand` also expands links that open [modals](/up.modal) or [popups](/up.popup).
    
    \#\#\#\# Elements with multiple contained links
    
    If a container contains more than one link, you can set the value of the
    `up-expand` attribute to a CSS selector to define which link should be expanded:
    
        <div class="notification" up-expand=".close">
          Record was saved!
          <a class="details" href="/records/5">Details</a>
          <a class="close" href="/records">Close</a>
        </div>
    
    @selector [up-expand]
    @param {String} [up-expand]
      A CSS selector that defines which containing link should be expanded.
    
      If omitted, the first contained link will be expanded.
    @stable
     */
    up.macro('[up-expand]', {
      priority: 'last'
    }, function($area) {
      var $childLinks, attribute, i, len, link, name, newAttrs, ref, selector, upAttributePattern;
      $childLinks = $area.find('a, [up-href]');
      if (selector = $area.attr('up-expand')) {
        $childLinks = $childLinks.filter(selector);
      }
      if (link = $childLinks.get(0)) {
        upAttributePattern = /^up-/;
        newAttrs = {};
        newAttrs['up-href'] = $(link).attr('href');
        ref = link.attributes;
        for (i = 0, len = ref.length; i < len; i++) {
          attribute = ref[i];
          name = attribute.name;
          if (name.match(upAttributePattern)) {
            newAttrs[name] = attribute.value;
          }
        }
        u.setMissingAttrs($area, newAttrs);
        $area.removeAttr('up-expand');
        return makeFollowable($area);
      }
    });
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      visit: visit,
      follow: follow,
      makeFollowable: makeFollowable,
      shouldProcessLinkEvent: shouldProcessLinkEvent,
      childClicked: childClicked,
      followMethod: followMethod,
      onAction: onAction
    };
  })(jQuery);

  up.visit = up.link.visit;

  up.follow = up.link.follow;

}).call(this);

/**
Forms
=====
  
Unpoly comes with functionality to [submit](/form-up-target) and [validate](/up-validate)
forms without leaving the current page. This means you can replace page fragments,
open dialogs with sub-forms, etc. all without losing form state.

@class up.form
 */

(function() {
  var slice = [].slice;

  up.form = (function($) {
    var autosubmit, config, currentValuesForSwitch, observe, observeField, reset, resolveValidateTarget, submit, switchTargets, u, validate;
    u = up.util;

    /**
    Sets default options for form submission and validation.
    
    @property up.form.config
    @param {Number} [config.observeDelay=0]
      The number of miliseconds to wait before [`up.observe`](/up.observe) runs the callback
      after the input value changes. Use this to limit how often the callback
      will be invoked for a fast typist.
    @param {Array} [config.validateTargets=['[up-fieldset]:has(&)', 'fieldset:has(&)', 'label:has(&)', 'form:has(&)']]
      An array of CSS selectors that are searched around a form field
      that wants to [validate](/up.validate). The first matching selector
      will be updated with the validation messages from the server.
    
      By default this looks for a `<fieldset>`, `<label>` or `<form>`
      around the validating input field, or any element with an
      `up-fieldset` attribute.
    @param {String} [config.fields=[':input']]
      An array of CSS selectors that represent form fields, such as `input` or `select`.
    @stable
     */
    config = u.config({
      validateTargets: ['[up-fieldset]:has(&)', 'fieldset:has(&)', 'label:has(&)', 'form:has(&)'],
      fields: [':input'],
      observeDelay: 0
    });
    reset = function() {
      return config.reset();
    };

    /**
    Submits a form via AJAX and updates a page fragment with the response.
    
        up.submit('form.new-user', { target: '.main' })
    
    Instead of loading a new page, the form is submitted via AJAX.
    The response is parsed for a CSS selector and the matching elements will
    replace corresponding elements on the current page.
    
    The UJS variant of this is the [`form[up-target]`](/form-up-target) selector.
    See the documentation for [`form[up-target]`](/form-up-target) for more
    information on how AJAX form submissions work in Unpoly.
    
    @function up.submit
    @param {Element|jQuery|String} formOrSelector
      A reference or selector for the form to submit.
      If the argument points to an element that is not a form,
      Unpoly will search its ancestors for the closest form.
    @param {String} [options.url]
      The URL where to submit the form.
      Defaults to the form's `action` attribute, or to the current URL of the browser window.
    @param {String} [options.method='post']
      The HTTP method used for the form submission.
      Defaults to the form's `up-method`, `data-method` or `method` attribute, or to `'post'`
      if none of these attributes are given.
    @param {String} [options.target]
      The selector to update when the form submission succeeds (server responds with status 200).
      Defaults to the form's `up-target` attribute, or to `'body'`.
    @param {String} [options.failTarget]
      The selector to update when the form submission fails (server responds with non-200 status).
      Defaults to the form's `up-fail-target` attribute, or to an auto-generated
      selector that matches the form itself.
    @param {Boolean|String} [options.history=true]
      Successful form submissions will add a history entry and change the browser's
      location bar if the form either uses the `GET` method or the response redirected
      to another page (this requires the `unpoly-rails` gem).
      If you want to prevent history changes in any case, set this to `false`.
      If you pass a `String`, it is used as the URL for the browser history.
    @param {String} [options.transition='none']
      The transition to use when a successful form submission updates the `options.target` selector.
      Defaults to the form's `up-transition` attribute, or to `'none'`.
    @param {String} [options.failTransition='none']
      The transition to use when a failed form submission updates the `options.failTarget` selector.
      Defaults to the form's `up-fail-transition` attribute, or to `options.transition`, or to `'none'`.
    @param {Number} [options.duration]
      The duration of the transition. See [`up.morph`](/up.morph).
    @param {Number} [options.delay]
      The delay before the transition starts. See [`up.morph`](/up.morph).
    @param {String} [options.easing]
      The timing function that controls the transition's acceleration. [`up.morph`](/up.morph).
    @param {Element|jQuery|String} [options.reveal]
      Whether to reveal the target element within its viewport.
    @param {Boolean} [options.restoreScroll]
      If set to `true`, this will attempt to [`restore scroll positions`](/up.restoreScroll)
      previously seen on the destination URL.
    @param {Boolean} [options.cache]
      Whether to force the use of a cached response (`true`)
      or never use the cache (`false`)
      or make an educated guess (`undefined`).
    
      By default only responses to `GET` requests are cached
      for a few minutes.
    @param {Object} [options.headers={}]
      An object of additional header key/value pairs to send along
      with the request.
    @return {Promise}
      A promise for the successful form submission.
    @stable
     */
    submit = function(formOrSelector, options) {
      var $form, canAjaxSubmit, canHistoryOption, hasFileInputs, promise, target, url;
      $form = $(formOrSelector).closest('form');
      options = u.options(options);
      target = u.option(options.target, $form.attr('up-target'), 'body');
      url = u.option(options.url, $form.attr('action'), up.browser.url());
      options.failTarget = u.option(options.failTarget, $form.attr('up-fail-target')) || u.selectorForElement($form);
      options.history = u.option(options.history, u.castedAttr($form, 'up-history'), true);
      options.transition = u.option(options.transition, u.castedAttr($form, 'up-transition'), 'none');
      options.failTransition = u.option(options.failTransition, u.castedAttr($form, 'up-fail-transition'), 'none');
      options.method = u.option(options.method, $form.attr('up-method'), $form.attr('data-method'), $form.attr('method'), 'post').toUpperCase();
      options.headers = u.option(options.headers, {});
      options.reveal = u.option(options.reveal, u.castedAttr($form, 'up-reveal'), true);
      options.cache = u.option(options.cache, u.castedAttr($form, 'up-cache'));
      options.restoreScroll = u.option(options.restoreScroll, u.castedAttr($form, 'up-restore-scroll'));
      options.origin = u.option(options.origin, $form);
      options.layer = u.option(options.layer, $form.attr('up-layer'), 'auto');
      options.data = up.util.requestDataFromForm($form);
      options = u.merge(options, up.motion.animateOptions(options, $form));
      hasFileInputs = $form.find('input[type=file]').length;
      canAjaxSubmit = !hasFileInputs || u.isFormData(options.data);
      canHistoryOption = up.browser.canPushState() || options.history === false;
      if (options.validate) {
        options.headers || (options.headers = {});
        options.transition = false;
        options.failTransition = false;
        options.headers['X-Up-Validate'] = options.validate;
        if (!canAjaxSubmit) {
          return u.unresolvablePromise();
        }
      }
      up.navigation.markActive($form);
      if (!(canAjaxSubmit && canHistoryOption)) {
        $form.get(0).submit();
        return u.unresolvablePromise();
      }
      promise = up.replace(target, url, options);
      promise.always(function() {
        return up.navigation.unmarkActive($form);
      });
      return promise;
    };

    /**
    Observes form fields and runs a callback when a value changes.
    
    This is useful for observing text fields while the user is typing.
    
    The UJS variant of this is the [`up-observe`](/up-observe) attribute.
    
    \#\#\#\# Example
    
    The following would submit the form whenever the
    text field value changes:
    
        up.observe('input[name=query]', function(value, $input) {
          console.log('Query is now ' + value);
        });
    
    Instead of a single form field, you can also
    pass, a `<form>` or any container that contains form fields.
    The callback will be run if any of the given fields change.
    
    \#\#\#\# Preventing concurrency
    
    Firing asynchronous code after a form field can cause
    [concurrency issues](https://makandracards.com/makandra/961-concurrency-issues-with-find-as-you-type-boxes).
    
    To mitigate this, `up.observe` will try to never run a callback
    before the previous callback has completed.
    To take advantage of this, your callback code must return a promise.
    Note that all asynchronous Unpoly functions return promises.
    
    \#\#\#\# Throttling
    
    If you are concerned about fast typists causing too much
    load on your server, you can use a `delay` option to wait
    a few miliseconds before executing the callback:
    
        up.observe('input', { delay: 100 }, function(value, $input) {
          up.submit($input)
        });
    
    @function up.observe
    @param {Element|jQuery|String} selectorOrElement
      The form fields that wiill be observed.
    
      You can pass one or more fields, a `<form>` or any container that contains form fields.
      The callback will be run if any of the given fields change.
    @param {Number} [options.delay=up.form.config.observeDelay]
      The number of miliseconds to wait before executing the callback
      after the input value changes. Use this to limit how often the callback
      will be invoked for a fast typist.
    @param {Function(value, $field)|String} onChange
      The callback to run when the field's value changes.
      If given as a function, it must take two arguments (`value`, `$field`).
      If given as a string, it will be evaled as Javascript code in a context where
      (`value`, `$field`) are set.
    @return {Function}
      A destructor function that removes the observe watch when called.
    @stable
     */
    observe = function() {
      var $element, $fields, callback, callbackArg, delay, destructors, extraArgs, options, rawCallback, selectorOrElement;
      selectorOrElement = arguments[0], extraArgs = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      options = {};
      callbackArg = void 0;
      if (extraArgs.length === 1) {
        callbackArg = extraArgs[0];
      } else if (extraArgs.length > 1) {
        options = u.options(extraArgs[0]);
        callbackArg = extraArgs[1];
      }
      $element = $(selectorOrElement);
      $fields = u.multiSelector(config.fields).findWithSelf($element);
      callback = null;
      rawCallback = u.option(callbackArg, u.presentAttr($fields, 'up-observe'));
      if (u.isString(rawCallback)) {
        callback = function(value, $field) {
          return eval(rawCallback);
        };
      } else {
        callback = rawCallback || up.fail('up.observe: No change callback given');
      }
      delay = u.option($fields.attr('up-delay'), options.delay, config.observeDelay);
      delay = parseInt(delay);
      destructors = u.map($fields, function(field) {
        return observeField($(field), options, callback);
      });
      return u.sequence.apply(u, destructors);
    };
    observeField = function($field, delay, callback) {
      var callbackPromise, callbackTimer, changeEvents, check, clearTimer, knownValue, nextCallback, runNextCallback;
      knownValue = null;
      callbackTimer = null;
      callbackPromise = u.resolvedPromise();
      nextCallback = null;
      runNextCallback = function() {
        var returnValue;
        if (nextCallback) {
          returnValue = nextCallback();
          nextCallback = null;
          return returnValue;
        }
      };
      check = function() {
        var runAndChain, skipCallback, value;
        value = u.submittedValue($field);
        skipCallback = u.isNull(knownValue);
        if (knownValue !== value) {
          knownValue = value;
          if (!skipCallback) {
            clearTimer();
            nextCallback = function() {
              return callback.apply($field.get(0), [value, $field]);
            };
            runAndChain = function() {
              return callbackPromise.then(function() {
                var returnValue;
                returnValue = runNextCallback();
                if (u.isPromise(returnValue)) {
                  return callbackPromise = returnValue;
                } else {
                  return callbackPromise = u.resolvedPromise();
                }
              });
            };
            return u.setTimer(delay, runAndChain);
          }
        }
      };
      clearTimer = function() {
        return clearTimeout(callbackTimer);
      };
      changeEvents = 'input change';
      if (!up.browser.canInputEvent()) {
        changeEvents += ' keypress paste cut click propertychange';
      }
      $field.on(changeEvents, check);
      check();
      return function() {
        $field.off(changeEvents, check);
        return clearTimer();
      };
    };

    /**
    [Observes](/up.observe) a field or form and submits the form when a value changes.
    
    The changed form field will be assigned a CSS class [`up-active`](/up-active)
    while the autosubmitted form is processing.
    
    The UJS variant of this is the [`up-autosubmit`](/up-autosubmit) attribute.
    
    @function up.autosubmit
    @param {String|Element|jQuery} selectorOrElement
      The field or form to observe.
    @param {Object} [options]
      See options for [`up.observe`](/up.observe)
    @return {Function}
      A destructor function that removes the observe watch when called.
    @stable
     */
    autosubmit = function(selectorOrElement, options) {
      return observe(selectorOrElement, options, function(value, $field) {
        var $form;
        $form = $field.closest('form');
        return up.navigation.withActiveMark($field, function() {
          return submit($form);
        });
      });
    };
    resolveValidateTarget = function($field, options) {
      var target;
      target = u.option(options.target, $field.attr('up-validate'));
      if (u.isBlank(target)) {
        target || (target = u.detect(config.validateTargets, function(defaultTarget) {
          var resolvedDefault;
          resolvedDefault = up.flow.resolveSelector(defaultTarget, options.origin);
          return $field.closest(resolvedDefault).length;
        }));
      }
      if (u.isBlank(target)) {
        up.fail('Could not find default validation target for %o (tried ancestors %o)', $field.get(0), config.validateTargets);
      }
      if (!u.isString(target)) {
        target = u.selectorForElement(target);
      }
      return target;
    };

    /**
    Performs a server-side validation of a form and update the form
    with validation messages.
    
    `up.validate` submits the given field's form with an additional `X-Up-Validate`
    HTTP header. Upon seeing this header, the server is expected to validate (but not save)
    the form submission and render a new copy of the form with validation errors.
    
    The UJS variant of this is the [`[up-validate]`](/up-validate) selector.
    See the documentation for [`[up-validate]`](/up-validate) for more information
    on how server-side validation works in Unpoly.
    
    \#\#\#\# Example
    
        up.validate('input[name=email]', { target: '.email-errors' })
    
    @function up.validate
    @param {String|Element|jQuery} fieldOrSelector
    @param {String|Element|jQuery} [options.target]
    @return {Promise}
      A promise that is resolved when the server-side
      validation is received and the form was updated.
    @stable
     */
    validate = function(fieldOrSelector, options) {
      var $field, $form, promise;
      $field = $(fieldOrSelector);
      options = u.options(options);
      options.origin = $field;
      options.target = resolveValidateTarget($field, options);
      options.failTarget = options.target;
      options.history = false;
      options.headers = u.option(options.headers, {});
      options.validate = $field.attr('name') || '__none__';
      options = u.merge(options, up.motion.animateOptions(options, $field));
      $form = $field.closest('form');
      promise = up.submit($form, options);
      return promise;
    };
    currentValuesForSwitch = function($field) {
      var $checkedButton, value, values;
      values = void 0;
      if ($field.is('input[type=checkbox]')) {
        if ($field.is(':checked')) {
          values = [':checked', ':present', $field.val()];
        } else {
          values = [':unchecked', ':blank'];
        }
      } else if ($field.is('input[type=radio]')) {
        $checkedButton = $field.closest('form, body').find("input[type='radio'][name='" + ($field.attr('name')) + "']:checked");
        if ($checkedButton.length) {
          values = [':checked', ':present', $checkedButton.val()];
        } else {
          values = [':unchecked', ':blank'];
        }
      } else {
        value = $field.val();
        if (u.isPresent(value)) {
          values = [':present', value];
        } else {
          values = [':blank'];
        }
      }
      return values;
    };
    currentValuesForSwitch = function($field) {
      var $checkedButton, meta, value, values;
      if ($field.is('input[type=checkbox]')) {
        if ($field.is(':checked')) {
          value = $field.val();
          meta = ':checked';
        } else {
          meta = ':unchecked';
        }
      } else if ($field.is('input[type=radio]')) {
        $checkedButton = $field.closest('form, body').find("input[type='radio'][name='" + ($field.attr('name')) + "']:checked");
        if ($checkedButton.length) {
          meta = ':checked';
          value = $checkedButton.val();
        } else {
          meta = ':unchecked';
        }
      } else {
        value = $field.val();
      }
      values = [];
      if (u.isPresent(value)) {
        values.push(value);
        values.push(':present');
      } else {
        values.push(':blank');
      }
      if (u.isPresent(meta)) {
        values.push(meta);
      }
      return values;
    };

    /**
    Shows or hides a target selector depending on the value.
    
    See [`[up-switch]`](/up-switch) for more documentation and examples.
    
    This function does not currently have a very useful API outside
    of our use for `up-switch`'s UJS behavior, that's why it's currently
    still marked `@internal`.
    
    @function up.form.switchTargets
    @param {String|Element|jQuery} fieldOrSelector
    @param {String} [options.target]
      The target selectors to switch.
      Defaults to an `up-switch` attribute on the given field.
    @internal
     */
    switchTargets = function(fieldOrSelector, options) {
      var $field, fieldValues, targets;
      $field = $(fieldOrSelector);
      options = u.options(options);
      targets = u.option(options.target, $field.attr('up-switch'));
      u.isPresent(targets) || up.fail("No switch target given for %o", $field.get(0));
      fieldValues = currentValuesForSwitch($field);
      return $(targets).each(function() {
        var $target, hideValues, show, showValues;
        $target = $(this);
        if (hideValues = $target.attr('up-hide-for')) {
          hideValues = hideValues.split(' ');
          show = u.intersect(fieldValues, hideValues).length === 0;
        } else {
          if (showValues = $target.attr('up-show-for')) {
            showValues = showValues.split(' ');
          } else {
            showValues = [':present', ':checked'];
          }
          show = u.intersect(fieldValues, showValues).length > 0;
        }
        return $target.toggle(show);
      });
    };

    /**
    Forms with an `up-target` attribute are [submitted via AJAX](/up.submit)
    instead of triggering a full page reload.
    
