src/core.js

   1 var jQuery = (function() {
   2
   3 // Define a local copy of jQuery
   4 var jQuery = function( selector, context ) {
   5                 // The jQuery object is actually just the init constructor 'enhanced'
   6                 return new jQuery.fn.init( selector, context, rootjQuery );
   7         },
   8
   9         // Map over jQuery in case of overwrite
  10         _jQuery = window.jQuery,
  11
  12         // Map over the $ in case of overwrite
  13         _$ = window.$,
  14
  15         // A central reference to the root jQuery(document)
  16         rootjQuery,
  17
  18         // A simple way to check for HTML strings or ID strings
  19         // (both of which we optimize for)
  20         quickExpr = /^(?:[^<]*(<[\w\W]+>)[^>]*$|#([\w\-]+)$)/,
  21
  22         // Check if a string has a non-whitespace character in it
  23         rnotwhite = /\S/,
  24
  25         // Used for trimming whitespace
  26         trimLeft = /^\s+/,
  27         trimRight = /\s+$/,
  28
  29         // Check for non-word characters
  30         rnonword = /\W/,
  31
  32         // Check for digits
  33         rdigit = /\d/,
  34
  35         // Match a standalone tag
  36         rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/,
  37
  38         // JSON RegExp
  39         rvalidchars = /^[\],:{}\s]*$/,
  40         rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,
  41         rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,
  42         rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
  43
  44         // Useragent RegExp
  45         rwebkit = /(webkit)[ \/]([\w.]+)/,
  46         ropera = /(opera)(?:.*version)?[ \/]([\w.]+)/,
  47         rmsie = /(msie) ([\w.]+)/,
  48         rmozilla = /(mozilla)(?:.*? rv:([\w.]+))?/,
  49
  50         // Keep a UserAgent string for use with jQuery.browser
  51         userAgent = navigator.userAgent,
  52
  53         // For matching the engine and version of the browser
  54         browserMatch,
  55
  56         // Has the ready events already been bound?
  57         readyBound = false,
  58
  59         // The deferred used on DOM ready
  60         readyList,
  61
  62         // Promise methods
  63         promiseMethods = "then done fail isResolved isRejected promise".split( " " ),
  64
  65         // The ready event handler
  66         DOMContentLoaded,
  67
  68         // Save a reference to some core methods
  69         toString = Object.prototype.toString,
  70         hasOwn = Object.prototype.hasOwnProperty,
  71         push = Array.prototype.push,
  72         slice = Array.prototype.slice,
  73         trim = String.prototype.trim,
  74         indexOf = Array.prototype.indexOf,
  75
  76         // [[Class]] -> type pairs
  77         class2type = {};
  78
  79 jQuery.fn = jQuery.prototype = {
  80         constructor: jQuery,
  81         init: function( selector, context, rootjQuery ) {
  82                 var match, elem, ret, doc;
  83
  84                 // Handle $(""), $(null), or $(undefined)
  85                 if ( !selector ) {
  86                         return this;
  87                 }
  88
  89                 // Handle $(DOMElement)
  90                 if ( selector.nodeType ) {
  91                         this.context = this[0] = selector;
  92                         this.length = 1;
  93                         return this;
  94                 }
  95
  96                 // The body element only exists once, optimize finding it
  97                 if ( selector === "body" && !context && document.body ) {
  98                         this.context = document;
  99                         this[0] = document.body;
 100                         this.selector = "body";
 101                         this.length = 1;
 102                         return this;
 103                 }
 104
 105                 // Handle HTML strings
 106                 if ( typeof selector === "string" ) {
 107                         // Are we dealing with HTML string or an ID?