        <form method="post" action="/users" up-target=".main">
          ...
        </form>
    
    The server response is searched for the selector given in `up-target`.
    The selector content is then [replaced](/up.replace) in the current page.
    
    The programmatic variant of this is the [`up.submit`](/up.submit) function.
    
    \#\#\#\# Failed submission
    
    When the server was unable to save the form due to invalid data,
    it will usually re-render an updated copy of the form with
    validation messages.
    
    For Unpoly to be able to detect a failed form submission,,
    the form must be re-rendered with a non-200 HTTP status code.
    We recommend to use either 400 (bad request) or
    422 (unprocessable entity).
    
    In Ruby on Rails, you can pass a
    [`:status` option to `render`](http://guides.rubyonrails.org/layouts_and_rendering.html#the-status-option)
    for this:
    
        class UsersController < ApplicationController
    
          def create
            user_params = params[:user].permit(:email, :password)
            @user = User.new(user_params)
            if @user.save?
              sign_in @user
            else
              render 'form', status: :bad_request
            end
          end
    
        end
    
    Note that you can also use the
    [`up-validate`](/up-validate) attribute to perform server-side
    validations while the user is completing fields.
    
    \#\#\#\# Redirects
    
    Unpoly requires two additional response headers to detect redirects,
    which are otherwise undetectable for an AJAX client.
    
    When the form's action performs a redirect, the server should echo
    the new request's URL as a response header `X-Up-Location`
    and the request's HTTP method as `X-Up-Method: GET`.
    
    If you are using Unpoly via the `unpoly-rails` gem, these headers
    are set automatically for every request.
    
    \#\#\#\# Giving feedback while the form is processing
    
    The `<form>` element will be assigned a CSS class `up-active` while
    the submission is loading.
    
    You can also [implement a spinner](/up.proxy/#spinners)
    by [listening](/up.on) to the [`up:proxy:slow`](/up:proxy:slow)
    and [`up:proxy:recover`](/up:proxy:recover) events.
    
    @selector form[up-target]
    @param {String} up-target
      The selector to [replace](/up.replace) if the form submission is successful (200 status code).
    @param {String} [up-fail-target]
      The selector to [replace](/up.replace) if the form submission is not successful (non-200 status code).
      If omitted, Unpoly will replace the `<form>` tag itself, assuming that the
      server has echoed the form with validation errors.
    @param {String} [up-transition]
      The animation to use when the form is replaced after a successful submission.
    @param {String} [up-fail-transition]
      The animation to use when the form is replaced after a failed submission.
    @param [up-history]
      Whether to push a browser history entry after a successful form submission.
    
      By default the form's target URL is used. If the form redirects to another URL,
      the redirect target will be used.
    
      Set this to `'false'` to prevent the URL bar from being updated.
      Set this to a URL string to update the history with the given URL.
    @param {String} [up-method]
      The HTTP method to be used to submit the form (`get`, `post`, `put`, `delete`, `patch`).
      Alternately you can use an attribute `data-method`
      ([Rails UJS](https://github.com/rails/jquery-ujs/wiki/Unobtrusive-scripting-support-for-jQuery))
      or `method` (vanilla HTML) for the same purpose.
    @param {String} [up-reveal='true']
      Whether to reveal the target element within its viewport before updating.
    @param {String} [up-restore-scroll='false']
      Whether to restore previously known scroll position of all viewports
      within the target selector.
    @param {String} [up-cache]
      Whether to force the use of a cached response (`true`)
      or never use the cache (`false`)
      or make an educated guess (`undefined`).
    
      By default only responses to `GET` requests are cached for a few minutes.
    @stable
     */
    up.on('submit', 'form[up-target]', function(event, $form) {
      event.preventDefault();
      return submit($form);
    });

    /**
    When a form field with this attribute is changed,
    the form is validated on the server and is updated with
    validation messages.
    
    The programmatic variant of this is the [`up.validate`](/up.validate) function.
    
    \#\#\#\# Example
    
    Let's look at a standard registration form that asks for an e-mail and password:
    
        <form action="/users">
    
          <label>
            E-mail: <input type="text" name="email" />
          </label>
    
          <label>
            Password: <input type="password" name="password" />
          </label>
    
          <button type="submit">Register</button>
    
        </form>
    
    When the user changes the `email` field, we want to validate that
    the e-mail address is valid and still available. Also we want to
    change the `password` field for the minimum required password length.
    We can do this by giving both fields an `up-validate` attribute:
    
        <form action="/users">
    
          <label>
            E-mail: <input type="text" name="email" up-validate />
          </label>
    
          <label>
            Password: <input type="password" name="password" up-validate />
          </label>
    
          <button type="submit">Register</button>
    
        </form>
    
    Whenever a field with `up-validate` changes, the form is POSTed to
    `/users` with an additional `X-Up-Validate` HTTP header.
    Upon seeing this header, the server is expected to validate (but not save)
    the form submission and render a new copy of the form with validation errors.
    
    In Ruby on Rails the processing action should behave like this:
    
        class UsersController < ApplicationController
    
           * This action handles POST /users
          def create
            user_params = params[:user].permit(:email, :password)
            @user = User.new(user_params)
            if request.headers['X-Up-Validate']
              @user.valid?  # run validations, but don't save to the database
              render 'form' # render form with error messages
            elsif @user.save?
              sign_in @user
            else
              render 'form', status: :bad_request
            end
          end
    
        end
    
    Note that if you're using the `unpoly-rails` gem you can simply say `up.validate?`
    instead of manually checking for `request.headers['X-Up-Validate']`.
    
    The server now renders an updated copy of the form with eventual validation errors:
    
        <form action="/users">
    
          <label class="has-error">
            E-mail: <input type="text" name="email" value="foo@bar.com" />
            Has already been taken!
          </label>
    
          <button type="submit">Register</button>
    
        </form>
    
    The `<label>` around the e-mail field is now updated to have the `has-error`
    class and display the validation message.
    
    \#\#\#\# How validation results are displayed
    
    Although the server will usually respond to a validation with a complete,
    fresh copy of the form, Unpoly will by default not update the entire form.
    This is done in order to preserve volatile state such as the scroll position
    of `<textarea>` elements.
    
    By default Unpoly looks for a `<fieldset>`, `<label>` or `<form>`
    around the validating input field, or any element with an
    `up-fieldset` attribute.
    With the Bootstrap bindings, Unpoly will also look
    for a container with the `form-group` class.
    
    You can change this default behavior by setting `up.config.validateTargets`:
    
        // Always update the entire form containing the current field ("&")
        up.form.config.validateTargets = ['form &']
    
    You can also individually override what to update by setting the `up-validate`
    attribute to a CSS selector:
    
        <input type="text" name="email" up-validate=".email-errors">
        <span class="email-errors"></span>
    
    \#\#\#\# Updating dependent fields
    
    The `[up-validate]` behavior is also a great way to partially update a form
    when one fields depends on the value of another field.
    
    Let's say you have a form with one `<select>` to pick a department (sales, engineering, ...)
    and another `<select>` to pick an employeee from the selected department:
    
        <form action="/contracts">
          <select name="department">...</select> <!-- options for all departments -->
          <select name="employeed">...</select> <!-- options for employees of selected department -->
        </form>
    
    The list of employees needs to be updated as the appartment changes:
    
        <form action="/contracts">
          <select name="department" up-validate="[name=employee]">...</select>
          <select name="employee">...</select>
        </form>
    
    In order to update the `department` field in addition to the `employee` field, you could say
    `up-validate="&, [name=employee]"`, or simply `up-validate="form"` to update the entire form.
    
    @selector [up-validate]
    @param {String} up-validate
      The CSS selector to update with the server response.
    
      This defaults to a fieldset or form group around the validating field.
    @stable
     */
    up.on('change', '[up-validate]', function(event, $field) {
      return validate($field);
    });

    /**
    Show or hide part of a form if certain options are selected or boxes are checked.
    
    \#\#\#\# Example
    
    The triggering input gets an `up-switch` attribute with a selector for the elements to show or hide:
    
        <select name="advancedness" up-switch=".target">
          <option value="basic">Basic parts</option>
          <option value="advanced">Advanced parts</option>
          <option value="very-advanced">Very advanced parts</option>
        </select>
    
    The target elements get a space-separated list of select values for which they are shown or hidden:
    
        <div class="target" up-show-for="basic">
          only shown for advancedness = basic
        </div>
    
        <div class="target" up-hide-for="basic">
          hidden for advancedness = basic
        </div>
    
        <div class="target" up-show-for="advanced very-advanced">
          shown for advancedness = advanced or very-advanced
        </div>
    
    For checkboxes you can also use the pseudo-values `:checked` or `:unchecked` like so:
    
        <input type="checkbox" name="flag" up-switch=".target">
    
        <div class="target" up-show-for=":checked">
          only shown when checkbox is checked
        </div>
    
    You can also use the pseudo-values `:blank` to match an empty input value,
    or `:present` to match a non-empty input value:
    
        <input type="text" name="email" up-switch=".target">
    
        <div class="target" up-show-for=":blank">
          please enter an email address
        </div>
    
    @selector [up-switch]
    @stable
     */

    /**
    Show this element only if a form field has a given value.
    
    See [`[up-switch]`](/up-switch) for more documentation and examples.
    
    @selector [up-show-for]
    @param up-show-for
      A space-separated list of values for which to show this element.
    @stable
     */

    /**
    Hide this element if a form field has a given value.
    
    See [`[up-switch]`](/up-switch) for more documentation and examples.
    
    @selector [up-hide-for]
    @param up-hide-for
      A space-separated list of values for which to hide this element.
    @stable
     */
    up.on('change', '[up-switch]', function(event, $field) {
      return switchTargets($field);
    });
    up.compiler('[up-switch]', function($field) {
      return switchTargets($field);
    });

    /**
    Observes this field or form and runs a callback when a value changes.
    
    This is useful for observing text fields while the user is typing.
    
    The programmatic variant of this is the [`up.observe`](/up.observe) function.
    
    \#\#\#\# Example
    
    The following would run a global `showSuggestions(value)` function
    whenever the `<input>` changes:
    
        <form>
          <input type="query" up-observe="showSuggestions(value)">
        </form>
    
    \#\#\#\# Callback context
    
    The script given to `up-observe` runs with the following context:
    
    | Name     | Type      | Description                           |
    | -------- | --------- | ------------------------------------- |
    | `value`  | `String`  | The current value of the field        |
    | `this`   | `Element` | The form field                        |
    | `$field` | `jQuery`  | The form field as a jQuery collection |
    
    @selector [up-observe]
    @param {String} up-observe
      The code to run when the field's value changes.
    @param {String} up-delay
      The number of miliseconds to wait after a change before the code is run.
    @stable
     */
    up.compiler('[up-observe]', function($formOrField) {
      return observe($formOrField);
    });

    /**
    [Observes](/up.observe) this field or form and submits the form when a value changes.
    
    The form field will be assigned a CSS class [`up-active`](/up-active)
    while the autosubmitted form is processing.
    
    The programmatic variant of this is the [`up.autosubmit`](/up.autosubmit) function.
    
    \#\#\#\# Example
    
    The following would submit the form whenever the
    text field value changes:
    
        <form method="GET" action="/search" up-autosubmit>
          <input type="search" name="query">
        </form>
    
    The following would submit the form only if the query was changed,
    but not if the checkbox was changed:
    
        <form method="GET" action="/search">
          <input type="search" name="query" autosubmit>
          <input type="checkbox"> Include archive
        </form>
    
    @selector [up-autosubmit]
    @param {String} up-delay
      The number of miliseconds to wait after the change before the form is submitted.
    @stable
     */
    up.compiler('[up-autosubmit]', function($formOrField) {
      return autosubmit($formOrField);
    });
    up.on('up:framework:reset', reset);
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      config: config,
      submit: submit,
      observe: observe,
      validate: validate,
      switchTargets: switchTargets,
      autosubmit: autosubmit
    };
  })(jQuery);

  up.submit = up.form.submit;

  up.observe = up.form.observe;

  up.autosubmit = up.form.autosubmit;

  up.validate = up.form.validate;

}).call(this);

/**
Pop-up overlays
===============

Instead of [linking to a page fragment](/up.link), you can choose
to show a fragment in a popup overlay that rolls down from an anchoring element.

To open a popup, add an [`up-popup` attribute](/up-popup) to a link,
or call the Javascript function [`up.popup.attach`](/up.popup.attach).

For modal dialogs see [up.modal](/up.modal) instead.

\#\#\#\# Customizing the popup design

Loading the Unpoly stylesheet will give you a minimal popup design:

- Popup contents are displayed in a white box
- There is a a subtle box shadow around the popup
- The box will grow to fit the popup contents

The easiest way to change how the popup looks is by overriding the [default CSS styles](https://github.com/unpoly/unpoly/blob/master/lib/assets/stylesheets/up/popup.css.sass).

By default the popup uses the following DOM structure:

    <div class="up-popup">
      ...
    </div>

\#\#\#\# Closing behavior

The popup closes when the user clicks anywhere outside the popup area.

By default the popup also closes
*when a link within the popup changes a fragment behind the popup*.
This is useful to have the popup interact with the page that
opened it, e.g. by updating parts of a larger form or by signing in a user
and revealing additional information.

To disable this behavior, give the opening link an `up-sticky` attribute:

    <a href="/settings" up-popup=".options" up-sticky>Settings</a>

@class up.popup
 */

(function() {
  up.popup = (function($) {
    var align, attachAsap, attachNow, autoclose, chain, closeAsap, closeNow, config, contains, createFrame, discardHistory, isOpen, reset, state, u;
    u = up.util;

    /**
    Sets default options for future popups.
    
    @property up.popup.config
    @param {String} [config.position='bottom-right']
      Defines where the popup is attached to the opening element.
    
      Valid values are `bottom-right`, `bottom-left`, `top-right` and `top-left`.
    @param {String} [config.history=false]
      Whether opening a popup will add a browser history entry.
    @param {String} [config.openAnimation='fade-in']
      The animation used to open a popup.
    @param {String} [config.closeAnimation='fade-out']
      The animation used to close a popup.
    @param {String} [config.openDuration]
      The duration of the open animation (in milliseconds).
    @param {String} [config.closeDuration]
      The duration of the close animation (in milliseconds).
    @param {String} [config.openEasing]
      The timing function controlling the acceleration of the opening animation.
    @param {String} [config.closeEasing]
      The timing function controlling the acceleration of the closing animation.
    @param {Boolean} [options.sticky=false]
      If set to `true`, the popup remains
      open even it changes the page in the background.
    @stable
     */
    config = u.config({
      openAnimation: 'fade-in',
      closeAnimation: 'fade-out',
      openDuration: 150,
      closeDuration: 100,
      openEasing: null,
      closeEasing: null,
      position: 'bottom-right',
      history: false
    });

    /**
    Returns the source URL for the fragment displayed
    in the current popup, or `undefined` if no  popup is open.
    
    @function up.popup.url
    @return {String}
      the source URL
    @stable
     */

    /**
    Returns the URL of the page or modal behind the popup.
    
    @function up.popup.coveredUrl
    @return {String}
    @experimental
     */
    state = u.config({
      phase: 'closed',
      $anchor: null,
      $popup: null,
      position: null,
      sticky: null,
      url: null,
      coveredUrl: null,
      coveredTitle: null
    });
    chain = new u.DivertibleChain();
    reset = function() {
      var ref;
      if ((ref = state.$popup) != null) {
        ref.remove();
      }
      state.reset();
      chain.reset();
      return config.reset();
    };
    align = function() {
      var css, linkBox, popupBox;
      css = {};
      popupBox = u.measure(state.$popup);
      if (u.isFixed(state.$anchor)) {
        linkBox = state.$anchor.get(0).getBoundingClientRect();
        css['position'] = 'fixed';
      } else {
        linkBox = u.measure(state.$anchor);
      }
      switch (state.position) {
        case 'bottom-right':
          css['top'] = linkBox.top + linkBox.height;
          css['left'] = linkBox.left + linkBox.width - popupBox.width;
          break;
        case 'bottom-left':
          css['top'] = linkBox.top + linkBox.height;
          css['left'] = linkBox.left;
          break;
        case 'top-right':
          css['top'] = linkBox.top - popupBox.height;
          css['left'] = linkBox.left + linkBox.width - popupBox.width;
          break;
        case 'top-left':
          css['top'] = linkBox.top - popupBox.height;
          css['left'] = linkBox.left;
          break;
        default:
          up.fail("Unknown position option '%s'", state.position);
      }
      state.$popup.attr('up-position', state.position);
      return state.$popup.css(css);
    };
    discardHistory = function() {
      state.coveredTitle = null;
      return state.coveredUrl = null;
    };
    createFrame = function(target) {
      var $popup;
      $popup = u.$createElementFromSelector('.up-popup');
      u.$createPlaceholder(target, $popup);
      $popup.appendTo(document.body);
      return state.$popup = $popup;
    };

    /**
    Returns whether popup modal is currently open.
    
    @function up.popup.isOpen
    @stable
     */
    isOpen = function() {
      return state.phase === 'opened' || state.phase === 'opening';
    };

    /**
    Attaches a popup overlay to the given element or selector.
    
    Emits events [`up:popup:open`](/up:popup:open) and [`up:popup:opened`](/up:popup:opened).
    
    @function up.popup.attach
    @param {Element|jQuery|String} elementOrSelector
    @param {String} [options.url]
    @param {String} [options.target]
      A CSS selector that will be extracted from the response and placed into the popup.
    @param {String} [options.position='bottom-right']
      Defines where the popup is attached to the opening element.
    
      Valid values are `bottom-right`, `bottom-left`, `top-right` and `top-left`.
    @param {String} [options.confirm]
      A message that will be displayed in a cancelable confirmation dialog
      before the modal is being opened.
    @param {String} [options.animation]
      The animation to use when opening the popup.
    @param {Number} [options.duration]
      The duration of the animation. See [`up.animate`](/up.animate).
    @param {Number} [options.delay]
      The delay before the animation starts. See [`up.animate`](/up.animate).
    @param {String} [options.easing]
      The timing function that controls the animation's acceleration. [`up.animate`](/up.animate).
    @param {String} [options.method="GET"]
      Override the request method.
    @param {Boolean} [options.sticky=false]
      If set to `true`, the popup remains
      open even if the page changes in the background.
    @param {Object} [options.history=false]
    @return {Promise}
      A promise that will be resolved when the popup has been loaded and
      the opening animation has completed.
    @stable
     */
    attachAsap = function(elementOrSelector, options) {
      var curriedAttachNow;
      curriedAttachNow = function() {
        return attachNow(elementOrSelector, options);
      };
      if (isOpen()) {
        chain.asap(closeNow, curriedAttachNow);
      } else {
        chain.asap(curriedAttachNow);
      }
      return chain.promise();
    };
    attachNow = function(elementOrSelector, options) {
      var $anchor, animateOptions, html, position, target, url;
      $anchor = $(elementOrSelector);
      $anchor.length || up.fail('Cannot attach popup to non-existing element %o', elementOrSelector);
      options = u.options(options);
      url = u.option(u.pluckKey(options, 'url'), $anchor.attr('up-href'), $anchor.attr('href'));
      html = u.option(u.pluckKey(options, 'html'));
      target = u.option(u.pluckKey(options, 'target'), $anchor.attr('up-popup'), 'body');
      position = u.option(options.position, $anchor.attr('up-position'), config.position);
      options.animation = u.option(options.animation, $anchor.attr('up-animation'), config.openAnimation);
      options.sticky = u.option(options.sticky, u.castedAttr($anchor, 'up-sticky'), config.sticky);
      options.history = up.browser.canPushState() ? u.option(options.history, u.castedAttr($anchor, 'up-history'), config.history) : false;
      options.confirm = u.option(options.confirm, $anchor.attr('up-confirm'));
      options.method = up.link.followMethod($anchor, options);
      options.layer = 'popup';
      animateOptions = up.motion.animateOptions(options, $anchor, {
        duration: config.openDuration,
        easing: config.openEasing
      });
      return up.browser.whenConfirmed(options).then(function() {
        return up.bus.whenEmitted('up:popup:open', {
          url: url,
          message: 'Opening popup'
        }).then(function() {
          var extractOptions, promise;
          state.phase = 'opening';
          state.$anchor = $anchor;
          state.position = position;
          if (options.history) {
            state.coveredUrl = up.browser.url();
            state.coveredTitle = document.title;
          }
          state.sticky = options.sticky;
          options.beforeSwap = function() {
            return createFrame(target);
          };
          extractOptions = u.merge(options, {
            animation: false
          });
          if (html) {
            promise = up.extract(target, html, extractOptions);
          } else {
            promise = up.replace(target, url, extractOptions);
          }
          promise = promise.then(function() {
            align();
            return up.animate(state.$popup, options.animation, animateOptions);
          });
          promise = promise.then(function() {
            state.phase = 'opened';
            return up.emit('up:popup:opened', {
              message: 'Popup opened'
            });
          });
          return promise;
        });
      });
    };

    /**
    This event is [emitted](/up.emit) when a popup is starting to open.
    
    @event up:popup:open
    @param event.preventDefault()
      Event listeners may call this method to prevent the popup from opening.
    @stable
     */

    /**
    This event is [emitted](/up.emit) when a popup has finished opening.
    
    @event up:popup:opened
    @stable
     */

    /**
    Closes a currently opened popup overlay.
    
    Does nothing if no popup is currently open.
    
    Emits events [`up:popup:close`](/up:popup:close) and [`up:popup:closed`](/up:popup:closed).
    
    @function up.popup.close
    @param {Object} options
      See options for [`up.animate`](/up.animate).
    @return {Promise}
      A promise that will be resolved once the modal's close
      animation has finished.
    @stable
     */
    closeAsap = function(options) {
      if (isOpen()) {
        chain.asap(function() {
          return closeNow(options);
        });
      }
      return chain.promise();
    };
    closeNow = function(options) {
      var animateOptions;
      if (!isOpen()) {
        return u.resolvedPromise();
      }
      options = u.options(options, {
        animation: config.closeAnimation,
        history: state.coveredUrl,
        title: state.coveredTitle
      });
      animateOptions = up.motion.animateOptions(options, {
        duration: config.closeDuration,
        easing: config.closeEasing
      });
      u.extend(options, animateOptions);
      return up.bus.whenEmitted('up:popup:close', {
        message: 'Closing popup',
        $element: state.$popup
      }).then(function() {
        state.phase = 'closing';
        state.url = null;
        state.coveredUrl = null;
        state.coveredTitle = null;
        return up.destroy(state.$popup, options).then(function() {
          state.phase = 'closed';
          state.$popup = null;
          state.$anchor = null;
          state.sticky = null;
          return up.emit('up:popup:closed', {
            message: 'Popup closed'
          });
        });
      });
    };

    /**
    This event is [emitted](/up.emit) when a popup dialog
    is starting to [close](/up.popup.close).
    
    @event up:popup:close
    @param event.preventDefault()
      Event listeners may call this method to prevent the popup from closing.
    @stable
     */

    /**
    This event is [emitted](/up.emit) when a popup dialog
    is done [closing](/up.popup.close).
    
    @event up:popup:closed
    @stable
     */
    autoclose = function() {
      if (!state.sticky) {
        discardHistory();
        return closeAsap();
      }
    };

    /**
    Returns whether the given element or selector is contained
    within the current popup.
    
    @methods up.popup.contains
    @param {String} elementOrSelector
    @stable
     */
    contains = function(elementOrSelector) {
      var $element;
      $element = $(elementOrSelector);
      return $element.closest('.up-popup').length > 0;
    };

    /**
    Opens this link's destination of in a popup overlay:
    
        <a href="/decks" up-popup=".deck_list">Switch deck</a>
    
    If the `up-sticky` attribute is set, the dialog does not auto-close
    if a page fragment behind the popup overlay updates:
    
        <a href="/decks" up-popup=".deck_list">Switch deck</a>
        <a href="/settings" up-popup=".options" up-sticky>Settings</a>
    
    @selector [up-popup]
    @param [up-position]
      Defines where the popup is attached to the opening element.
    
      Valid values are `bottom-right`, `bottom-left`, `top-right` and `top-left`.
    @param {String} [up-confirm]
      A message that will be displayed in a cancelable confirmation dialog
      before the popup is opened.
    @param {String} [up-method='GET']
      Override the request method.
    @param [up-sticky]
      If set to `true`, the popup remains
      open even if the page changes in the background.
    @param {String} [up-history='false']
      Whether to push an entry to the browser history for the popup's source URL.
    
      Set this to `'false'` to prevent the URL bar from being updated.
      Set this to a URL string to update the history with the given URL.
    
    @stable
     */
    up.link.onAction('[up-popup]', function($link) {
      if ($link.is('.up-current')) {
        return closeAsap();
      } else {
        return attachAsap($link);
      }
    });
    up.on('mousedown', 'body', function(event, $body) {
      var $target;
      $target = $(event.target);
      if (!$target.closest('.up-popup, [up-popup]').length) {
        return closeAsap();
      }
    });
    up.on('up:fragment:inserted', function(event, $fragment) {
      var newSource;
      if (contains($fragment)) {
        if (newSource = $fragment.attr('up-source')) {
          return state.url = newSource;
        }
      } else if (contains(event.origin)) {
        return autoclose();
      }
    });
    up.bus.onEscape(closeAsap);

    /**
    When an element with this attribute is clicked,
    a currently open popup is closed.
    
    Does nothing if no popup is currently open.
    
    To make a link that closes the current popup, but follows to
    a fallback destination if no popup is open:
    
        <a href="/fallback" up-close>Okay</a>
    
    @selector [up-close]
    @stable
     */
    up.on('click', '[up-close]', function(event, $element) {
      if (contains($element)) {
        closeAsap();
        return event.preventDefault();
      }
    });
    up.on('up:framework:reset', reset);
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      attach: attachAsap,
      close: closeAsap,
      url: function() {
        return state.url;
      },
      coveredUrl: function() {
        return state.coveredUrl;
      },
      config: config,
      contains: contains,
      isOpen: isOpen
    };
  })(jQuery);

}).call(this);

/**
Modal dialogs
=============

Instead of [linking to a page fragment](/up.link), you can choose
to show a fragment in a modal dialog. The existing page will remain
open in the background and reappear once the modal is closed.

To open a modal, add an [`up-modal` attribute](/up-modal) to a link,
or call the Javascript functions [`up.modal.follow`](/up.modal.follow)
and [`up.modal.visit`](/up.modal.visit).
  
For smaller popup overlays ("dropdowns") see [up.popup](/up.popup) instead.


\#\#\#\# Customizing the dialog design

Loading the Unpoly stylesheet will give you a minimal dialog design:

- Dialog contents are displayed in a white box that is centered vertically and horizontally.
- There is a a subtle box shadow around the dialog
- The box will grow to fit the dialog contents, but never grow larger than the screen
- The box is placed over a semi-transparent background to dim the rest of the page
- There is a button to close the dialog in the top-right corner

The easiest way to change how the dialog looks is by overriding the [default CSS styles](https://github.com/unpoly/unpoly/blob/master/lib/assets/stylesheets/up/modal.css.sass).

By default the dialog uses the following DOM structure:

    <div class="up-modal">
      <div class="up-modal-backdrop">
      <div class="up-modal-viewport">
        <div class="up-modal-dialog">
          <div class="up-modal-content">
            ...
          </div>
          <div class="up-modal-close" up-close>X</div>
        </div>
      </div>
    </div>

If you want to change the design beyond CSS, you can
configure Unpoly to [use a different HTML structure](/up.modal.config).


\#\#\#\# Closing behavior

By default the dialog automatically closes
*when a link inside a modal changes a fragment behind the modal*.
This is useful to have the dialog interact with the page that
opened it, e.g. by updating parts of a larger form or by signing in a user
and revealing additional information.

To disable this behavior, give the opening link an `up-sticky` attribute:

    <a href="/settings" up-modal=".options" up-sticky>Settings</a>


@class up.modal
 */

(function() {
  up.modal = (function($) {
    var animate, autoclose, chain, closeAsap, closeNow, config, contains, createFrame, discardHistory, extractAsap, flavor, flavorDefault, flavorOverrides, followAsap, isOpen, markAsAnimating, openAsap, openNow, reset, shiftElements, state, templateHtml, u, unshiftElements, visitAsap;
    u = up.util;

    /**
    Sets default options for future modals.
    
    @property up.modal.config
    @param {String} [config.history=true]
      Whether opening a modal will add a browser history entry.
    @param {Number} [config.width]
      The width of the dialog as a CSS value like `'400px'` or `50%`.
    
      Defaults to `undefined`, meaning that the dialog will grow to fit its contents
      until it reaches `config.maxWidth`. Leaving this as `undefined` will
      also allow you to control the width using CSS on `.up-modal-dialog´.
    @param {Number} [config.maxWidth]
      The width of the dialog as a CSS value like `'400px'` or `50%`.
      You can set this to `undefined` to make the dialog fit its contents.
      Be aware however, that e.g. Bootstrap stretches input elements
      to `width: 100%`, meaning the dialog will also stretch to the full
      width of the screen.
    @param {Number} [config.height='auto']
      The height of the dialog in pixels.
      Defaults to `undefined`, meaning that the dialog will grow to fit its contents.
    @param {String|Function(config)} [config.template]
      A string containing the HTML structure of the modal.
      You can supply an alternative template string, but make sure that it
      defines tag with the classes `up-modal`, `up-modal-dialog` and  `up-modal-content`.
    
      You can also supply a function that returns a HTML string.
      The function will be called with the modal options (merged from these defaults
      and any per-open overrides) whenever a modal opens.
    @param {String} [config.closeLabel='×']
      The label of the button that closes the dialog.
    @param {Boolean} [config.closable=true]
      When `true`, the modal will render a close icon and close when the user
      clicks on the backdrop or presses Escape.
    
      When `false`, you need to either supply an element with `[up-close]` or
      close the modal manually with `up.modal.close()`.
    @param {String} [config.openAnimation='fade-in']
      The animation used to open the viewport around the dialog.
    @param {String} [config.closeAnimation='fade-out']
      The animation used to close the viewport the dialog.
    @param {String} [config.backdropOpenAnimation='fade-in']
      The animation used to open the backdrop that dims the page below the dialog.
    @param {String} [config.backdropCloseAnimation='fade-out']
      The animation used to close the backdrop that dims the page below the dialog.
    @param {Number} [config.openDuration]
      The duration of the open animation (in milliseconds).
    @param {Number} [config.closeDuration]
      The duration of the close animation (in milliseconds).
    @param {String} [config.openEasing]
      The timing function controlling the acceleration of the opening animation.
    @param {String} [config.closeEasing]
      The timing function controlling the acceleration of the closing animation.
    @param {Boolean} [options.sticky=false]
      If set to `true`, the modal remains
      open even it changes the page in the background.
    @stable
     */
    config = u.config({
      maxWidth: null,
      minWidth: null,
      width: null,
      height: null,
      history: true,
      openAnimation: 'fade-in',
      closeAnimation: 'fade-out',
      openDuration: null,
      closeDuration: null,
      openEasing: null,
      closeEasing: null,
      backdropOpenAnimation: 'fade-in',
      backdropCloseAnimation: 'fade-out',
      closeLabel: '×',
      closable: true,
      sticky: false,
      flavors: {
        "default": {}
      },
      template: function(config) {
        return "<div class=\"up-modal\">\n  <div class=\"up-modal-backdrop\"></div>\n  <div class=\"up-modal-viewport\">\n    <div class=\"up-modal-dialog\">\n      <div class=\"up-modal-content\"></div>\n      <div class=\"up-modal-close\" up-close>" + (flavorDefault('closeLabel')) + "</div>\n    </div>\n  </div>\n</div>";
      }
    });

    /**
    Returns the source URL for the fragment displayed in the current modal overlay,
    or `undefined` if no modal is currently open.
    
    @function up.modal.url
    @return {String}
      the source URL
    @stable
     */

    /**
    Returns the URL of the page behind the modal overlay.
    
    @function up.modal.coveredUrl
    @return {String}
    @experimental
     */
    state = u.config(function() {
      return {
        phase: 'closed',
        $anchor: null,
        $modal: null,
        sticky: null,
        closable: null,
        flavor: null,
        url: null,
        coveredUrl: null,
        coveredTitle: null,
        unshifters: []
      };
    });
    chain = new u.DivertibleChain();
    reset = function() {
      var ref;
      if ((ref = state.$modal) != null) {
        ref.remove();
      }
      unshiftElements();
      state.reset();
      chain.reset();
      return config.reset();
    };
    templateHtml = function() {
      var template;
      template = flavorDefault('template');
      if (u.isFunction(template)) {
        return template(config);
      } else {
        return template;
      }
    };
    discardHistory = function() {
      state.coveredTitle = null;
      return state.coveredUrl = null;
    };
    createFrame = function(target, options) {
      var $content, $dialog, $modal;
      $modal = $(templateHtml());
      $modal.attr('up-flavor', state.flavor);
      $dialog = $modal.find('.up-modal-dialog');
      if (u.isPresent(options.width)) {
        $dialog.css('width', options.width);
      }
      if (u.isPresent(options.maxWidth)) {
        $dialog.css('max-width', options.maxWidth);
      }
      if (u.isPresent(options.height)) {
        $dialog.css('height', options.height);
      }
      if (!state.closable) {
        $modal.find('.up-modal-close').remove();
      }
      $content = $modal.find('.up-modal-content');
      u.$createPlaceholder(target, $content);
      $modal.appendTo(document.body);
      return state.$modal = $modal;
    };
    shiftElements = function() {
      var $body, bodyRightPadding, bodyRightShift, scrollbarWidth, unshiftBody;
      if (u.documentHasVerticalScrollbar()) {
        $body = $('body');
        scrollbarWidth = u.scrollbarWidth();
        bodyRightPadding = parseInt($body.css('padding-right'));
        bodyRightShift = scrollbarWidth + bodyRightPadding;
        unshiftBody = u.temporaryCss($body, {
          'padding-right': bodyRightShift + "px",
          'overflow-y': 'hidden'
        });
        state.unshifters.push(unshiftBody);
        return up.layout.anchoredRight().each(function() {
          var $element, elementRight, elementRightShift, unshifter;
          $element = $(this);
          elementRight = parseInt($element.css('right'));
          elementRightShift = scrollbarWidth + elementRight;
          unshifter = u.temporaryCss($element, {
            'right': elementRightShift
          });
          return state.unshifters.push(unshifter);
        });
      }
    };
    unshiftElements = function() {
      var results, unshifter;
      results = [];
      while (unshifter = state.unshifters.pop()) {
        results.push(unshifter());
      }
      return results;
    };

    /**
    Returns whether a modal is currently open.
    
    This also returns `true` if the modal is in an opening or closing animation.
    
    @function up.modal.isOpen
    @stable
     */
    isOpen = function() {
      return state.phase === 'opened' || state.phase === 'opening';
    };

    /**
    Opens the given link's destination in a modal overlay:
    
        var $link = $('...');
        up.modal.follow($link);
    
    Any option attributes for [`a[up-modal]`](/a.up-modal) will be honored.
    
    Emits events [`up:modal:open`](/up:modal:open) and [`up:modal:opened`](/up:modal:opened).
    
    @function up.modal.follow
    @param {Element|jQuery|String} linkOrSelector
      The link to follow.
    @param {String} [options.target]
      The selector to extract from the response and open in a modal dialog.
    @param {Number} [options.width]
      The width of the dialog in pixels.
      By [default](/up.modal.config) the dialog will grow to fit its contents.
    @param {Number} [options.height]
      The width of the dialog in pixels.
      By [default](/up.modal.config) the dialog will grow to fit its contents.
    @param {Boolean} [options.sticky=false]
      If set to `true`, the modal remains
      open even it changes the page in the background.
    @param {Boolean} [config.closable=true]
      When `true`, the modal will render a close icon and close when the user
      clicks on the backdrop or presses Escape.
    
      When `false`, you need to either supply an element with `[up-close]` or
      close the modal manually with `up.modal.close()`.
    @param {String} [options.confirm]
      A message that will be displayed in a cancelable confirmation dialog
      before the modal is being opened.
    @param {String} [options.method="GET"]
      Override the request method.
    @param {Object} [options.history=true]
      Whether to add a browser history entry for the modal's source URL.
    @param {String} [options.animation]
      The animation to use when opening the modal.
    @param {Number} [options.duration]
      The duration of the animation. See [`up.animate`](/up.animate).
    @param {Number} [options.delay]
      The delay before the animation starts. See [`up.animate`](/up.animate).
    @param {String} [options.easing]
      The timing function that controls the animation's acceleration. [`up.animate`](/up.animate).
    @return {Promise}
      A promise that will be resolved when the modal has been loaded and
      the opening animation has completed.
    @stable
     */
    followAsap = function(linkOrSelector, options) {
      options = u.options(options);
      options.$link = $(linkOrSelector);
      return openAsap(options);
    };

    /**
    Opens a modal for the given URL.
    