 108                         match = quickExpr.exec( selector );
 109
 110                         // Verify a match, and that no context was specified for #id
 111                         if ( match && (match[1] || !context) ) {
 112
 113                                 // HANDLE: $(html) -> $(array)
 114                                 if ( match[1] ) {
 115                                         context = context instanceof jQuery ? context[0] : context;
 116                                         doc = (context ? context.ownerDocument || context : document);
 117
 118                                         // If a single string is passed in and it's a single tag
 119                                         // just do a createElement and skip the rest
 120                                         ret = rsingleTag.exec( selector );
 121
 122                                         if ( ret ) {
 123                                                 if ( jQuery.isPlainObject( context ) ) {
 124                                                         selector = [ document.createElement( ret[1] ) ];
 125                                                         jQuery.fn.attr.call( selector, context, true );
 126
 127                                                 } else {
 128                                                         selector = [ doc.createElement( ret[1] ) ];
 129                                                 }
 130
 131                                         } else {
 132                                                 ret = jQuery.buildFragment( [ match[1] ], [ doc ] );
 133                                                 selector = (ret.cacheable ? jQuery.clone(ret.fragment) : ret.fragment).childNodes;
 134                                         }
 135
 136                                         return jQuery.merge( this, selector );
 137
 138                                 // HANDLE: $("#id")
 139                                 } else {
 140                                         elem = document.getElementById( match[2] );
 141
 142                                         // Check parentNode to catch when Blackberry 4.6 returns
 143                                         // nodes that are no longer in the document #6963
 144                                         if ( elem && elem.parentNode ) {
 145                                                 // Handle the case where IE and Opera return items
 146                                                 // by name instead of ID
 147                                                 if ( elem.id !== match[2] ) {
 148                                                         return rootjQuery.find( selector );
 149                                                 }
 150
 151                                                 // Otherwise, we inject the element directly into the jQuery object
 152                                                 this.length = 1;
 153                                                 this[0] = elem;
 154                                         }
 155
 156                                         this.context = document;
 157                                         this.selector = selector;
 158                                         return this;
 159                                 }
 160
 161                         // HANDLE: $(expr, $(...))
 162                         } else if ( !context || context.jquery ) {
 163                                 return (context || rootjQuery).find( selector );
 164
 165                         // HANDLE: $(expr, context)
 166                         // (which is just equivalent to: $(context).find(expr)
 167                         } else {
 168                                 return this.constructor( context ).find( selector );
 169                         }
 170
 171                 // HANDLE: $(function)
 172                 // Shortcut for document ready
 173                 } else if ( jQuery.isFunction( selector ) ) {
 174                         return rootjQuery.ready( selector );
 175                 }
 176
 177                 if (selector.selector !== undefined) {
 178                         this.selector = selector.selector;
 179                         this.context = selector.context;
 180                 }
 181
 182                 return jQuery.makeArray( selector, this );
 183         },
 184
 185         // Start with an empty selector
 186         selector: "",
 187
 188         // The current version of jQuery being used
 189         jquery: "@VERSION",
 190
 191         // The default length of a jQuery object is 0
 192         length: 0,
 193
 194         // The number of elements contained in the matched element set
 195         size: function() {
 196                 return this.length;
 197         },
 198
 199         toArray: function() {
 200                 return slice.call( this, 0 );
 201         },
 202
 203         // Get the Nth element in the matched element set OR
 204         // Get the whole matched element set as a clean array
 205         get: function( num ) {
 206                 return num == null ?
 207
 208                         // Return a 'clean' array
 209                         this.toArray() :
 210
 211                         // Return just the object
 212                         ( num < 0 ? this[ this.length + num ] : this[ num ] );
 213         },
 214
 215         // Take an array of elements and push it onto the stack
 216         // (returning the new matched element set)
 217         pushStack: function( elems, name, selector ) {
 218                 // Build a new jQuery matched element set
 219                 var ret = this.constructor();
 220
 221                 if ( jQuery.isArray( elems ) ) {
 222                         push.apply( ret, elems );
 223
 224                 } else {
 225                         jQuery.merge( ret, elems );
 226                 }
 227
 228                 // Add the old object onto the stack (as a reference)
 229                 ret.prevObject = this;
 230
 231                 ret.context = this.context;
 232
 233                 if ( name === "find" ) {
 234                         ret.selector = this.selector + (this.selector ? " " : "") + selector;
 235                 } else if ( name ) {
 236                         ret.selector = this.selector + "." + name + "(" + selector + ")";
 237                 }
 238
 239                 // Return the newly-formed element set
 240                 return ret;
 241         },
 242
 243         // Execute a callback for every element in the matched set.
 244         // (You can seed the arguments with an array of args, but this is
 245         // only used internally.)
 246         each: function( callback, args ) {
 247                 return jQuery.each( this, callback, args );
 248         },
 249
 250         ready: function( fn ) {
 251                 // Attach the listeners
 252                 jQuery.bindReady();
 253
 254                 // Add the callback
 255                 readyList.done( fn );
 256
 257                 return this;
 258         },
 259
 260         eq: function( i ) {
 261                 return i === -1 ?