    Example:
    
        up.modal.visit('/foo', { target: '.list' });
    
    This will request `/foo`, extract the `.list` selector from the response
    and open the selected container in a modal dialog.
    
    Emits events [`up:modal:open`](/up:modal:open) and [`up:modal:opened`](/up:modal:opened).
    
    @function up.modal.visit
    @param {String} url
      The URL to load.
    @param {String} options.target
      The CSS selector to extract from the response.
      The extracted content will be placed into the dialog window.
    @param {Object} options
      See options for [`up.modal.follow`](/up.modal.follow).
    @return {Promise}
      A promise that will be resolved when the modal has been loaded and the opening
      animation has completed.
    @stable
     */
    visitAsap = function(url, options) {
      options = u.options(options);
      options.url = url;
      return openAsap(options);
    };

    /**
    [Extracts](/up.extract) the given CSS selector from the given HTML string and
    opens the results in a modal.
    
    Example:
    
        var html = 'before <div class="content">inner</div> after';
        up.modal.extract('.content', html);
    
    The would open a modal with the following contents:
    
        <div class="content">inner</div>
    
    Emits events [`up:modal:open`](/up:modal:open) and [`up:modal:opened`](/up:modal:opened).
    
    @function up.modal.extract
    @param {String} selector
      The CSS selector to extract from the HTML.
    @param {String} html
      The HTML containing the modal content.
    @param {Object} options
      See options for [`up.modal.follow`](/up.modal.follow).
    @return {Promise}
      A promise that will be resolved when the modal has been opened and the opening
      animation has completed.
    @stable
     */
    extractAsap = function(selector, html, options) {
      options = u.options(options);
      options.html = html;
      options.history = u.option(options.history, false);
      options.target = selector;
      return openAsap(options);
    };
    openAsap = function(options) {
      var curriedOpenNow;
      curriedOpenNow = function() {
        return openNow(options);
      };
      if (isOpen()) {
        chain.asap(closeNow, curriedOpenNow);
      } else {
        chain.asap(curriedOpenNow);
      }
      return chain.promise();
    };
    openNow = function(options) {
      var $link, animateOptions, html, target, url;
      options = u.options(options);
      $link = u.option(u.pluckKey(options, '$link'), u.nullJQuery());
      url = u.option(u.pluckKey(options, 'url'), $link.attr('up-href'), $link.attr('href'));
      html = u.option(u.pluckKey(options, 'html'));
      target = u.option(u.pluckKey(options, 'target'), $link.attr('up-modal'), 'body');
      options.flavor = u.option(options.flavor, $link.attr('up-flavor'));
      options.width = u.option(options.width, $link.attr('up-width'), flavorDefault('width', options.flavor));
      options.maxWidth = u.option(options.maxWidth, $link.attr('up-max-width'), flavorDefault('maxWidth', options.flavor));
      options.height = u.option(options.height, $link.attr('up-height'), flavorDefault('height'));
      options.animation = u.option(options.animation, $link.attr('up-animation'), flavorDefault('openAnimation', options.flavor));
      options.backdropAnimation = u.option(options.backdropAnimation, $link.attr('up-backdrop-animation'), flavorDefault('backdropOpenAnimation', options.flavor));
      options.sticky = u.option(options.sticky, u.castedAttr($link, 'up-sticky'), flavorDefault('sticky', options.flavor));
      options.closable = u.option(options.closable, u.castedAttr($link, 'up-closable'), flavorDefault('closable', options.flavor));
      options.confirm = u.option(options.confirm, $link.attr('up-confirm'));
      options.method = up.link.followMethod($link, options);
      options.layer = 'modal';
      animateOptions = up.motion.animateOptions(options, $link, {
        duration: flavorDefault('openDuration', options.flavor),
        easing: flavorDefault('openEasing', options.flavor)
      });
      options.history = u.option(options.history, u.castedAttr($link, 'up-history'), flavorDefault('history', options.flavor));
      if (!up.browser.canPushState()) {
        options.history = false;
      }
      return up.browser.whenConfirmed(options).then(function() {
        return up.bus.whenEmitted('up:modal:open', {
          url: url,
          message: 'Opening modal'
        }).then(function() {
          var extractOptions, promise;
          state.phase = 'opening';
          state.flavor = options.flavor;
          state.sticky = options.sticky;
          state.closable = options.closable;
          if (options.history) {
            state.coveredUrl = up.browser.url();
            state.coveredTitle = document.title;
          }
          options.beforeSwap = function() {
            return createFrame(target, options);
          };
          extractOptions = u.merge(options, {
            animation: false
          });
          if (html) {
            promise = up.extract(target, html, extractOptions);
          } else {
            promise = up.replace(target, url, extractOptions);
          }
          promise = promise.then(function() {
            shiftElements();
            return animate(options.animation, options.backdropAnimation, animateOptions);
          });
          promise = promise.then(function() {
            state.phase = 'opened';
            return up.emit('up:modal:opened', {
              message: 'Modal opened'
            });
          });
          return promise;
        });
      });
    };

    /**
    This event is [emitted](/up.emit) when a modal dialog is starting to open.
    
    @event up:modal:open
    @param event.preventDefault()
      Event listeners may call this method to prevent the modal from opening.
    @stable
     */

    /**
    This event is [emitted](/up.emit) when a modal dialog has finished opening.
    
    @event up:modal:opened
    @stable
     */

    /**
    Closes a currently opened modal overlay.
    
    Does nothing if no modal is currently open.
    
    Emits events [`up:modal:close`](/up:modal:close) and [`up:modal:closed`](/up:modal:closed).
    
    @function up.modal.close
    @param {Object} options
      See options for [`up.animate`](/up.animate)
    @return {Promise}
      A promise that will be resolved once the modal's close
      animation has finished.
    @stable
     */
    closeAsap = function(options) {
      if (isOpen()) {
        chain.asap(function() {
          return closeNow(options);
        });
      }
      return chain.promise();
    };
    closeNow = function(options) {
      var animateOptions, backdropCloseAnimation, destroyOptions, viewportCloseAnimation;
      if (!isOpen()) {
        return u.resolvedPromise();
      }
      options = u.options(options);
      viewportCloseAnimation = u.option(options.animation, flavorDefault('closeAnimation'));
      backdropCloseAnimation = u.option(options.backdropAnimation, flavorDefault('backdropCloseAnimation'));
      animateOptions = up.motion.animateOptions(options, {
        duration: flavorDefault('closeDuration'),
        easing: flavorDefault('closeEasing')
      });
      destroyOptions = u.options(u.except(options, 'animation', 'duration', 'easing', 'delay'), {
        history: state.coveredUrl,
        title: state.coveredTitle
      });
      return up.bus.whenEmitted('up:modal:close', {
        $element: state.$modal,
        message: 'Closing modal'
      }).then(function() {
        var promise;
        state.phase = 'closing';
        state.url = null;
        state.coveredUrl = null;
        state.coveredTitle = null;
        promise = animate(viewportCloseAnimation, backdropCloseAnimation, animateOptions);
        promise = promise.then(function() {
          return up.destroy(state.$modal, destroyOptions);
        });
        promise = promise.then(function() {
          unshiftElements();
          state.phase = 'closed';
          state.$modal = null;
          state.flavor = null;
          state.sticky = null;
          state.closable = null;
          return up.emit('up:modal:closed', {
            message: 'Modal closed'
          });
        });
        return promise;
      });
    };
    markAsAnimating = function(isAnimating) {
      if (isAnimating == null) {
        isAnimating = true;
      }
      return state.$modal.toggleClass('up-modal-animating', isAnimating);
    };
    animate = function(viewportAnimation, backdropAnimation, animateOptions) {
      var promise;
      if (up.motion.isNone(viewportAnimation)) {
        return u.resolvedPromise();
      } else {
        markAsAnimating();
        promise = $.when(up.animate(state.$modal.find('.up-modal-viewport'), viewportAnimation, animateOptions), up.animate(state.$modal.find('.up-modal-backdrop'), backdropAnimation, animateOptions));
        promise = promise.then(function() {
          return markAsAnimating(false);
        });
        return promise;
      }
    };

    /**
    This event is [emitted](/up.emit) when a modal dialog
    is starting to [close](/up.modal.close).
    
    @event up:modal:close
    @param event.preventDefault()
      Event listeners may call this method to prevent the modal from closing.
    @stable
     */

    /**
    This event is [emitted](/up.emit) when a modal dialog
    is done [closing](/up.modal.close).
    
    @event up:modal:closed
    @stable
     */
    autoclose = function() {
      if (!state.sticky) {
        discardHistory();
        return closeAsap();
      }
    };

    /**
    Returns whether the given element or selector is contained
    within the current modal.
    
    @function up.modal.contains
    @param {String} elementOrSelector
    @stable
     */
    contains = function(elementOrSelector) {
      var $element;
      $element = $(elementOrSelector);
      return $element.closest('.up-modal').length > 0;
    };

    /**
    Register a new modal variant with its own default configuration, CSS or HTML template.
    
    \#\#\#\# Example
    
    Let's implement a drawer that slides in from the right:
    
        up.modal.flavor('drawer', {
          openAnimation: 'move-from-right',
          closeAnimation: 'move-to-right',
          maxWidth: 400
        }
    
    Modals with that flavor will have a container `<div class='up-modal' up-flavor='drawer'>...</div>`.
    We can target the `up-flavor` attribute override the default dialog styles:
    
        .up-modal[up-flavor='drawer'] {
    
          // Align drawer on the right
          .up-modal-viewport { text-align: right; }
    
          // Remove margin so the drawer starts at the screen edge
          .up-modal-dialog { margin: 0; }
    
          // Stretch drawer background to full window height
          .up-modal-content { min-height: 100vh; }
        }
    
    @function up.modal.flavor
    @param {String} name
      The name of the new flavor.
    @param {Object} [overrideConfig]
      An object whose properties override the defaults in [`/up.modal.config`](/up.modal.config).
    @experimental
     */
    flavor = function(name, overrideConfig) {
      if (overrideConfig == null) {
        overrideConfig = {};
      }
      return u.extend(flavorOverrides(name), overrideConfig);
    };

    /**
    Returns a config object for the given flavor.
    Properties in that config should be preferred to the defaults in
    [`/up.modal.config`](/up.modal.config).
    
    @function flavorOverrides
    @internal
     */
    flavorOverrides = function(flavor) {
      var base;
      return (base = config.flavors)[flavor] || (base[flavor] = {});
    };

    /**
    Returns the config option for the current flavor.
    
    @function flavorDefault
    @internal
     */
    flavorDefault = function(key, flavorName) {
      var value;
      if (flavorName == null) {
        flavorName = state.flavor;
      }
      if (flavorName) {
        value = flavorOverrides(flavorName)[key];
      }
      if (u.isMissing(value)) {
        value = config[key];
      }
      return value;
    };

    /**
    Clicking this link will load the destination via AJAX and open
    the given selector in a modal dialog.
    
    Example:
    
        <a href="/blogs" up-modal=".blog-list">Switch blog</a>
    
    Clicking would request the path `/blog` and select `.blog-list` from
    the HTML response. Unpoly will dim the page with an overlay
    and place the matching `.blog-list` tag will be placed in
    a modal dialog.
    
    @selector [up-modal]
    @param {String} [up-confirm]
      A message that will be displayed in a cancelable confirmation dialog
      before the modal is opened.
    @param {String} [up-method='GET']
      Override the request method.
    @param {String} [up-sticky]
      If set to `"true"`, the modal remains
      open even if the page changes in the background.
    @param {Boolean} [up-closable]
      When `true`, the modal will render a close icon and close when the user
      clicks on the backdrop or presses Escape.
    
      When `false`, you need to either supply an element with `[up-close]` or
      close the modal manually with `up.modal.close()`.
    @param {String} [up-animation]
      The animation to use when opening the viewport containing the dialog.
    @param {String} [up-backdrop-animation]
      The animation to use when opening the backdrop that dims the page below the dialog.
    @param {String} [up-height]
      The width of the dialog in pixels.
      By [default](/up.modal.config) the dialog will grow to fit its contents.
    @param {String} [up-width]
      The width of the dialog in pixels.
      By [default](/up.modal.config) the dialog will grow to fit its contents.
    @param {String} [up-history]
      Whether to push an entry to the browser history for the modal's source URL.
    
      Set this to `'false'` to prevent the URL bar from being updated.
      Set this to a URL string to update the history with the given URL.
    
    @stable
     */
    up.link.onAction('[up-modal]', function($link) {
      return followAsap($link);
    });
    up.on('click', 'body', function(event, $body) {
      var $target;
      if (!state.closable) {
        return;
      }
      $target = $(event.target);
      if (!($target.closest('.up-modal-dialog').length || $target.closest('[up-modal]').length)) {
        return closeAsap();
      }
    });
    up.on('up:fragment:inserted', function(event, $fragment) {
      var newSource;
      if (contains($fragment)) {
        if (newSource = $fragment.attr('up-source')) {
          return state.url = newSource;
        }
      } else if (contains(event.origin) && !up.popup.contains($fragment)) {
        return autoclose();
      }
    });
    up.bus.onEscape(function() {
      if (state.closable) {
        return closeAsap();
      }
    });

    /**
    When this element is clicked, closes a currently open dialog.
    
    Does nothing if no modal is currently open.
    
    To make a link that closes the current modal, but follows to
    a fallback destination if no modal is open:
    
        <a href="/fallback" up-close>Okay</a>
    
    @selector [up-close]
    @stable
     */
    up.on('click', '[up-close]', function(event, $element) {
      if (contains($element)) {
        closeAsap();
        return event.preventDefault();
      }
    });
    up.on('up:framework:reset', reset);
    return {
      knife: eval(typeof Knife !== "undefined" && Knife !== null ? Knife.point : void 0),
      visit: visitAsap,
      follow: followAsap,
      extract: extractAsap,
      close: closeAsap,
      url: function() {
        return state.url;
      },
      coveredUrl: function() {
        return state.coveredUrl;
      },
      config: config,
      contains: contains,
      isOpen: isOpen,
      flavor: flavor
    };
  })(jQuery);

}).call(this);

/**
Tooltips
========

Unpoly comes with a basic tooltip implementation.

You can an [`up-tooltip`](/up-tooltip) attribute to any HTML tag to show a tooltip whenever
  the user hovers over the element:

      <a href="/decks" up-tooltip="Show all decks">Decks</a>


\#\#\#\# Styling

The [default styles](https://github.com/unpoly/unpoly/blob/master/lib/assets/stylesheets/up/tooltip.css.sass)
show a simple tooltip with white text on a gray background.
A gray triangle points to the element.

To change the styling, simply override CSS rules for the `.up-tooltip` selector and its `:after`
selector that is used the triangle.

The HTML of a tooltip element is simply this:

    <div class="up-tooltip">
      Show all decks
    </div>

The tooltip element is appended to the end of `<body>`.

@class up.tooltip
 */

(function() {
  up.tooltip = (function($) {
    var align, attachAsap, attachNow, chain, closeAsap, closeNow, config, createElement, isOpen, reset, state, u;
    u = up.util;

    /**
    Sets default options for future tooltips.
    
    @property up.tooltip.config
    @param {String} [config.position]
      The default position of tooltips relative to the element.
      Can be `'top'`, `'right'`, `'bottom'` or `'left'`.
    @param {String} [config.openAnimation='fade-in']
      The animation used to open a tooltip.
    @param {String} [config.closeAnimation='fade-out']
      The animation used to close a tooltip.
    @param {Number} [config.openDuration]
      The duration of the open animation (in milliseconds).
    @param {Number} [config.closeDuration]
      The duration of the close animation (in milliseconds).
    @param {String} [config.openEasing]
      The timing function controlling the acceleration of the opening animation.
    @param {String} [config.closeEasing]
      The timing function controlling the acceleration of the closing animation.
    @stable
     */
    config = u.config({
      position: 'top',
      openAnimation: 'fade-in',
      closeAnimation: 'fade-out',
      openDuration: 100,
      closeDuration: 50,
      openEasing: null,
      closeEasing: null
    });
    state = u.config({
      phase: 'closed',
      $anchor: null,
      $tooltip: null,
      position: null
    });
    chain = new u.DivertibleChain();
    reset = function() {
      var ref;
      if ((ref = state.$tooltip) != null) {
        ref.remove();
      }
      state.reset();
      chain.reset();
      return config.reset();
    };
    align = function() {
      var css, linkBox, tooltipBox;
      css = {};
      tooltipBox = u.measure(state.$tooltip);
      if (u.isFixed(state.$anchor)) {
        linkBox = state.$anchor.get(0).getBoundingClientRect();
        css['position'] = 'fixed';
      } else {
        linkBox = u.measure(state.$anchor);
      }
      switch (state.position) {
        case 'top':
          css['top'] = linkBox.top - tooltipBox.height;
          css['left'] = linkBox.left + 0.5 * (linkBox.width - tooltipBox.width);
          break;
        case 'left':
          css['top'] = linkBox.top + 0.5 * (linkBox.height - tooltipBox.height);
          css['left'] = linkBox.left - tooltipBox.width;
          break;
        case 'right':
          css['top'] = linkBox.top + 0.5 * (linkBox.height - tooltipBox.height);
          css['left'] = linkBox.left + linkBox.width;
          break;
        case 'bottom':
          css['top'] = linkBox.top + linkBox.height;
          css['left'] = linkBox.left + 0.5 * (linkBox.width - tooltipBox.width);
          break;
        default:
          up.fail("Unknown position option '%s'", state.position);
      }
      state.$tooltip.attr('up-position', state.position);
      return state.$tooltip.css(css);
    };
    createElement = function(options) {
      var $element;
      $element = u.$createElementFromSelector('.up-tooltip');
      if (u.isGiven(options.text)) {
        $element.text(options.text);
      } else {
        $element.html(options.html);
      }
      $element.appendTo(document.body);
      return state.$tooltip = $element;
    };

    /**
    Opens a tooltip over the given element.
    
        up.tooltip.attach('.help', {
          html: 'Enter multiple words or phrases'
        });
    
    @function up.tooltip.attach
    @param {Element|jQuery|String} elementOrSelector
    @param {String} [options.html]
      The HTML to display in the tooltip.
    @param {String} [options.position='top']
      The position of the tooltip.
      Can be `'top'`, `'right'`, `'bottom'` or `'left'`.
    @param {String} [options.animation]
      The animation to use when opening the tooltip.
    @return {Promise}
      A promise that will be resolved when the tooltip's opening animation has finished.
    @stable
     */
    attachAsap = function(elementOrSelector, options) {
      var curriedAttachNow;
      if (options == null) {
        options = {};
      }
      curriedAttachNow = function() {
        return attachNow(elementOrSelector, options);
      };
      if (isOpen()) {
        chain.asap(closeNow, curriedAttachNow);
      } else {
        chain.asap(curriedAttachNow);
      }
      return chain.promise();
    };
    attachNow = function(elementOrSelector, options) {
      var $anchor, animateOptions, animation, html, position, text;
      $anchor = $(elementOrSelector);
      options = u.options(options);
      html = u.option(options.html, $anchor.attr('up-tooltip-html'));
      text = u.option(options.text, $anchor.attr('up-tooltip'));
      position = u.option(options.position, $anchor.attr('up-position'), config.position);
      animation = u.option(options.animation, u.castedAttr($anchor, 'up-animation'), config.openAnimation);
      animateOptions = up.motion.animateOptions(options, $anchor, {
        duration: config.openDuration,
        easing: config.openEasing
      });
      state.phase = 'opening';
      state.$anchor = $anchor;
      createElement({
        text: text,
        html: html
      });
      state.position = position;
      align();
      return up.animate(state.$tooltip, animation, animateOptions).then(function() {
        return state.phase = 'opened';
      });
    };

    /**
    Closes a currently shown tooltip.
    Does nothing if no tooltip is currently shown.
    
    @function up.tooltip.close
    @param {Object} options
      See options for [`up.animate`](/up.animate).
    @return {Promise}
      A promise for the end of the closing animation.
    @stable
     */
    closeAsap = function(options) {
      if (isOpen()) {
        chain.asap(function() {
          return closeNow(options);
        });
      }
      return chain.promise();
    };
    closeNow = function(options) {
      var animateOptions;
      if (!isOpen()) {
        return u.resolvedPromise();
      }
      options = u.options(options, {
        animation: config.closeAnimation
      });
      animateOptions = up.motion.animateOptions(options, {
        duration: config.closeDuration,
        easing: config.closeEasing
      });
      u.extend(options, animateOptions);
      state.phase = 'closing';
      return up.destroy(state.$tooltip, options).then(function() {
        state.phase = 'closed';
        state.$tooltip = null;
        return state.$anchor = null;
      });
    };

    /**
    Returns whether a tooltip is currently showing.
    
    @function up.tooltip.isOpen
    @stable
     */
    isOpen = function() {
      return state.phase === 'opening' || state.phase === 'opened';
    };

    /**
    Displays a tooltip with text content when hovering the mouse over this element:
    
        <a href="/decks" up-tooltip="Show all decks">Decks</a>
    
    To make the tooltip appear below the element instead of above the element,
    add an `up-position` attribute:
    
        <a href="/decks" up-tooltip="Show all decks" up-position="bottom">Decks</a>
    
    @selector [up-tooltip]
    @param {String} [up-animation]
      The animation used to open the tooltip.
      Defaults to [`up.tooltip.config.openAnimation`](/up.tooltip.config).
    @param {String} [up-position]
      The default position of tooltips relative to the element.
      Can be either `"top"` or `"bottom"`.
      Defaults to [`up.tooltip.config.position`](/up.tooltip.config).
    @stable
     */

    /**
    Displays a tooltip with HTML content when hovering the mouse over this element:
    
        <a href="/decks" up-tooltip-html="Show &lt;b&gt;all&lt;/b&gt; decks">Decks</a>
    
    @selector [up-tooltip-html]
    @stable
     */
    up.compiler('[up-tooltip], [up-tooltip-html]', function($opener) {
      $opener.on('mouseenter', function() {
        return attachAsap($opener);
      });
      return $opener.on('mouseleave', function() {
        return closeAsap();
      });
    });
    up.on('click', 'body', function(event, $body) {
      return closeAsap();
    });
    up.on('up:framework:reset', reset);
    up.bus.onEscape(function() {
      return closeAsap();
    });
    return {
      config: config,
      attach: attachAsap,
      isOpen: isOpen,
      close: closeAsap
    };
  })(jQuery);

}).call(this);

/**
Navigation bars
===============

Unpoly automatically marks up link elements with classes indicating that
they are currently loading (class `up-active`) or linking
to the current location (class `up-current`).

This dramatically improves the perceived speed of your user interface
by providing instant feedback for user interactions.

@class up.navigation
 */

(function() {
  var slice = [].slice;

  up.navigation = (function($) {
    var CLASS_ACTIVE, SELECTOR_SECTION, config, currentClass, findClickArea, locationChanged, markActive, normalizeUrl, reset, sectionUrls, u, unmarkActive, urlSet, withActiveMark;
    u = up.util;

    /**
    Sets default options for this module.
    
    @property up.navigation.config
    @param {Number} [config.currentClasses]
      An array of classes to set on [links that point the current location](/up-current).
    @stable
     */
    config = u.config({
      currentClasses: ['up-current']
    });
    reset = function() {
      return config.reset();
    };
    currentClass = function() {
      var classes;
      classes = config.currentClasses;
      classes = classes.concat(['up-current']);
      classes = u.uniq(classes);
      return classes.join(' ');
    };
    CLASS_ACTIVE = 'up-active';
    SELECTOR_SECTION = 'a, [up-href]';
    normalizeUrl = function(url) {
      if (u.isPresent(url)) {
        return u.normalizeUrl(url);
      }
    };
    sectionUrls = function($section) {
      var attr, i, j, len, len1, ref, url, urls, value, values;
      urls = [];
      ref = ['href', 'up-href', 'up-alias'];
      for (i = 0, len = ref.length; i < len; i++) {
        attr = ref[i];
        if (value = u.presentAttr($section, attr)) {
          values = attr === 'up-alias' ? value.split(' ') : [value];
          for (j = 0, len1 = values.length; j < len1; j++) {
            url = values[j];
            if (url !== '#') {
              url = normalizeUrl(url);
              urls.push(url);
            }
          }
        }
      }
      return urls;
    };
    urlSet = function(urls) {
      var doesMatchFully, doesMatchPrefix, matches, matchesAny;
      urls = u.compact(urls);
      matches = function(testUrl) {
        if (testUrl.substr(-1) === '*') {
          return doesMatchPrefix(testUrl.slice(0, -1));
        } else {
          return doesMatchFully(testUrl);
        }
      };
      doesMatchFully = function(testUrl) {
        return u.contains(urls, testUrl);
      };
      doesMatchPrefix = function(prefix) {
        return u.detect(urls, function(url) {
          return url.indexOf(prefix) === 0;
        });
      };
      matchesAny = function(testUrls) {
        return u.detect(testUrls, matches);
      };
      return {
        matchesAny: matchesAny
      };
    };
    locationChanged = function() {
      var currentUrls, klass;
      currentUrls = urlSet([normalizeUrl(up.browser.url()), normalizeUrl(up.modal.url()), normalizeUrl(up.modal.coveredUrl()), normalizeUrl(up.popup.url()), normalizeUrl(up.popup.coveredUrl())]);
      klass = currentClass();
      return u.each($(SELECTOR_SECTION), function(section) {
        var $section, urls;
        $section = $(section);
        urls = sectionUrls($section);
        if (currentUrls.matchesAny(urls)) {
          return $section.addClass(klass);
        } else if ($section.hasClass(klass) && $section.closest('.up-destroying').length === 0) {
          return $section.removeClass(klass);
        }
      });
    };

    /**
    @function findClickArea
    @param {String|Element|jQuery} elementOrSelector
    @param {Boolean} options.enlarge
      If `true`, tries to find a containing link that has expanded the link's click area.
      If we find one, we prefer to mark the larger area as active.
    @internal
     */
    findClickArea = function(elementOrSelector, options) {
      var $area;
      $area = $(elementOrSelector);
      options = u.options(options, {
        enlarge: false
      });
      if (options.enlarge) {
        return u.presence($area.parent(SELECTOR_SECTION)) || $area;
      } else {
        return $area;
      }
    };

    /**
    Links that are currently loading are assigned the `up-active`
    class automatically. Style `.up-active` in your CSS to improve the
    perceived responsiveness of your user interface.
    
    The `up-active` class will be removed as soon as another
    page fragment is added or updated through Unpoly.
    
    \#\#\#\# Example
    
    We have a link:
    
        <a href="/foo" up-follow>Foo</a>
    
    The user clicks on the link. While the request is loading,
    the link has the `up-active` class:
    
        <a href="/foo" up-follow class="up-active">Foo</a>
    
    Once the link destination has loaded and rendered, the `up-active` class
    is removed and the [`up-current`](/up-current) class is added:
    
        <a href="/foo" up-follow class="up-current">Foo</a>
    
    @selector .up-active
    @stable
     */
    markActive = function(elementOrSelector, options) {
      var $element;
      $element = findClickArea(elementOrSelector, options);
      return $element.addClass(CLASS_ACTIVE);
    };
    unmarkActive = function(elementOrSelector, options) {
      var $element;
      $element = findClickArea(elementOrSelector, options);
      return $element.removeClass(CLASS_ACTIVE);
    };
    withActiveMark = function() {
      var $element, args, block, elementOrSelector, options, promise;
      elementOrSelector = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
      block = args.pop();
      options = u.options(args.pop());
      $element = $(elementOrSelector);
      markActive($element, options);
      promise = block();
      if (u.isPromise(promise)) {
        promise.always(function() {
          return unmarkActive($element, options);
        });
      } else {
        up.warn('Expected block to return a promise, but got %o', promise);
      }
      return promise;
    };

    /**
    Links that point to the current location are assigned
    the `up-current` class automatically.
    
    The use case for this is navigation bars:
    
        <nav>
          <a href="/foo">Foo</a>
          <a href="/bar">Bar</a>
        </nav>
    
    If the browser location changes to `/foo`, the markup changes to this:
    
        <nav>
          <a href="/foo" class="up-current">Foo</a>
          <a href="/bar">Bar</a>
        </nav>
    
    \#\#\#\# What's considered to be "current"?
    
    The current location is considered to be either:
    
    - the URL displayed in the browser window's location bar
    - the source URL of a currently opened [modal dialog](/up.modal)
    - the source URL of a currently opened [popup overlay](/up.popup)
    
    A link matches the current location (and is marked as `.up-current`) if it matches either:
    
    - the link's `href` attribute
    - the link's [`up-href`](#turn-any-element-into-a-link) attribute
    - a space-separated list of URLs in the link's `up-alias` attribute
    
    \#\#\#\# Matching URL by prefix
    
    You can mark a link as `.up-current` whenever the current URL matches a prefix.
    To do so, end the `up-alias` attribute in an asterisk (`*`).
    
    For instance, the following link is highlighted for both `/reports` and `/reports/123`:
    
        <a href="/reports" up-alias="/reports/*">Reports</a>
    
    @selector .up-current
    @stable
     */
    up.on('up:fragment:inserted', function() {
      return locationChanged();
    });
    up.on('up:fragment:destroyed', function(event, $fragment) {
      if ($fragment.is('.up-modal, .up-popup')) {
        return locationChanged();
      }
    });
    up.on('up:framework:reset', reset);
    return {
      config: config,
      defaults: function() {
        return up.fail('up.navigation.defaults(...) no longer exists. Set values on he up.navigation.config property instead.');
      },
      markActive: markActive,
      unmarkActive: unmarkActive,
      withActiveMark: withActiveMark
    };
  })(jQuery);

}).call(this);

/**
Play nice with Rails UJS
========================
 */

(function() {
  up.rails = (function($) {
    var csrfField, isRails, u, willHandle;
    u = up.util;
    willHandle = function($element) {
      return $element.is('[up-follow], [up-target], [up-modal], [up-popup]');
    };
    isRails = function() {
      return u.isGiven($.rails);
    };
    u.each(['method', 'confirm'], function(feature) {
      var dataAttribute, upAttribute;
      dataAttribute = "data-" + feature;
      upAttribute = "up-" + feature;
      return up.compiler("[" + dataAttribute + "]", function($element) {
        var replacement;
        if (isRails() && willHandle($element)) {
          replacement = {};
          replacement[upAttribute] = $element.attr(dataAttribute);
          u.setMissingAttrs($element, replacement);
          return $element.removeAttr(dataAttribute);
        }
      });
    });
    csrfField = function() {
      if (isRails()) {
        return {
          name: $.rails.csrfParam(),
          value: $.rails.csrfToken()
        };
      }
    };
    return {
      csrfField: csrfField,
      isRails: isRails
    };
  })(jQuery);

}).call(this);
(function() {
  up.boot();

}).call(this);
/* ========================================================================
 * Bootstrap: transition.js v3.3.7
 * http://getbootstrap.com/javascript/#transitions
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // CSS TRANSITION SUPPORT (Shoutout: http://www.modernizr.com/)
  // ============================================================

  function transitionEnd() {
    var el = document.createElement('bootstrap')

    var transEndEventNames = {
      WebkitTransition : 'webkitTransitionEnd',
      MozTransition    : 'transitionend',
      OTransition      : 'oTransitionEnd otransitionend',
      transition       : 'transitionend'
    }

    for (var name in transEndEventNames) {
      if (el.style[name] !== undefined) {
        return { end: transEndEventNames[name] }
      }
    }

    return false // explicit for ie8 (  ._.)
  }

  // http://blog.alexmaccaw.com/css-transitions
  $.fn.emulateTransitionEnd = function (duration) {
    var called = false
    var $el = this
    $(this).one('bsTransitionEnd', function () { called = true })
    var callback = function () { if (!called) $($el).trigger($.support.transition.end) }
    setTimeout(callback, duration)
    return this
  }

  $(function () {
    $.support.transition = transitionEnd()

    if (!$.support.transition) return

    $.event.special.bsTransitionEnd = {
      bindType: $.support.transition.end,
      delegateType: $.support.transition.end,
      handle: function (e) {
        if ($(e.target).is(this)) return e.handleObj.handler.apply(this, arguments)
      }
    }
  })

}(jQuery);
/* ========================================================================
 * Bootstrap: alert.js v3.3.7
 * http://getbootstrap.com/javascript/#alerts
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // ALERT CLASS DEFINITION
  // ======================

  var dismiss = '[data-dismiss="alert"]'
  var Alert   = function (el) {
    $(el).on('click', dismiss, this.close)
  }

  Alert.VERSION = '3.3.7'

  Alert.TRANSITION_DURATION = 150

  Alert.prototype.close = function (e) {
    var $this    = $(this)
    var selector = $this.attr('data-target')

    if (!selector) {
      selector = $this.attr('href')
      selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
    }

    var $parent = $(selector === '#' ? [] : selector)

    if (e) e.preventDefault()

    if (!$parent.length) {
      $parent = $this.closest('.alert')
    }

    $parent.trigger(e = $.Event('close.bs.alert'))

    if (e.isDefaultPrevented()) return

    $parent.removeClass('in')

    function removeElement() {
      // detach from parent, fire event then clean up data
      $parent.detach().trigger('closed.bs.alert').remove()
    }

    $.support.transition && $parent.hasClass('fade') ?
      $parent
        .one('bsTransitionEnd', removeElement)
        .emulateTransitionEnd(Alert.TRANSITION_DURATION) :
      removeElement()
  }


  // ALERT PLUGIN DEFINITION
  // =======================

  function Plugin(option) {
    return this.each(function () {
      var $this = $(this)
      var data  = $this.data('bs.alert')

      if (!data) $this.data('bs.alert', (data = new Alert(this)))
      if (typeof option == 'string') data[option].call($this)
    })
  }

  var old = $.fn.alert

  $.fn.alert             = Plugin
  $.fn.alert.Constructor = Alert


  // ALERT NO CONFLICT
  // =================

  $.fn.alert.noConflict = function () {
    $.fn.alert = old
    return this
  }


  // ALERT DATA-API
  // ==============

  $(document).on('click.bs.alert.data-api', dismiss, Alert.prototype.close)

}(jQuery);
/* ========================================================================
 * Bootstrap: button.js v3.3.7
 * http://getbootstrap.com/javascript/#buttons
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // BUTTON PUBLIC CLASS DEFINITION
  // ==============================

  var Button = function (element, options) {
    this.$element  = $(element)
    this.options   = $.extend({}, Button.DEFAULTS, options)
    this.isLoading = false
  }

  Button.VERSION  = '3.3.7'

  Button.DEFAULTS = {
    loadingText: 'loading...'
  }

  Button.prototype.setState = function (state) {
    var d    = 'disabled'
    var $el  = this.$element
    var val  = $el.is('input') ? 'val' : 'html'
    var data = $el.data()

    state += 'Text'

    if (data.resetText == null) $el.data('resetText', $el[val]())

    // push to event loop to allow forms to submit
    setTimeout($.proxy(function () {
      $el[val](data[state] == null ? this.options[state] : data[state])

      if (state == 'loadingText') {
        this.isLoading = true
        $el.addClass(d).attr(d, d).prop(d, true)
      } else if (this.isLoading) {
        this.isLoading = false
        $el.removeClass(d).removeAttr(d).prop(d, false)
      }
    }, this), 0)
  }

  Button.prototype.toggle = function () {
    var changed = true
    var $parent = this.$element.closest('[data-toggle="buttons"]')

    if ($parent.length) {
      var $input = this.$element.find('input')
      if ($input.prop('type') == 'radio') {
        if ($input.prop('checked')) changed = false
        $parent.find('.active').removeClass('active')
        this.$element.addClass('active')
      } else if ($input.prop('type') == 'checkbox') {
        if (($input.prop('checked')) !== this.$element.hasClass('active')) changed = false
        this.$element.toggleClass('active')
      }
      $input.prop('checked', this.$element.hasClass('active'))
      if (changed) $input.trigger('change')
    } else {
      this.$element.attr('aria-pressed', !this.$element.hasClass('active'))
      this.$element.toggleClass('active')
    }
  }


  // BUTTON PLUGIN DEFINITION
  // ========================

  function Plugin(option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.button')
      var options = typeof option == 'object' && option

      if (!data) $this.data('bs.button', (data = new Button(this, options)))

      if (option == 'toggle') data.toggle()
      else if (option) data.setState(option)
    })
  }

  var old = $.fn.button

  $.fn.button             = Plugin
  $.fn.button.Constructor = Button


  // BUTTON NO CONFLICT
  // ==================

  $.fn.button.noConflict = function () {
    $.fn.button = old
    return this
  }


  // BUTTON DATA-API
  // ===============

  $(document)
    .on('click.bs.button.data-api', '[data-toggle^="button"]', function (e) {
      var $btn = $(e.target).closest('.btn')
      Plugin.call($btn, 'toggle')
      if (!($(e.target).is('input[type="radio"], input[type="checkbox"]'))) {
        // Prevent double click on radios, and the double selections (so cancellation) on checkboxes
        e.preventDefault()
        // The target component still receive the focus
        if ($btn.is('input,button')) $btn.trigger('focus')
        else $btn.find('input:visible,button:visible').first().trigger('focus')
      }
    })
    .on('focus.bs.button.data-api blur.bs.button.data-api', '[data-toggle^="button"]', function (e) {
      $(e.target).closest('.btn').toggleClass('focus', /^focus(in)?$/.test(e.type))
    })