 262                         this.slice( i ) :
 263                         this.slice( i, +i + 1 );
 264         },
 265
 266         first: function() {
 267                 return this.eq( 0 );
 268         },
 269
 270         last: function() {
 271                 return this.eq( -1 );
 272         },
 273
 274         slice: function() {
 275                 return this.pushStack( slice.apply( this, arguments ),
 276                         "slice", slice.call(arguments).join(",") );
 277         },
 278
 279         map: function( callback ) {
 280                 return this.pushStack( jQuery.map(this, function( elem, i ) {
 281                         return callback.call( elem, i, elem );
 282                 }));
 283         },
 284
 285         end: function() {
 286                 return this.prevObject || this.constructor(null);
 287         },
 288
 289         // For internal use only.
 290         // Behaves like an Array's method, not like a jQuery method.
 291         push: push,
 292         sort: [].sort,
 293         splice: [].splice
 294 };
 295
 296 // Give the init function the jQuery prototype for later instantiation
 297 jQuery.fn.init.prototype = jQuery.fn;
 298
 299 jQuery.extend = jQuery.fn.extend = function() {
 300          var options, name, src, copy, copyIsArray, clone,
 301                 target = arguments[0] || {},
 302                 i = 1,
 303                 length = arguments.length,
 304                 deep = false;
 305
 306         // Handle a deep copy situation
 307         if ( typeof target === "boolean" ) {
 308                 deep = target;
 309                 target = arguments[1] || {};
 310                 // skip the boolean and the target
 311                 i = 2;
 312         }
 313
 314         // Handle case when target is a string or something (possible in deep copy)
 315         if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
 316                 target = {};
 317         }
 318
 319         // extend jQuery itself if only one argument is passed
 320         if ( length === i ) {
 321                 target = this;
 322                 --i;
 323         }
 324
 325         for ( ; i < length; i++ ) {
 326                 // Only deal with non-null/undefined values
 327                 if ( (options = arguments[ i ]) != null ) {
 328                         // Extend the base object
 329                         for ( name in options ) {
 330                                 src = target[ name ];
 331                                 copy = options[ name ];
 332
 333                                 // Prevent never-ending loop
 334                                 if ( target === copy ) {
 335                                         continue;
 336                                 }
 337
 338                                 // Recurse if we're merging plain objects or arrays
 339                                 if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
 340                                         if ( copyIsArray ) {
 341                                                 copyIsArray = false;
 342                                                 clone = src && jQuery.isArray(src) ? src : [];
 343
 344                                         } else {
 345                                                 clone = src && jQuery.isPlainObject(src) ? src : {};
 346                                         }
 347
 348                                         // Never move original objects, clone them
 349                                         target[ name ] = jQuery.extend( deep, clone, copy );
 350
 351                                 // Don't bring in undefined values
 352                                 } else if ( copy !== undefined ) {
 353                                         target[ name ] = copy;
 354                                 }
 355                         }
 356                 }
 357         }
 358
 359         // Return the modified object
 360         return target;
 361 };
 362
 363 jQuery.extend({
 364         noConflict: function( deep ) {
 365                 window.$ = _$;
 366
 367                 if ( deep ) {
 368                         window.jQuery = _jQuery;
 369                 }
 370
 371                 return jQuery;
 372         },
 373
 374         // Is the DOM ready to be used? Set to true once it occurs.
 375         isReady: false,
 376
 377         // A counter to track how many items to wait for before
 378         // the ready event fires. See #6781
 379         readyWait: 1,
 380
 381         // Handle when the DOM is ready
 382         ready: function( wait ) {
 383                 // A third-party is pushing the ready event forwards
 384                 if ( wait === true ) {
 385                         jQuery.readyWait--;
 386                 }
 387
 388                 // Make sure that the DOM is not already loaded
 389                 if ( !jQuery.readyWait || (wait !== true && !jQuery.isReady) ) {
 390                         // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
 391                         if ( !document.body ) {
 392                                 return setTimeout( jQuery.ready, 1 );
 393                         }
 394
 395                         // Remember that the DOM is ready
 396                         jQuery.isReady = true;
 397
 398                         // If a normal DOM Ready event fired, decrement, and wait if need be
 399                         if ( wait !== true && --jQuery.readyWait > 0 ) {
 400                                 return;
 401                         }
 402
 403                         // If there are functions bound, to execute
 404                         readyList.resolveWith( document, [ jQuery ] );
 405
 406                         // Trigger any bound ready events
 407                         if ( jQuery.fn.trigger ) {
 408                                 jQuery( document ).trigger( "ready" ).unbind( "ready" );
 409                         }
 410                 }
 411         },
 412
 413         bindReady: function() {
 414                 if ( readyBound ) {
 415                         return;
 416                 }
 417
 418                 readyBound = true;
 419
 420                 // Catch cases where $(document).ready() is called after the
 421                 // browser event has already occurred.
 422                 if ( document.readyState === "complete" ) {
 423                         // Handle it asynchronously to allow scripts the opportunity to delay ready
 424                         return setTimeout( jQuery.ready, 1 );
 425                 }
 426
 427                 // Mozilla, Opera and webkit nightlies currently support this event
 428                 if ( document.addEventListener ) {
 429                         // Use the handy event callback
 430                         document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
 431
 432                         // A fallback to window.onload, that will always work
 433                         window.addEventListener( "load", jQuery.ready, false );
 434
 435                 // If IE event model is used
 436                 } else if ( document.attachEvent ) {
 437                         // ensure firing before onload,
 438                         // maybe late but safe also for iframes
 439                         document.attachEvent("onreadystatechange", DOMContentLoaded);
 440
 441                         // A fallback to window.onload, that will always work
 442                         window.attachEvent( "onload", jQuery.ready );
 443
 444                         // If IE and not a frame
 445                         // continually check to see if the document is ready
 446                         var toplevel = false;
 447
 448                         try {
 449                                 toplevel = window.frameElement == null;
 450                         } catch(e) {}
 451
 452                         if ( document.documentElement.doScroll && toplevel ) {
 453                                 doScrollCheck();
 454                         }
 455                 }
 456         },
 457
 458         // See test/unit/core.js for details concerning isFunction.
 459         // Since version 1.3, DOM methods and functions like alert
 460         // aren't supported. They return false on IE (#2968).
 461         isFunction: function( obj ) {
 462                 return jQuery.type(obj) === "function";
 463         },
 464
 465         isArray: Array.isArray || function( obj ) {
 466                 return jQuery.type(obj) === "array";
 467         },
 468
 469         // A crude way of determining if an object is a window
 470         isWindow: function( obj ) {
 471                 return obj && typeof obj === "object" && "setInterval" in obj;
 472         },
 473
 474         isNaN: function( obj ) {
 475                 return obj == null || !rdigit.test( obj ) || isNaN( obj );
 476         },
 477
 478         type: function( obj ) {
 479                 return obj == null ?
 480                         String( obj ) :
 481                         class2type[ toString.call(obj) ] || "object";
 482         },
 483
 484         isPlainObject: function( obj ) {
 485                 // Must be an Object.
 486                 // Because of IE, we also have to check the presence of the constructor property.
 487                 // Make sure that DOM nodes and window objects don't pass through, as well
 488                 if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
 489                         return false;
 490                 }
 491
 492                 // Not own constructor property must be Object
 493                 if ( obj.constructor &&
 494                         !hasOwn.call(obj, "constructor") &&
 495                         !hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
 496                         return false;
 497                 }
 498
 499                 // Own properties are enumerated firstly, so to speed up,
 500                 // if last one is own, then all properties are own.
 501
 502                 var key;
 503                 for ( key in obj ) {}
 504
 505                 return key === undefined || hasOwn.call( obj, key );
 506         },
 507
 508         isEmptyObject: function( obj ) {
 509                 for ( var name in obj ) {
 510                         return false;
 511                 }
 512                 return true;
 513         },
 514
 515         error: function( msg ) {
 516                 throw msg;
 517         },
 518
 519         parseJSON: function( data ) {
 520                 if ( typeof data !== "string" || !data ) {
 521                         return null;
 522                 }
 523
 524                 // Make sure leading/trailing whitespace is removed (IE can't handle it)
 525                 data = jQuery.trim( data );
 526
 527                 // Make sure the incoming data is actual JSON
 528                 // Logic borrowed from http://json.org/json2.js
 529                 if ( rvalidchars.test(data.replace(rvalidescape, "@")
 530                         .replace(rvalidtokens, "]")
 531                         .replace(rvalidbraces, "")) ) {
 532
 533                         // Try to use the native JSON parser first
 534                         return window.JSON && window.JSON.parse ?