}(jQuery);
/* ========================================================================
 * Bootstrap: carousel.js v3.3.7
 * http://getbootstrap.com/javascript/#carousel
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // CAROUSEL CLASS DEFINITION
  // =========================

  var Carousel = function (element, options) {
    this.$element    = $(element)
    this.$indicators = this.$element.find('.carousel-indicators')
    this.options     = options
    this.paused      = null
    this.sliding     = null
    this.interval    = null
    this.$active     = null
    this.$items      = null

    this.options.keyboard && this.$element.on('keydown.bs.carousel', $.proxy(this.keydown, this))

    this.options.pause == 'hover' && !('ontouchstart' in document.documentElement) && this.$element
      .on('mouseenter.bs.carousel', $.proxy(this.pause, this))
      .on('mouseleave.bs.carousel', $.proxy(this.cycle, this))
  }

  Carousel.VERSION  = '3.3.7'

  Carousel.TRANSITION_DURATION = 600

  Carousel.DEFAULTS = {
    interval: 5000,
    pause: 'hover',
    wrap: true,
    keyboard: true
  }

  Carousel.prototype.keydown = function (e) {
    if (/input|textarea/i.test(e.target.tagName)) return
    switch (e.which) {
      case 37: this.prev(); break
      case 39: this.next(); break
      default: return
    }

    e.preventDefault()
  }

  Carousel.prototype.cycle = function (e) {
    e || (this.paused = false)

    this.interval && clearInterval(this.interval)

    this.options.interval
      && !this.paused
      && (this.interval = setInterval($.proxy(this.next, this), this.options.interval))

    return this
  }

  Carousel.prototype.getItemIndex = function (item) {
    this.$items = item.parent().children('.item')
    return this.$items.index(item || this.$active)
  }

  Carousel.prototype.getItemForDirection = function (direction, active) {
    var activeIndex = this.getItemIndex(active)
    var willWrap = (direction == 'prev' && activeIndex === 0)
                || (direction == 'next' && activeIndex == (this.$items.length - 1))
    if (willWrap && !this.options.wrap) return active
    var delta = direction == 'prev' ? -1 : 1
    var itemIndex = (activeIndex + delta) % this.$items.length
    return this.$items.eq(itemIndex)
  }

  Carousel.prototype.to = function (pos) {
    var that        = this
    var activeIndex = this.getItemIndex(this.$active = this.$element.find('.item.active'))

    if (pos > (this.$items.length - 1) || pos < 0) return

    if (this.sliding)       return this.$element.one('slid.bs.carousel', function () { that.to(pos) }) // yes, "slid"
    if (activeIndex == pos) return this.pause().cycle()

    return this.slide(pos > activeIndex ? 'next' : 'prev', this.$items.eq(pos))
  }

  Carousel.prototype.pause = function (e) {
    e || (this.paused = true)

    if (this.$element.find('.next, .prev').length && $.support.transition) {
      this.$element.trigger($.support.transition.end)
      this.cycle(true)
    }

    this.interval = clearInterval(this.interval)

    return this
  }

  Carousel.prototype.next = function () {
    if (this.sliding) return
    return this.slide('next')
  }

  Carousel.prototype.prev = function () {
    if (this.sliding) return
    return this.slide('prev')
  }

  Carousel.prototype.slide = function (type, next) {
    var $active   = this.$element.find('.item.active')
    var $next     = next || this.getItemForDirection(type, $active)
    var isCycling = this.interval
    var direction = type == 'next' ? 'left' : 'right'
    var that      = this

    if ($next.hasClass('active')) return (this.sliding = false)

    var relatedTarget = $next[0]
    var slideEvent = $.Event('slide.bs.carousel', {
      relatedTarget: relatedTarget,
      direction: direction
    })
    this.$element.trigger(slideEvent)
    if (slideEvent.isDefaultPrevented()) return

    this.sliding = true

    isCycling && this.pause()

    if (this.$indicators.length) {
      this.$indicators.find('.active').removeClass('active')
      var $nextIndicator = $(this.$indicators.children()[this.getItemIndex($next)])
      $nextIndicator && $nextIndicator.addClass('active')
    }

    var slidEvent = $.Event('slid.bs.carousel', { relatedTarget: relatedTarget, direction: direction }) // yes, "slid"
    if ($.support.transition && this.$element.hasClass('slide')) {
      $next.addClass(type)
      $next[0].offsetWidth // force reflow
      $active.addClass(direction)
      $next.addClass(direction)
      $active
        .one('bsTransitionEnd', function () {
          $next.removeClass([type, direction].join(' ')).addClass('active')
          $active.removeClass(['active', direction].join(' '))
          that.sliding = false
          setTimeout(function () {
            that.$element.trigger(slidEvent)
          }, 0)
        })
        .emulateTransitionEnd(Carousel.TRANSITION_DURATION)
    } else {
      $active.removeClass('active')
      $next.addClass('active')
      this.sliding = false
      this.$element.trigger(slidEvent)
    }

    isCycling && this.cycle()

    return this
  }


  // CAROUSEL PLUGIN DEFINITION
  // ==========================

  function Plugin(option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.carousel')
      var options = $.extend({}, Carousel.DEFAULTS, $this.data(), typeof option == 'object' && option)
      var action  = typeof option == 'string' ? option : options.slide

      if (!data) $this.data('bs.carousel', (data = new Carousel(this, options)))
      if (typeof option == 'number') data.to(option)
      else if (action) data[action]()
      else if (options.interval) data.pause().cycle()
    })
  }

  var old = $.fn.carousel

  $.fn.carousel             = Plugin
  $.fn.carousel.Constructor = Carousel


  // CAROUSEL NO CONFLICT
  // ====================

  $.fn.carousel.noConflict = function () {
    $.fn.carousel = old
    return this
  }


  // CAROUSEL DATA-API
  // =================

  var clickHandler = function (e) {
    var href
    var $this   = $(this)
    var $target = $($this.attr('data-target') || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) // strip for ie7
    if (!$target.hasClass('carousel')) return
    var options = $.extend({}, $target.data(), $this.data())
    var slideIndex = $this.attr('data-slide-to')
    if (slideIndex) options.interval = false

    Plugin.call($target, options)

    if (slideIndex) {
      $target.data('bs.carousel').to(slideIndex)
    }

    e.preventDefault()
  }

  $(document)
    .on('click.bs.carousel.data-api', '[data-slide]', clickHandler)
    .on('click.bs.carousel.data-api', '[data-slide-to]', clickHandler)

  $(window).on('load', function () {
    $('[data-ride="carousel"]').each(function () {
      var $carousel = $(this)
      Plugin.call($carousel, $carousel.data())
    })
  })

}(jQuery);
/* ========================================================================
 * Bootstrap: collapse.js v3.3.7
 * http://getbootstrap.com/javascript/#collapse
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */

/* jshint latedef: false */


+function ($) {
  'use strict';

  // COLLAPSE PUBLIC CLASS DEFINITION
  // ================================

  var Collapse = function (element, options) {
    this.$element      = $(element)
    this.options       = $.extend({}, Collapse.DEFAULTS, options)
    this.$trigger      = $('[data-toggle="collapse"][href="#' + element.id + '"],' +
                           '[data-toggle="collapse"][data-target="#' + element.id + '"]')
    this.transitioning = null

    if (this.options.parent) {
      this.$parent = this.getParent()
    } else {
      this.addAriaAndCollapsedClass(this.$element, this.$trigger)
    }

    if (this.options.toggle) this.toggle()
  }

  Collapse.VERSION  = '3.3.7'

  Collapse.TRANSITION_DURATION = 350

  Collapse.DEFAULTS = {
    toggle: true
  }

  Collapse.prototype.dimension = function () {
    var hasWidth = this.$element.hasClass('width')
    return hasWidth ? 'width' : 'height'
  }

  Collapse.prototype.show = function () {
    if (this.transitioning || this.$element.hasClass('in')) return

    var activesData
    var actives = this.$parent && this.$parent.children('.panel').children('.in, .collapsing')

    if (actives && actives.length) {
      activesData = actives.data('bs.collapse')
      if (activesData && activesData.transitioning) return
    }

    var startEvent = $.Event('show.bs.collapse')
    this.$element.trigger(startEvent)
    if (startEvent.isDefaultPrevented()) return

    if (actives && actives.length) {
      Plugin.call(actives, 'hide')
      activesData || actives.data('bs.collapse', null)
    }

    var dimension = this.dimension()

    this.$element
      .removeClass('collapse')
      .addClass('collapsing')[dimension](0)
      .attr('aria-expanded', true)

    this.$trigger
      .removeClass('collapsed')
      .attr('aria-expanded', true)

    this.transitioning = 1

    var complete = function () {
      this.$element
        .removeClass('collapsing')
        .addClass('collapse in')[dimension]('')
      this.transitioning = 0
      this.$element
        .trigger('shown.bs.collapse')
    }

    if (!$.support.transition) return complete.call(this)

    var scrollSize = $.camelCase(['scroll', dimension].join('-'))

    this.$element
      .one('bsTransitionEnd', $.proxy(complete, this))
      .emulateTransitionEnd(Collapse.TRANSITION_DURATION)[dimension](this.$element[0][scrollSize])
  }

  Collapse.prototype.hide = function () {
    if (this.transitioning || !this.$element.hasClass('in')) return

    var startEvent = $.Event('hide.bs.collapse')
    this.$element.trigger(startEvent)
    if (startEvent.isDefaultPrevented()) return

    var dimension = this.dimension()

    this.$element[dimension](this.$element[dimension]())[0].offsetHeight

    this.$element
      .addClass('collapsing')
      .removeClass('collapse in')
      .attr('aria-expanded', false)

    this.$trigger
      .addClass('collapsed')
      .attr('aria-expanded', false)

    this.transitioning = 1

    var complete = function () {
      this.transitioning = 0
      this.$element
        .removeClass('collapsing')
        .addClass('collapse')
        .trigger('hidden.bs.collapse')
    }

    if (!$.support.transition) return complete.call(this)

    this.$element
      [dimension](0)
      .one('bsTransitionEnd', $.proxy(complete, this))
      .emulateTransitionEnd(Collapse.TRANSITION_DURATION)
  }

  Collapse.prototype.toggle = function () {
    this[this.$element.hasClass('in') ? 'hide' : 'show']()
  }

  Collapse.prototype.getParent = function () {
    return $(this.options.parent)
      .find('[data-toggle="collapse"][data-parent="' + this.options.parent + '"]')
      .each($.proxy(function (i, element) {
        var $element = $(element)
        this.addAriaAndCollapsedClass(getTargetFromTrigger($element), $element)
      }, this))
      .end()
  }

  Collapse.prototype.addAriaAndCollapsedClass = function ($element, $trigger) {
    var isOpen = $element.hasClass('in')

    $element.attr('aria-expanded', isOpen)
    $trigger
      .toggleClass('collapsed', !isOpen)
      .attr('aria-expanded', isOpen)
  }

  function getTargetFromTrigger($trigger) {
    var href
    var target = $trigger.attr('data-target')
      || (href = $trigger.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') // strip for ie7

    return $(target)
  }


  // COLLAPSE PLUGIN DEFINITION
  // ==========================

  function Plugin(option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.collapse')
      var options = $.extend({}, Collapse.DEFAULTS, $this.data(), typeof option == 'object' && option)

      if (!data && options.toggle && /show|hide/.test(option)) options.toggle = false
      if (!data) $this.data('bs.collapse', (data = new Collapse(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  var old = $.fn.collapse

  $.fn.collapse             = Plugin
  $.fn.collapse.Constructor = Collapse


  // COLLAPSE NO CONFLICT
  // ====================

  $.fn.collapse.noConflict = function () {
    $.fn.collapse = old
    return this
  }


  // COLLAPSE DATA-API
  // =================

  $(document).on('click.bs.collapse.data-api', '[data-toggle="collapse"]', function (e) {
    var $this   = $(this)

    if (!$this.attr('data-target')) e.preventDefault()

    var $target = getTargetFromTrigger($this)
    var data    = $target.data('bs.collapse')
    var option  = data ? 'toggle' : $this.data()

    Plugin.call($target, option)
  })

}(jQuery);
/* ========================================================================
 * Bootstrap: dropdown.js v3.3.7
 * http://getbootstrap.com/javascript/#dropdowns
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // DROPDOWN CLASS DEFINITION
  // =========================

  var backdrop = '.dropdown-backdrop'
  var toggle   = '[data-toggle="dropdown"]'
  var Dropdown = function (element) {
    $(element).on('click.bs.dropdown', this.toggle)
  }

  Dropdown.VERSION = '3.3.7'

  function getParent($this) {
    var selector = $this.attr('data-target')

    if (!selector) {
      selector = $this.attr('href')
      selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
    }

    var $parent = selector && $(selector)

    return $parent && $parent.length ? $parent : $this.parent()
  }

  function clearMenus(e) {
    if (e && e.which === 3) return
    $(backdrop).remove()
    $(toggle).each(function () {
      var $this         = $(this)
      var $parent       = getParent($this)
      var relatedTarget = { relatedTarget: this }

      if (!$parent.hasClass('open')) return

      if (e && e.type == 'click' && /input|textarea/i.test(e.target.tagName) && $.contains($parent[0], e.target)) return

      $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))

      if (e.isDefaultPrevented()) return

      $this.attr('aria-expanded', 'false')
      $parent.removeClass('open').trigger($.Event('hidden.bs.dropdown', relatedTarget))
    })
  }

  Dropdown.prototype.toggle = function (e) {
    var $this = $(this)

    if ($this.is('.disabled, :disabled')) return

    var $parent  = getParent($this)
    var isActive = $parent.hasClass('open')

    clearMenus()

    if (!isActive) {
      if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) {
        // if mobile we use a backdrop because click events don't delegate
        $(document.createElement('div'))
          .addClass('dropdown-backdrop')
          .insertAfter($(this))
          .on('click', clearMenus)
      }

      var relatedTarget = { relatedTarget: this }
      $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))

      if (e.isDefaultPrevented()) return

      $this
        .trigger('focus')
        .attr('aria-expanded', 'true')

      $parent
        .toggleClass('open')
        .trigger($.Event('shown.bs.dropdown', relatedTarget))
    }

    return false
  }

  Dropdown.prototype.keydown = function (e) {
    if (!/(38|40|27|32)/.test(e.which) || /input|textarea/i.test(e.target.tagName)) return

    var $this = $(this)

    e.preventDefault()
    e.stopPropagation()

    if ($this.is('.disabled, :disabled')) return

    var $parent  = getParent($this)
    var isActive = $parent.hasClass('open')

    if (!isActive && e.which != 27 || isActive && e.which == 27) {
      if (e.which == 27) $parent.find(toggle).trigger('focus')
      return $this.trigger('click')
    }

    var desc = ' li:not(.disabled):visible a'
    var $items = $parent.find('.dropdown-menu' + desc)

    if (!$items.length) return

    var index = $items.index(e.target)

    if (e.which == 38 && index > 0)                 index--         // up
    if (e.which == 40 && index < $items.length - 1) index++         // down
    if (!~index)                                    index = 0

    $items.eq(index).trigger('focus')
  }


  // DROPDOWN PLUGIN DEFINITION
  // ==========================

  function Plugin(option) {
    return this.each(function () {
      var $this = $(this)
      var data  = $this.data('bs.dropdown')

      if (!data) $this.data('bs.dropdown', (data = new Dropdown(this)))
      if (typeof option == 'string') data[option].call($this)
    })
  }

  var old = $.fn.dropdown

  $.fn.dropdown             = Plugin
  $.fn.dropdown.Constructor = Dropdown


  // DROPDOWN NO CONFLICT
  // ====================

  $.fn.dropdown.noConflict = function () {
    $.fn.dropdown = old
    return this
  }


  // APPLY TO STANDARD DROPDOWN ELEMENTS
  // ===================================

  $(document)
    .on('click.bs.dropdown.data-api', clearMenus)
    .on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
    .on('click.bs.dropdown.data-api', toggle, Dropdown.prototype.toggle)
    .on('keydown.bs.dropdown.data-api', toggle, Dropdown.prototype.keydown)
    .on('keydown.bs.dropdown.data-api', '.dropdown-menu', Dropdown.prototype.keydown)

}(jQuery);
/* ========================================================================
 * Bootstrap: modal.js v3.3.7
 * http://getbootstrap.com/javascript/#modals
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // MODAL CLASS DEFINITION
  // ======================

  var Modal = function (element, options) {
    this.options             = options
    this.$body               = $(document.body)
    this.$element            = $(element)
    this.$dialog             = this.$element.find('.modal-dialog')
    this.$backdrop           = null
    this.isShown             = null
    this.originalBodyPad     = null
    this.scrollbarWidth      = 0
    this.ignoreBackdropClick = false

    if (this.options.remote) {
      this.$element
        .find('.modal-content')
        .load(this.options.remote, $.proxy(function () {
          this.$element.trigger('loaded.bs.modal')
        }, this))
    }
  }

  Modal.VERSION  = '3.3.7'

  Modal.TRANSITION_DURATION = 300
  Modal.BACKDROP_TRANSITION_DURATION = 150

  Modal.DEFAULTS = {
    backdrop: true,
    keyboard: true,
    show: true
  }

  Modal.prototype.toggle = function (_relatedTarget) {
    return this.isShown ? this.hide() : this.show(_relatedTarget)
  }

  Modal.prototype.show = function (_relatedTarget) {
    var that = this
    var e    = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })

    this.$element.trigger(e)

    if (this.isShown || e.isDefaultPrevented()) return

    this.isShown = true

    this.checkScrollbar()
    this.setScrollbar()
    this.$body.addClass('modal-open')

    this.escape()
    this.resize()

    this.$element.on('click.dismiss.bs.modal', '[data-dismiss="modal"]', $.proxy(this.hide, this))

    this.$dialog.on('mousedown.dismiss.bs.modal', function () {
      that.$element.one('mouseup.dismiss.bs.modal', function (e) {
        if ($(e.target).is(that.$element)) that.ignoreBackdropClick = true
      })
    })

    this.backdrop(function () {
      var transition = $.support.transition && that.$element.hasClass('fade')

      if (!that.$element.parent().length) {
        that.$element.appendTo(that.$body) // don't move modals dom position
      }

      that.$element
        .show()
        .scrollTop(0)

      that.adjustDialog()

      if (transition) {
        that.$element[0].offsetWidth // force reflow
      }

      that.$element.addClass('in')

      that.enforceFocus()

      var e = $.Event('shown.bs.modal', { relatedTarget: _relatedTarget })

      transition ?
        that.$dialog // wait for modal to slide in
          .one('bsTransitionEnd', function () {
            that.$element.trigger('focus').trigger(e)
          })
          .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
        that.$element.trigger('focus').trigger(e)
    })
  }