 535                                 window.JSON.parse( data ) :
 536                                 (new Function("return " + data))();
 537
 538                 } else {
 539                         jQuery.error( "Invalid JSON: " + data );
 540                 }
 541         },
 542
 543         // Cross-browser xml parsing
 544         // (xml & tmp used internally)
 545         parseXML: function( data , xml , tmp ) {
 546
 547                 if ( window.DOMParser ) { // Standard
 548                         tmp = new DOMParser();
 549                         xml = tmp.parseFromString( data , "text/xml" );
 550                 } else { // IE
 551                         xml = new ActiveXObject( "Microsoft.XMLDOM" );
 552                         xml.async = "false";
 553                         xml.loadXML( data );
 554                 }
 555
 556                 tmp = xml.documentElement;
 557
 558                 if ( ! tmp || ! tmp.nodeName || tmp.nodeName === "parsererror" ) {
 559                         jQuery.error( "Invalid XML: " + data );
 560                 }
 561
 562                 return xml;
 563         },
 564
 565         noop: function() {},
 566
 567         // Evalulates a script in a global context
 568         globalEval: function( data ) {
 569                 if ( data && rnotwhite.test(data) ) {
 570                         // Inspired by code by Andrea Giammarchi
 571                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 572                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 573                                 script = document.createElement("script");
 574
 575                         script.type = "text/javascript";
 576
 577                         if ( jQuery.support.scriptEval() ) {
 578                                 script.appendChild( document.createTextNode( data ) );
 579                         } else {
 580                                 script.text = data;
 581                         }
 582
 583                         // Use insertBefore instead of appendChild to circumvent an IE6 bug.
 584                         // This arises when a base node is used (#2709).
 585                         head.insertBefore( script, head.firstChild );
 586                         head.removeChild( script );
 587                 }
 588         },
 589
 590         nodeName: function( elem, name ) {
 591                 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
 592         },
 593
 594         // args is for internal usage only
 595         each: function( object, callback, args ) {
 596                 var name, i = 0,
 597                         length = object.length,
 598                         isObj = length === undefined || jQuery.isFunction(object);
 599
 600                 if ( args ) {
 601                         if ( isObj ) {
 602                                 for ( name in object ) {
 603                                         if ( callback.apply( object[ name ], args ) === false ) {
 604                                                 break;
 605                                         }
 606                                 }
 607                         } else {
 608                                 for ( ; i < length; ) {
 609                                         if ( callback.apply( object[ i++ ], args ) === false ) {
 610                                                 break;
 611                                         }
 612                                 }
 613                         }
 614
 615                 // A special, fast, case for the most common use of each
 616                 } else {
 617                         if ( isObj ) {
 618                                 for ( name in object ) {
 619                                         if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
 620                                                 break;
 621                                         }
 622                                 }
 623                         } else {
 624                                 for ( var value = object[0];
 625                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
 626                         }
 627                 }
 628
 629                 return object;
 630         },
 631
 632         // Use native String.trim function wherever possible
 633         trim: trim ?
 634                 function( text ) {
 635                         return text == null ?
 636                                 "" :
 637                                 trim.call( text );
 638                 } :
 639
 640                 // Otherwise use our own trimming functionality
 641                 function( text ) {
 642                         return text == null ?