  Modal.prototype.hide = function (e) {
    if (e) e.preventDefault()

    e = $.Event('hide.bs.modal')

    this.$element.trigger(e)

    if (!this.isShown || e.isDefaultPrevented()) return

    this.isShown = false

    this.escape()
    this.resize()

    $(document).off('focusin.bs.modal')

    this.$element
      .removeClass('in')
      .off('click.dismiss.bs.modal')
      .off('mouseup.dismiss.bs.modal')

    this.$dialog.off('mousedown.dismiss.bs.modal')

    $.support.transition && this.$element.hasClass('fade') ?
      this.$element
        .one('bsTransitionEnd', $.proxy(this.hideModal, this))
        .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
      this.hideModal()
  }

  Modal.prototype.enforceFocus = function () {
    $(document)
      .off('focusin.bs.modal') // guard against infinite focus loop
      .on('focusin.bs.modal', $.proxy(function (e) {
        if (document !== e.target &&
            this.$element[0] !== e.target &&
            !this.$element.has(e.target).length) {
          this.$element.trigger('focus')
        }
      }, this))
  }

  Modal.prototype.escape = function () {
    if (this.isShown && this.options.keyboard) {
      this.$element.on('keydown.dismiss.bs.modal', $.proxy(function (e) {
        e.which == 27 && this.hide()
      }, this))
    } else if (!this.isShown) {
      this.$element.off('keydown.dismiss.bs.modal')
    }
  }

  Modal.prototype.resize = function () {
    if (this.isShown) {
      $(window).on('resize.bs.modal', $.proxy(this.handleUpdate, this))
    } else {
      $(window).off('resize.bs.modal')
    }
  }

  Modal.prototype.hideModal = function () {
    var that = this
    this.$element.hide()
    this.backdrop(function () {
      that.$body.removeClass('modal-open')
      that.resetAdjustments()
      that.resetScrollbar()
      that.$element.trigger('hidden.bs.modal')
    })
  }

  Modal.prototype.removeBackdrop = function () {
    this.$backdrop && this.$backdrop.remove()
    this.$backdrop = null
  }

  Modal.prototype.backdrop = function (callback) {
    var that = this
    var animate = this.$element.hasClass('fade') ? 'fade' : ''

    if (this.isShown && this.options.backdrop) {
      var doAnimate = $.support.transition && animate

      this.$backdrop = $(document.createElement('div'))
        .addClass('modal-backdrop ' + animate)
        .appendTo(this.$body)

      this.$element.on('click.dismiss.bs.modal', $.proxy(function (e) {
        if (this.ignoreBackdropClick) {
          this.ignoreBackdropClick = false
          return
        }
        if (e.target !== e.currentTarget) return
        this.options.backdrop == 'static'
          ? this.$element[0].focus()
          : this.hide()
      }, this))

      if (doAnimate) this.$backdrop[0].offsetWidth // force reflow

      this.$backdrop.addClass('in')

      if (!callback) return

      doAnimate ?
        this.$backdrop
          .one('bsTransitionEnd', callback)
          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
        callback()

    } else if (!this.isShown && this.$backdrop) {
      this.$backdrop.removeClass('in')

      var callbackRemove = function () {
        that.removeBackdrop()
        callback && callback()
      }
      $.support.transition && this.$element.hasClass('fade') ?
        this.$backdrop
          .one('bsTransitionEnd', callbackRemove)
          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
        callbackRemove()

    } else if (callback) {
      callback()
    }
  }

  // these following methods are used to handle overflowing modals

  Modal.prototype.handleUpdate = function () {
    this.adjustDialog()
  }

  Modal.prototype.adjustDialog = function () {
    var modalIsOverflowing = this.$element[0].scrollHeight > document.documentElement.clientHeight

    this.$element.css({
      paddingLeft:  !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : '',
      paddingRight: this.bodyIsOverflowing && !modalIsOverflowing ? this.scrollbarWidth : ''
    })
  }

  Modal.prototype.resetAdjustments = function () {
    this.$element.css({
      paddingLeft: '',
      paddingRight: ''
    })
  }

  Modal.prototype.checkScrollbar = function () {
    var fullWindowWidth = window.innerWidth
    if (!fullWindowWidth) { // workaround for missing window.innerWidth in IE8
      var documentElementRect = document.documentElement.getBoundingClientRect()
      fullWindowWidth = documentElementRect.right - Math.abs(documentElementRect.left)
    }
    this.bodyIsOverflowing = document.body.clientWidth < fullWindowWidth
    this.scrollbarWidth = this.measureScrollbar()
  }

  Modal.prototype.setScrollbar = function () {
    var bodyPad = parseInt((this.$body.css('padding-right') || 0), 10)
    this.originalBodyPad = document.body.style.paddingRight || ''
    if (this.bodyIsOverflowing) this.$body.css('padding-right', bodyPad + this.scrollbarWidth)
  }

  Modal.prototype.resetScrollbar = function () {
    this.$body.css('padding-right', this.originalBodyPad)
  }

  Modal.prototype.measureScrollbar = function () { // thx walsh
    var scrollDiv = document.createElement('div')
    scrollDiv.className = 'modal-scrollbar-measure'
    this.$body.append(scrollDiv)
    var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth
    this.$body[0].removeChild(scrollDiv)
    return scrollbarWidth
  }


  // MODAL PLUGIN DEFINITION
  // =======================

  function Plugin(option, _relatedTarget) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.modal')
      var options = $.extend({}, Modal.DEFAULTS, $this.data(), typeof option == 'object' && option)

      if (!data) $this.data('bs.modal', (data = new Modal(this, options)))
      if (typeof option == 'string') data[option](_relatedTarget)
      else if (options.show) data.show(_relatedTarget)
    })
  }

  var old = $.fn.modal

  $.fn.modal             = Plugin
  $.fn.modal.Constructor = Modal


  // MODAL NO CONFLICT
  // =================

  $.fn.modal.noConflict = function () {
    $.fn.modal = old
    return this
  }


  // MODAL DATA-API
  // ==============

  $(document).on('click.bs.modal.data-api', '[data-toggle="modal"]', function (e) {
    var $this   = $(this)
    var href    = $this.attr('href')
    var $target = $($this.attr('data-target') || (href && href.replace(/.*(?=#[^\s]+$)/, ''))) // strip for ie7
    var option  = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())

    if ($this.is('a')) e.preventDefault()

    $target.one('show.bs.modal', function (showEvent) {
      if (showEvent.isDefaultPrevented()) return // only register focus restorer if modal will actually get shown
      $target.one('hidden.bs.modal', function () {
        $this.is(':visible') && $this.trigger('focus')
      })
    })
    Plugin.call($target, option, this)
  })

}(jQuery);
/* ========================================================================
 * Bootstrap: tab.js v3.3.7
 * http://getbootstrap.com/javascript/#tabs
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // TAB CLASS DEFINITION
  // ====================

  var Tab = function (element) {
    // jscs:disable requireDollarBeforejQueryAssignment
    this.element = $(element)
    // jscs:enable requireDollarBeforejQueryAssignment
  }

  Tab.VERSION = '3.3.7'

  Tab.TRANSITION_DURATION = 150

  Tab.prototype.show = function () {
    var $this    = this.element
    var $ul      = $this.closest('ul:not(.dropdown-menu)')
    var selector = $this.data('target')

    if (!selector) {
      selector = $this.attr('href')
      selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
    }

    if ($this.parent('li').hasClass('active')) return

    var $previous = $ul.find('.active:last a')
    var hideEvent = $.Event('hide.bs.tab', {
      relatedTarget: $this[0]
    })
    var showEvent = $.Event('show.bs.tab', {
      relatedTarget: $previous[0]
    })

    $previous.trigger(hideEvent)
    $this.trigger(showEvent)

    if (showEvent.isDefaultPrevented() || hideEvent.isDefaultPrevented()) return

    var $target = $(selector)

    this.activate($this.closest('li'), $ul)
    this.activate($target, $target.parent(), function () {
      $previous.trigger({
        type: 'hidden.bs.tab',
        relatedTarget: $this[0]
      })
      $this.trigger({
        type: 'shown.bs.tab',
        relatedTarget: $previous[0]
      })
    })
  }

  Tab.prototype.activate = function (element, container, callback) {
    var $active    = container.find('> .active')
    var transition = callback
      && $.support.transition
      && ($active.length && $active.hasClass('fade') || !!container.find('> .fade').length)

    function next() {
      $active
        .removeClass('active')
        .find('> .dropdown-menu > .active')
          .removeClass('active')
        .end()
        .find('[data-toggle="tab"]')
          .attr('aria-expanded', false)

      element
        .addClass('active')
        .find('[data-toggle="tab"]')
          .attr('aria-expanded', true)

      if (transition) {
        element[0].offsetWidth // reflow for transition
        element.addClass('in')
      } else {
        element.removeClass('fade')
      }

      if (element.parent('.dropdown-menu').length) {
        element
          .closest('li.dropdown')
            .addClass('active')
          .end()
          .find('[data-toggle="tab"]')
            .attr('aria-expanded', true)
      }

      callback && callback()
    }

    $active.length && transition ?
      $active
        .one('bsTransitionEnd', next)
        .emulateTransitionEnd(Tab.TRANSITION_DURATION) :
      next()

    $active.removeClass('in')
  }


  // TAB PLUGIN DEFINITION
  // =====================

  function Plugin(option) {
    return this.each(function () {
      var $this = $(this)
      var data  = $this.data('bs.tab')

      if (!data) $this.data('bs.tab', (data = new Tab(this)))
      if (typeof option == 'string') data[option]()
    })
  }

  var old = $.fn.tab

  $.fn.tab             = Plugin
  $.fn.tab.Constructor = Tab


  // TAB NO CONFLICT
  // ===============

  $.fn.tab.noConflict = function () {
    $.fn.tab = old
    return this
  }


  // TAB DATA-API
  // ============

  var clickHandler = function (e) {
    e.preventDefault()
    Plugin.call($(this), 'show')
  }

  $(document)
    .on('click.bs.tab.data-api', '[data-toggle="tab"]', clickHandler)
    .on('click.bs.tab.data-api', '[data-toggle="pill"]', clickHandler)

}(jQuery);
/* ========================================================================
 * Bootstrap: affix.js v3.3.7
 * http://getbootstrap.com/javascript/#affix
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // AFFIX CLASS DEFINITION
  // ======================

  var Affix = function (element, options) {
    this.options = $.extend({}, Affix.DEFAULTS, options)

    this.$target = $(this.options.target)
      .on('scroll.bs.affix.data-api', $.proxy(this.checkPosition, this))
      .on('click.bs.affix.data-api',  $.proxy(this.checkPositionWithEventLoop, this))

    this.$element     = $(element)
    this.affixed      = null
    this.unpin        = null
    this.pinnedOffset = null

    this.checkPosition()
  }

  Affix.VERSION  = '3.3.7'

  Affix.RESET    = 'affix affix-top affix-bottom'

  Affix.DEFAULTS = {
    offset: 0,
    target: window
  }

  Affix.prototype.getState = function (scrollHeight, height, offsetTop, offsetBottom) {
    var scrollTop    = this.$target.scrollTop()
    var position     = this.$element.offset()
    var targetHeight = this.$target.height()

    if (offsetTop != null && this.affixed == 'top') return scrollTop < offsetTop ? 'top' : false

    if (this.affixed == 'bottom') {
      if (offsetTop != null) return (scrollTop + this.unpin <= position.top) ? false : 'bottom'
      return (scrollTop + targetHeight <= scrollHeight - offsetBottom) ? false : 'bottom'
    }

    var initializing   = this.affixed == null
    var colliderTop    = initializing ? scrollTop : position.top
    var colliderHeight = initializing ? targetHeight : height

    if (offsetTop != null && scrollTop <= offsetTop) return 'top'
    if (offsetBottom != null && (colliderTop + colliderHeight >= scrollHeight - offsetBottom)) return 'bottom'

    return false
  }

  Affix.prototype.getPinnedOffset = function () {
    if (this.pinnedOffset) return this.pinnedOffset
    this.$element.removeClass(Affix.RESET).addClass('affix')
    var scrollTop = this.$target.scrollTop()
    var position  = this.$element.offset()
    return (this.pinnedOffset = position.top - scrollTop)
  }

  Affix.prototype.checkPositionWithEventLoop = function () {
    setTimeout($.proxy(this.checkPosition, this), 1)
  }

  Affix.prototype.checkPosition = function () {
    if (!this.$element.is(':visible')) return

    var height       = this.$element.height()
    var offset       = this.options.offset
    var offsetTop    = offset.top
    var offsetBottom = offset.bottom
    var scrollHeight = Math.max($(document).height(), $(document.body).height())

    if (typeof offset != 'object')         offsetBottom = offsetTop = offset
    if (typeof offsetTop == 'function')    offsetTop    = offset.top(this.$element)
    if (typeof offsetBottom == 'function') offsetBottom = offset.bottom(this.$element)

    var affix = this.getState(scrollHeight, height, offsetTop, offsetBottom)

    if (this.affixed != affix) {
      if (this.unpin != null) this.$element.css('top', '')

      var affixType = 'affix' + (affix ? '-' + affix : '')
      var e         = $.Event(affixType + '.bs.affix')

      this.$element.trigger(e)

      if (e.isDefaultPrevented()) return

      this.affixed = affix
      this.unpin = affix == 'bottom' ? this.getPinnedOffset() : null

      this.$element
        .removeClass(Affix.RESET)
        .addClass(affixType)
        .trigger(affixType.replace('affix', 'affixed') + '.bs.affix')
    }

    if (affix == 'bottom') {
      this.$element.offset({
        top: scrollHeight - height - offsetBottom
      })
    }
  }


  // AFFIX PLUGIN DEFINITION
  // =======================

  function Plugin(option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.affix')
      var options = typeof option == 'object' && option

      if (!data) $this.data('bs.affix', (data = new Affix(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  var old = $.fn.affix

  $.fn.affix             = Plugin
  $.fn.affix.Constructor = Affix


  // AFFIX NO CONFLICT
  // =================

  $.fn.affix.noConflict = function () {
    $.fn.affix = old
    return this
  }


  // AFFIX DATA-API
  // ==============

  $(window).on('load', function () {
    $('[data-spy="affix"]').each(function () {
      var $spy = $(this)
      var data = $spy.data()

      data.offset = data.offset || {}

      if (data.offsetBottom != null) data.offset.bottom = data.offsetBottom
      if (data.offsetTop    != null) data.offset.top    = data.offsetTop

      Plugin.call($spy, data)
    })
  })

}(jQuery);
/* ========================================================================
 * Bootstrap: scrollspy.js v3.3.7
 * http://getbootstrap.com/javascript/#scrollspy
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // SCROLLSPY CLASS DEFINITION
  // ==========================

  function ScrollSpy(element, options) {
    this.$body          = $(document.body)
    this.$scrollElement = $(element).is(document.body) ? $(window) : $(element)
    this.options        = $.extend({}, ScrollSpy.DEFAULTS, options)
    this.selector       = (this.options.target || '') + ' .nav li > a'
    this.offsets        = []
    this.targets        = []
    this.activeTarget   = null
    this.scrollHeight   = 0

    this.$scrollElement.on('scroll.bs.scrollspy', $.proxy(this.process, this))
    this.refresh()
    this.process()
  }

  ScrollSpy.VERSION  = '3.3.7'

  ScrollSpy.DEFAULTS = {
    offset: 10
  }

  ScrollSpy.prototype.getScrollHeight = function () {
    return this.$scrollElement[0].scrollHeight || Math.max(this.$body[0].scrollHeight, document.documentElement.scrollHeight)
  }

  ScrollSpy.prototype.refresh = function () {
    var that          = this
    var offsetMethod  = 'offset'
    var offsetBase    = 0

    this.offsets      = []
    this.targets      = []
    this.scrollHeight = this.getScrollHeight()

    if (!$.isWindow(this.$scrollElement[0])) {
      offsetMethod = 'position'
      offsetBase   = this.$scrollElement.scrollTop()
    }

    this.$body
      .find(this.selector)
      .map(function () {
        var $el   = $(this)
        var href  = $el.data('target') || $el.attr('href')
        var $href = /^#./.test(href) && $(href)

        return ($href
          && $href.length
          && $href.is(':visible')
          && [[$href[offsetMethod]().top + offsetBase, href]]) || null
      })
      .sort(function (a, b) { return a[0] - b[0] })
      .each(function () {
        that.offsets.push(this[0])
        that.targets.push(this[1])
      })
  }

  ScrollSpy.prototype.process = function () {
    var scrollTop    = this.$scrollElement.scrollTop() + this.options.offset
    var scrollHeight = this.getScrollHeight()
    var maxScroll    = this.options.offset + scrollHeight - this.$scrollElement.height()
    var offsets      = this.offsets
    var targets      = this.targets
    var activeTarget = this.activeTarget
    var i

    if (this.scrollHeight != scrollHeight) {
      this.refresh()
    }

    if (scrollTop >= maxScroll) {
      return activeTarget != (i = targets[targets.length - 1]) && this.activate(i)
    }

    if (activeTarget && scrollTop < offsets[0]) {
      this.activeTarget = null
      return this.clear()
    }

    for (i = offsets.length; i--;) {
      activeTarget != targets[i]
        && scrollTop >= offsets[i]
        && (offsets[i + 1] === undefined || scrollTop < offsets[i + 1])
        && this.activate(targets[i])
    }
  }

  ScrollSpy.prototype.activate = function (target) {
    this.activeTarget = target

    this.clear()

    var selector = this.selector +
      '[data-target="' + target + '"],' +
      this.selector + '[href="' + target + '"]'

    var active = $(selector)
      .parents('li')
      .addClass('active')

    if (active.parent('.dropdown-menu').length) {
      active = active
        .closest('li.dropdown')
        .addClass('active')
    }

    active.trigger('activate.bs.scrollspy')
  }

  ScrollSpy.prototype.clear = function () {
    $(this.selector)
      .parentsUntil(this.options.target, '.active')
      .removeClass('active')
  }


  // SCROLLSPY PLUGIN DEFINITION
  // ===========================

  function Plugin(option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.scrollspy')
      var options = typeof option == 'object' && option

      if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  var old = $.fn.scrollspy

  $.fn.scrollspy             = Plugin
  $.fn.scrollspy.Constructor = ScrollSpy


  // SCROLLSPY NO CONFLICT
  // =====================

  $.fn.scrollspy.noConflict = function () {
    $.fn.scrollspy = old
    return this
  }