 643                                 "" :
 644                                 text.toString().replace( trimLeft, "" ).replace( trimRight, "" );
 645                 },
 646
 647         // results is for internal usage only
 648         makeArray: function( array, results ) {
 649                 var ret = results || [];
 650
 651                 if ( array != null ) {
 652                         // The window, strings (and functions) also have 'length'
 653                         // The extra typeof function check is to prevent crashes
 654                         // in Safari 2 (See: #3039)
 655                         // Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930
 656                         var type = jQuery.type(array);
 657
 658                         if ( array.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( array ) ) {
 659                                 push.call( ret, array );
 660                         } else {
 661                                 jQuery.merge( ret, array );
 662                         }
 663                 }
 664
 665                 return ret;
 666         },
 667
 668         inArray: function( elem, array ) {
 669                 if ( array.indexOf ) {
 670                         return array.indexOf( elem );
 671                 }
 672
 673                 for ( var i = 0, length = array.length; i < length; i++ ) {
 674                         if ( array[ i ] === elem ) {
 675                                 return i;
 676                         }
 677                 }
 678
 679                 return -1;
 680         },
 681
 682         merge: function( first, second ) {
 683                 var i = first.length,
 684                         j = 0;
 685
 686                 if ( typeof second.length === "number" ) {
 687                         for ( var l = second.length; j < l; j++ ) {
 688                                 first[ i++ ] = second[ j ];
 689                         }
 690
 691                 } else {
 692                         while ( second[j] !== undefined ) {
 693                                 first[ i++ ] = second[ j++ ];
 694                         }
 695                 }
 696
 697                 first.length = i;
 698
 699                 return first;
 700         },
 701
 702         grep: function( elems, callback, inv ) {
 703                 var ret = [], retVal;
 704                 inv = !!inv;
 705
 706                 // Go through the array, only saving the items
 707                 // that pass the validator function
 708                 for ( var i = 0, length = elems.length; i < length; i++ ) {
 709                         retVal = !!callback( elems[ i ], i );
 710                         if ( inv !== retVal ) {
 711                                 ret.push( elems[ i ] );
 712                         }
 713                 }
 714
 715                 return ret;
 716         },
 717
 718         // arg is for internal usage only
 719         map: function( elems, callback, arg ) {
 720                 var ret = [], value;
 721
 722                 // Go through the array, translating each of the items to their
 723                 // new value (or values).
 724                 for ( var i = 0, length = elems.length; i < length; i++ ) {
 725                         value = callback( elems[ i ], i, arg );
 726
 727                         if ( value != null ) {
 728                                 ret[ ret.length ] = value;
 729                         }
 730                 }
 731
 732                 // Flatten any nested arrays
 733                 return ret.concat.apply( [], ret );
 734         },
 735
 736         // A global GUID counter for objects
 737         guid: 1,
 738
 739         proxy: function( fn, proxy, thisObject ) {
 740                 if ( arguments.length === 2 ) {
 741                         if ( typeof proxy === "string" ) {
 742                                 thisObject = fn;
 743                                 fn = thisObject[ proxy ];
 744                                 proxy = undefined;
 745
 746                         } else if ( proxy && !jQuery.isFunction( proxy ) ) {
 747                                 thisObject = proxy;
 748                                 proxy = undefined;
 749                         }
 750                 }
 751
 752                 if ( !proxy && fn ) {
 753                         proxy = function() {
 754                                 return fn.apply( thisObject || this, arguments );
 755                         };
 756                 }
 757
 758                 // Set the guid of unique handler to the same of original handler, so it can be removed
 759                 if ( fn ) {
 760                         proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++;
 761                 }
 762
 763                 // So proxy can be declared as an argument
 764                 return proxy;
 765         },
 766
 767         // Mutifunctional method to get and set values to a collection
 768         // The value/s can be optionally by executed if its a function
 769         access: function( elems, key, value, exec, fn, pass ) {
 770                 var length = elems.length;
 771
 772                 // Setting many attributes
 773                 if ( typeof key === "object" ) {
 774                         for ( var k in key ) {
 775                                 jQuery.access( elems, k, key[k], exec, fn, value );
 776                         }
 777                         return elems;
 778                 }
 779
 780                 // Setting one attribute
 781                 if ( value !== undefined ) {
 782                         // Optionally, function values get executed if exec is true
 783                         exec = !pass && exec && jQuery.isFunction(value);
 784
 785                         for ( var i = 0; i < length; i++ ) {
 786                                 fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
 787                         }
 788
 789                         return elems;
 790                 }
 791
 792                 // Getting an attribute
 793                 return length ? fn( elems[0], key ) : undefined;
 794         },
 795
 796         now: function() {
 797                 return (new Date()).getTime();
 798         },
 799
 800         // Create a simple deferred (one callbacks list)
 801         _Deferred: function() {
 802                 var // callbacks list
 803                         callbacks = [],
 804                         // stored [ context , args ]
 805                         fired,
 806                         // to avoid firing when already doing so
 807                         firing,
 808                         // flag to know if the deferred has been cancelled
 809                         cancelled,
 810                         // the deferred itself
 811                         deferred  = {
 812
 813                                 // done( f1, f2, ...)
 814                                 done: function() {
 815                                         if ( !cancelled ) {
 816                                                 var args = arguments,
 817                                                         i,
 818                                                         length,
 819                                                         elem,
 820                                                         type,
 821                                                         _fired;
 822                                                 if ( fired ) {
 823                                                         _fired = fired;
 824                                                         fired = 0;
 825                                                 }
 826                                                 for ( i = 0, length = args.length; i < length; i++ ) {
 827                                                         elem = args[ i ];
 828                                                         type = jQuery.type( elem );
 829                                                         if ( type === "array" ) {
 830                                                                 deferred.done.apply( deferred, elem );
 831                                                         } else if ( type === "function" ) {
 832                                                                 callbacks.push( elem );
 833                                                         }
 834                                                 }
 835                                                 if ( _fired ) {
 836                                                         deferred.resolveWith( _fired[ 0 ], _fired[ 1 ] );
 837                                                 }
 838                                         }
 839                                         return this;
 840                                 },
 841
 842                                 // resolve with given context and args
 843                                 resolveWith: function( context, args ) {
 844                                         if ( !cancelled && !fired && !firing ) {
 845                                                 firing = 1;
 846                                                 try {
 847                                                         while( callbacks[ 0 ] ) {
 848                                                                 callbacks.shift().apply( context, args );
 849                                                         }
 850                                                 }
 851                                                 finally {
 852                                                         fired = [ context, args ];
 853                                                         firing = 0;
 854                                                 }
 855                                         }
 856                                         return this;
 857                                 },
 858
 859                                 // resolve with this as context and given arguments
 860                                 resolve: function() {
 861                                         deferred.resolveWith( jQuery.isFunction( this.promise ) ? this.promise() : this, arguments );
 862                                         return this;
 863                                 },
 864
 865                                 // Has this deferred been resolved?
 866                                 isResolved: function() {
 867                                         return !!( firing || fired );
 868                                 },
 869
 870                                 // Cancel
 871                                 cancel: function() {
 872                                         cancelled = 1;
 873                                         callbacks = [];
 874                                         return this;
 875                                 }
 876                         };
 877
 878                 return deferred;
 879         },
 880
 881         // Full fledged deferred (two callbacks list)
 882         Deferred: function( func ) {
 883                 var deferred = jQuery._Deferred(),
 884                         failDeferred = jQuery._Deferred(),
 885                         promise;
 886                 // Add errorDeferred methods, then and promise
 887                 jQuery.extend( deferred, {
 888                         then: function( doneCallbacks, failCallbacks ) {
 889                                 deferred.done( doneCallbacks ).fail( failCallbacks );
 890                                 return this;
 891                         },
 892                         fail: failDeferred.done,
 893                         rejectWith: failDeferred.resolveWith,
 894                         reject: failDeferred.resolve,
 895                         isRejected: failDeferred.isResolved,
 896                         // Get a promise for this deferred
 897                         // If obj is provided, the promise aspect is added to the object
 898                         promise: function( obj , i /* internal */ ) {
 899                                 if ( obj == null ) {
 900                                         if ( promise ) {
 901                                                 return promise;
 902                                         }
 903                                         promise = obj = {};
 904                                 }
 905                                 i = promiseMethods.length;
 906                                 while( i-- ) {
 907                                         obj[ promiseMethods[ i ] ] = deferred[ promiseMethods[ i ] ];
 908                                 }
 909                                 return obj;
 910                         }
 911                 } );
 912                 // Make sure only one callback list will be used
 913                 deferred.then( failDeferred.cancel, deferred.cancel );
 914                 // Unexpose cancel
 915                 delete deferred.cancel;
 916                 // Call given func if any
 917                 if ( func ) {
 918                         func.call( deferred, deferred );
 919                 }
 920                 return deferred;
 921         },
 922
 923         // Deferred helper
 924         when: function( object ) {
 925                 var args = arguments,
 926                         length = args.length,
 927                         deferred = length <= 1 && object && jQuery.isFunction( object.promise ) ?
 928                                 object :
 929                                 jQuery.Deferred(),
 930                         promise = deferred.promise(),
 931                         resolveArray;
 932
 933                 if ( length > 1 ) {
 934                         resolveArray = new Array( length );
 935                         jQuery.each( args, function( index, element, args ) {
 936                                 jQuery.when( element ).then( function( value ) {
 937                                         args = arguments;
 938                                         resolveArray[ index ] = args.length > 1 ? slice.call( args, 0 ) : value;
 939                                         if( ! --length ) {
 940                                                 deferred.resolveWith( promise, resolveArray );
 941                                         }
 942                                 }, deferred.reject );
 943                         } );
 944                 } else if ( deferred !== object ) {
 945                         deferred.resolve( object );
 946                 }
 947                 return promise;
 948         },
 949
 950         // Use of jQuery.browser is frowned upon.