  // SCROLLSPY DATA-API
  // ==================

  $(window).on('load.bs.scrollspy.data-api', function () {
    $('[data-spy="scroll"]').each(function () {
      var $spy = $(this)
      Plugin.call($spy, $spy.data())
    })
  })

}(jQuery);
/* ========================================================================
 * Bootstrap: tooltip.js v3.3.7
 * http://getbootstrap.com/javascript/#tooltip
 * Inspired by the original jQuery.tipsy by Jason Frame
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // TOOLTIP PUBLIC CLASS DEFINITION
  // ===============================

  var Tooltip = function (element, options) {
    this.type       = null
    this.options    = null
    this.enabled    = null
    this.timeout    = null
    this.hoverState = null
    this.$element   = null
    this.inState    = null

    this.init('tooltip', element, options)
  }

  Tooltip.VERSION  = '3.3.7'

  Tooltip.TRANSITION_DURATION = 150

  Tooltip.DEFAULTS = {
    animation: true,
    placement: 'top',
    selector: false,
    template: '<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',
    trigger: 'hover focus',
    title: '',
    delay: 0,
    html: false,
    container: false,
    viewport: {
      selector: 'body',
      padding: 0
    }
  }

  Tooltip.prototype.init = function (type, element, options) {
    this.enabled   = true
    this.type      = type
    this.$element  = $(element)
    this.options   = this.getOptions(options)
    this.$viewport = this.options.viewport && $($.isFunction(this.options.viewport) ? this.options.viewport.call(this, this.$element) : (this.options.viewport.selector || this.options.viewport))
    this.inState   = { click: false, hover: false, focus: false }

    if (this.$element[0] instanceof document.constructor && !this.options.selector) {
      throw new Error('`selector` option must be specified when initializing ' + this.type + ' on the window.document object!')
    }

    var triggers = this.options.trigger.split(' ')

    for (var i = triggers.length; i--;) {
      var trigger = triggers[i]

      if (trigger == 'click') {
        this.$element.on('click.' + this.type, this.options.selector, $.proxy(this.toggle, this))
      } else if (trigger != 'manual') {
        var eventIn  = trigger == 'hover' ? 'mouseenter' : 'focusin'
        var eventOut = trigger == 'hover' ? 'mouseleave' : 'focusout'

        this.$element.on(eventIn  + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
        this.$element.on(eventOut + '.' + this.type, this.options.selector, $.proxy(this.leave, this))
      }
    }

    this.options.selector ?
      (this._options = $.extend({}, this.options, { trigger: 'manual', selector: '' })) :
      this.fixTitle()
  }

  Tooltip.prototype.getDefaults = function () {
    return Tooltip.DEFAULTS
  }

  Tooltip.prototype.getOptions = function (options) {
    options = $.extend({}, this.getDefaults(), this.$element.data(), options)

    if (options.delay && typeof options.delay == 'number') {
      options.delay = {
        show: options.delay,
        hide: options.delay
      }
    }

    return options
  }

  Tooltip.prototype.getDelegateOptions = function () {
    var options  = {}
    var defaults = this.getDefaults()

    this._options && $.each(this._options, function (key, value) {
      if (defaults[key] != value) options[key] = value
    })

    return options
  }

  Tooltip.prototype.enter = function (obj) {
    var self = obj instanceof this.constructor ?
      obj : $(obj.currentTarget).data('bs.' + this.type)

    if (!self) {
      self = new this.constructor(obj.currentTarget, this.getDelegateOptions())
      $(obj.currentTarget).data('bs.' + this.type, self)
    }

    if (obj instanceof $.Event) {
      self.inState[obj.type == 'focusin' ? 'focus' : 'hover'] = true
    }

    if (self.tip().hasClass('in') || self.hoverState == 'in') {
      self.hoverState = 'in'
      return
    }

    clearTimeout(self.timeout)

    self.hoverState = 'in'

    if (!self.options.delay || !self.options.delay.show) return self.show()

    self.timeout = setTimeout(function () {
      if (self.hoverState == 'in') self.show()
    }, self.options.delay.show)
  }

  Tooltip.prototype.isInStateTrue = function () {
    for (var key in this.inState) {
      if (this.inState[key]) return true
    }

    return false
  }

  Tooltip.prototype.leave = function (obj) {
    var self = obj instanceof this.constructor ?
      obj : $(obj.currentTarget).data('bs.' + this.type)

    if (!self) {
      self = new this.constructor(obj.currentTarget, this.getDelegateOptions())
      $(obj.currentTarget).data('bs.' + this.type, self)
    }

    if (obj instanceof $.Event) {
      self.inState[obj.type == 'focusout' ? 'focus' : 'hover'] = false
    }

    if (self.isInStateTrue()) return

    clearTimeout(self.timeout)

    self.hoverState = 'out'

    if (!self.options.delay || !self.options.delay.hide) return self.hide()

    self.timeout = setTimeout(function () {
      if (self.hoverState == 'out') self.hide()
    }, self.options.delay.hide)
  }

  Tooltip.prototype.show = function () {
    var e = $.Event('show.bs.' + this.type)

    if (this.hasContent() && this.enabled) {
      this.$element.trigger(e)

      var inDom = $.contains(this.$element[0].ownerDocument.documentElement, this.$element[0])
      if (e.isDefaultPrevented() || !inDom) return
      var that = this

      var $tip = this.tip()

      var tipId = this.getUID(this.type)

      this.setContent()
      $tip.attr('id', tipId)
      this.$element.attr('aria-describedby', tipId)

      if (this.options.animation) $tip.addClass('fade')

      var placement = typeof this.options.placement == 'function' ?
        this.options.placement.call(this, $tip[0], this.$element[0]) :
        this.options.placement

      var autoToken = /\s?auto?\s?/i
      var autoPlace = autoToken.test(placement)
      if (autoPlace) placement = placement.replace(autoToken, '') || 'top'

      $tip
        .detach()
        .css({ top: 0, left: 0, display: 'block' })
        .addClass(placement)
        .data('bs.' + this.type, this)

      this.options.container ? $tip.appendTo(this.options.container) : $tip.insertAfter(this.$element)
      this.$element.trigger('inserted.bs.' + this.type)

      var pos          = this.getPosition()
      var actualWidth  = $tip[0].offsetWidth
      var actualHeight = $tip[0].offsetHeight

      if (autoPlace) {
        var orgPlacement = placement
        var viewportDim = this.getPosition(this.$viewport)

        placement = placement == 'bottom' && pos.bottom + actualHeight > viewportDim.bottom ? 'top'    :
                    placement == 'top'    && pos.top    - actualHeight < viewportDim.top    ? 'bottom' :
                    placement == 'right'  && pos.right  + actualWidth  > viewportDim.width  ? 'left'   :
                    placement == 'left'   && pos.left   - actualWidth  < viewportDim.left   ? 'right'  :
                    placement

        $tip
          .removeClass(orgPlacement)
          .addClass(placement)
      }

      var calculatedOffset = this.getCalculatedOffset(placement, pos, actualWidth, actualHeight)

      this.applyPlacement(calculatedOffset, placement)

      var complete = function () {
        var prevHoverState = that.hoverState
        that.$element.trigger('shown.bs.' + that.type)
        that.hoverState = null

        if (prevHoverState == 'out') that.leave(that)
      }

      $.support.transition && this.$tip.hasClass('fade') ?
        $tip
          .one('bsTransitionEnd', complete)
          .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
        complete()
    }
  }

  Tooltip.prototype.applyPlacement = function (offset, placement) {
    var $tip   = this.tip()
    var width  = $tip[0].offsetWidth
    var height = $tip[0].offsetHeight

    // manually read margins because getBoundingClientRect includes difference
    var marginTop = parseInt($tip.css('margin-top'), 10)
    var marginLeft = parseInt($tip.css('margin-left'), 10)

    // we must check for NaN for ie 8/9
    if (isNaN(marginTop))  marginTop  = 0
    if (isNaN(marginLeft)) marginLeft = 0

    offset.top  += marginTop
    offset.left += marginLeft

    // $.fn.offset doesn't round pixel values
    // so we use setOffset directly with our own function B-0
    $.offset.setOffset($tip[0], $.extend({
      using: function (props) {
        $tip.css({
          top: Math.round(props.top),
          left: Math.round(props.left)
        })
      }
    }, offset), 0)

    $tip.addClass('in')

    // check to see if placing tip in new offset caused the tip to resize itself
    var actualWidth  = $tip[0].offsetWidth
    var actualHeight = $tip[0].offsetHeight

    if (placement == 'top' && actualHeight != height) {
      offset.top = offset.top + height - actualHeight
    }

    var delta = this.getViewportAdjustedDelta(placement, offset, actualWidth, actualHeight)

    if (delta.left) offset.left += delta.left
    else offset.top += delta.top

    var isVertical          = /top|bottom/.test(placement)
    var arrowDelta          = isVertical ? delta.left * 2 - width + actualWidth : delta.top * 2 - height + actualHeight
    var arrowOffsetPosition = isVertical ? 'offsetWidth' : 'offsetHeight'

    $tip.offset(offset)
    this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], isVertical)
  }

  Tooltip.prototype.replaceArrow = function (delta, dimension, isVertical) {
    this.arrow()
      .css(isVertical ? 'left' : 'top', 50 * (1 - delta / dimension) + '%')
      .css(isVertical ? 'top' : 'left', '')
  }

  Tooltip.prototype.setContent = function () {
    var $tip  = this.tip()
    var title = this.getTitle()

    $tip.find('.tooltip-inner')[this.options.html ? 'html' : 'text'](title)
    $tip.removeClass('fade in top bottom left right')
  }

  Tooltip.prototype.hide = function (callback) {
    var that = this
    var $tip = $(this.$tip)
    var e    = $.Event('hide.bs.' + this.type)

    function complete() {
      if (that.hoverState != 'in') $tip.detach()
      if (that.$element) { // TODO: Check whether guarding this code with this `if` is really necessary.
        that.$element
          .removeAttr('aria-describedby')
          .trigger('hidden.bs.' + that.type)
      }
      callback && callback()
    }

    this.$element.trigger(e)

    if (e.isDefaultPrevented()) return

    $tip.removeClass('in')

    $.support.transition && $tip.hasClass('fade') ?
      $tip
        .one('bsTransitionEnd', complete)
        .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
      complete()

    this.hoverState = null

    return this
  }

  Tooltip.prototype.fixTitle = function () {
    var $e = this.$element
    if ($e.attr('title') || typeof $e.attr('data-original-title') != 'string') {
      $e.attr('data-original-title', $e.attr('title') || '').attr('title', '')
    }
  }

  Tooltip.prototype.hasContent = function () {
    return this.getTitle()
  }

  Tooltip.prototype.getPosition = function ($element) {
    $element   = $element || this.$element

    var el     = $element[0]
    var isBody = el.tagName == 'BODY'

    var elRect    = el.getBoundingClientRect()
    if (elRect.width == null) {
      // width and height are missing in IE8, so compute them manually; see https://github.com/twbs/bootstrap/issues/14093
      elRect = $.extend({}, elRect, { width: elRect.right - elRect.left, height: elRect.bottom - elRect.top })
    }
    var isSvg = window.SVGElement && el instanceof window.SVGElement
    // Avoid using $.offset() on SVGs since it gives incorrect results in jQuery 3.
    // See https://github.com/twbs/bootstrap/issues/20280
    var elOffset  = isBody ? { top: 0, left: 0 } : (isSvg ? null : $element.offset())
    var scroll    = { scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
    var outerDims = isBody ? { width: $(window).width(), height: $(window).height() } : null

    return $.extend({}, elRect, scroll, outerDims, elOffset)
  }

  Tooltip.prototype.getCalculatedOffset = function (placement, pos, actualWidth, actualHeight) {
    return placement == 'bottom' ? { top: pos.top + pos.height,   left: pos.left + pos.width / 2 - actualWidth / 2 } :
           placement == 'top'    ? { top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2 } :
           placement == 'left'   ? { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth } :
        /* placement == 'right' */ { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width }

  }

  Tooltip.prototype.getViewportAdjustedDelta = function (placement, pos, actualWidth, actualHeight) {
    var delta = { top: 0, left: 0 }
    if (!this.$viewport) return delta

    var viewportPadding = this.options.viewport && this.options.viewport.padding || 0
    var viewportDimensions = this.getPosition(this.$viewport)

    if (/right|left/.test(placement)) {
      var topEdgeOffset    = pos.top - viewportPadding - viewportDimensions.scroll
      var bottomEdgeOffset = pos.top + viewportPadding - viewportDimensions.scroll + actualHeight
      if (topEdgeOffset < viewportDimensions.top) { // top overflow
        delta.top = viewportDimensions.top - topEdgeOffset
      } else if (bottomEdgeOffset > viewportDimensions.top + viewportDimensions.height) { // bottom overflow
        delta.top = viewportDimensions.top + viewportDimensions.height - bottomEdgeOffset
      }
    } else {
      var leftEdgeOffset  = pos.left - viewportPadding
      var rightEdgeOffset = pos.left + viewportPadding + actualWidth
      if (leftEdgeOffset < viewportDimensions.left) { // left overflow
        delta.left = viewportDimensions.left - leftEdgeOffset
      } else if (rightEdgeOffset > viewportDimensions.right) { // right overflow
        delta.left = viewportDimensions.left + viewportDimensions.width - rightEdgeOffset
      }
    }

    return delta
  }

  Tooltip.prototype.getTitle = function () {
    var title
    var $e = this.$element
    var o  = this.options

    title = $e.attr('data-original-title')
      || (typeof o.title == 'function' ? o.title.call($e[0]) :  o.title)

    return title
  }

  Tooltip.prototype.getUID = function (prefix) {
    do prefix += ~~(Math.random() * 1000000)
    while (document.getElementById(prefix))
    return prefix
  }

  Tooltip.prototype.tip = function () {
    if (!this.$tip) {
      this.$tip = $(this.options.template)
      if (this.$tip.length != 1) {
        throw new Error(this.type + ' `template` option must consist of exactly 1 top-level element!')
      }
    }
    return this.$tip
  }

  Tooltip.prototype.arrow = function () {
    return (this.$arrow = this.$arrow || this.tip().find('.tooltip-arrow'))
  }

  Tooltip.prototype.enable = function () {
    this.enabled = true
  }

  Tooltip.prototype.disable = function () {
    this.enabled = false
  }

  Tooltip.prototype.toggleEnabled = function () {
    this.enabled = !this.enabled
  }

  Tooltip.prototype.toggle = function (e) {
    var self = this
    if (e) {
      self = $(e.currentTarget).data('bs.' + this.type)
      if (!self) {
        self = new this.constructor(e.currentTarget, this.getDelegateOptions())
        $(e.currentTarget).data('bs.' + this.type, self)
      }
    }

    if (e) {
      self.inState.click = !self.inState.click
      if (self.isInStateTrue()) self.enter(self)
      else self.leave(self)
    } else {
      self.tip().hasClass('in') ? self.leave(self) : self.enter(self)
    }
  }

  Tooltip.prototype.destroy = function () {
    var that = this
    clearTimeout(this.timeout)
    this.hide(function () {
      that.$element.off('.' + that.type).removeData('bs.' + that.type)
      if (that.$tip) {
        that.$tip.detach()
      }
      that.$tip = null
      that.$arrow = null
      that.$viewport = null
      that.$element = null
    })
  }


  // TOOLTIP PLUGIN DEFINITION
  // =========================

  function Plugin(option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.tooltip')
      var options = typeof option == 'object' && option

      if (!data && /destroy|hide/.test(option)) return
      if (!data) $this.data('bs.tooltip', (data = new Tooltip(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  var old = $.fn.tooltip

  $.fn.tooltip             = Plugin
  $.fn.tooltip.Constructor = Tooltip


  // TOOLTIP NO CONFLICT
  // ===================

  $.fn.tooltip.noConflict = function () {
    $.fn.tooltip = old
    return this
  }

}(jQuery);
/* ========================================================================
 * Bootstrap: popover.js v3.3.7
 * http://getbootstrap.com/javascript/#popovers
 * ========================================================================
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */



+function ($) {
  'use strict';

  // POPOVER PUBLIC CLASS DEFINITION
  // ===============================

  var Popover = function (element, options) {
    this.init('popover', element, options)
  }

  if (!$.fn.tooltip) throw new Error('Popover requires tooltip.js')

  Popover.VERSION  = '3.3.7'

  Popover.DEFAULTS = $.extend({}, $.fn.tooltip.Constructor.DEFAULTS, {
    placement: 'right',
    trigger: 'click',
    content: '',
    template: '<div class="popover" role="tooltip"><div class="arrow"></div><h3 class="popover-title"></h3><div class="popover-content"></div></div>'
  })


  // NOTE: POPOVER EXTENDS tooltip.js
  // ================================

  Popover.prototype = $.extend({}, $.fn.tooltip.Constructor.prototype)

  Popover.prototype.constructor = Popover

  Popover.prototype.getDefaults = function () {
    return Popover.DEFAULTS
  }

  Popover.prototype.setContent = function () {
    var $tip    = this.tip()
    var title   = this.getTitle()
    var content = this.getContent()

    $tip.find('.popover-title')[this.options.html ? 'html' : 'text'](title)
    $tip.find('.popover-content').children().detach().end()[ // we use append for html objects to maintain js events
      this.options.html ? (typeof content == 'string' ? 'html' : 'append') : 'text'
    ](content)

    $tip.removeClass('fade top bottom left right in')

    // IE8 doesn't accept hiding via the `:empty` pseudo selector, we have to do
    // this manually by checking the contents.
    if (!$tip.find('.popover-title').html()) $tip.find('.popover-title').hide()
  }

  Popover.prototype.hasContent = function () {
    return this.getTitle() || this.getContent()
  }

  Popover.prototype.getContent = function () {
    var $e = this.$element
    var o  = this.options

    return $e.attr('data-content')
      || (typeof o.content == 'function' ?
            o.content.call($e[0]) :
            o.content)
  }

  Popover.prototype.arrow = function () {
    return (this.$arrow = this.$arrow || this.tip().find('.arrow'))
  }


  // POPOVER PLUGIN DEFINITION
  // =========================

  function Plugin(option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.popover')
      var options = typeof option == 'object' && option

      if (!data && /destroy|hide/.test(option)) return
      if (!data) $this.data('bs.popover', (data = new Popover(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  var old = $.fn.popover

  $.fn.popover             = Plugin
  $.fn.popover.Constructor = Popover


  // POPOVER NO CONFLICT
  // ===================

  $.fn.popover.noConflict = function () {
    $.fn.popover = old
    return this
  }

}(jQuery);












// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// compiled file. JavaScript code in this file should be added after the last require_* statement.
//
// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
// about supported directives.
//





;