 951         // More details: http://docs.jquery.com/Utilities/jQuery.browser
 952         uaMatch: function( ua ) {
 953                 ua = ua.toLowerCase();
 954
 955                 var match = rwebkit.exec( ua ) ||
 956                         ropera.exec( ua ) ||
 957                         rmsie.exec( ua ) ||
 958                         ua.indexOf("compatible") < 0 && rmozilla.exec( ua ) ||
 959                         [];
 960
 961                 return { browser: match[1] || "", version: match[2] || "0" };
 962         },
 963
 964         subclass: function(){
 965                 function jQuerySubclass( selector, context ) {
 966                         return new jQuerySubclass.fn.init( selector, context );
 967                 }
 968                 jQuerySubclass.superclass = this;
 969                 jQuerySubclass.fn = jQuerySubclass.prototype = this();
 970                 jQuerySubclass.fn.constructor = jQuerySubclass;
 971                 jQuerySubclass.subclass = this.subclass;
 972                 jQuerySubclass.fn.init = function init( selector, context ) {
 973                         if (context && context instanceof jQuery && !(context instanceof jQuerySubclass)){
 974                                 context = jQuerySubclass(context);
 975                         }
 976                         return jQuery.fn.init.call( this, selector, context, rootjQuerySubclass );
 977                 };
 978                 jQuerySubclass.fn.init.prototype = jQuerySubclass.fn;
 979                 var rootjQuerySubclass = jQuerySubclass(document);
 980                 return jQuerySubclass;
 981         },
 982
 983         browser: {}
 984 });
 985
 986 // Create readyList deferred
 987 readyList = jQuery._Deferred();
 988
 989 // Populate the class2type map
 990 jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
 991         class2type[ "[object " + name + "]" ] = name.toLowerCase();
 992 });
 993
 994 browserMatch = jQuery.uaMatch( userAgent );
 995 if ( browserMatch.browser ) {
 996         jQuery.browser[ browserMatch.browser ] = true;
 997         jQuery.browser.version = browserMatch.version;
 998 }
 999
1000 // Deprecated, use jQuery.browser.webkit instead
1001 if ( jQuery.browser.webkit ) {
1002         jQuery.browser.safari = true;
1003 }
1004
1005 if ( indexOf ) {
1006         jQuery.inArray = function( elem, array ) {
1007                 return indexOf.call( array, elem );
1008         };
1009 }
1010
1011 // IE doesn't match non-breaking spaces with \s
1012 if ( rnotwhite.test( "\xA0" ) ) {
1013         trimLeft = /^[\s\xA0]+/;
1014         trimRight = /[\s\xA0]+$/;
1015 }
1016
1017 // All jQuery objects should point back to these
1018 rootjQuery = jQuery(document);
1019
1020 // Cleanup functions for the document ready method
1021 if ( document.addEventListener ) {
1022         DOMContentLoaded = function() {
1023                 document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
1024                 jQuery.ready();
1025         };
1026
1027 } else if ( document.attachEvent ) {
1028         DOMContentLoaded = function() {
1029                 // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
1030                 if ( document.readyState === "complete" ) {
1031                         document.detachEvent( "onreadystatechange", DOMContentLoaded );
1032                         jQuery.ready();
1033                 }
1034         };
1035 }
1036
1037 // The DOM ready check for Internet Explorer
1038 function doScrollCheck() {
1039         if ( jQuery.isReady ) {
1040                 return;
1041         }
1042
1043         try {
1044                 // If IE is used, use the trick by Diego Perini
1045                 // http://javascript.nwbox.com/IEContentLoaded/
1046                 document.documentElement.doScroll("left");
1047         } catch(e) {
1048                 setTimeout( doScrollCheck, 1 );
1049                 return;
1050         }
1051
1052         // and execute any waiting functions
1053         jQuery.ready();
1054 }
1055
1056 // Expose jQuery to the global object
1057 return (window.jQuery = window.$ = jQuery);
1058
1059 })();