src/core.js

   1 var
   2         // Will speed up references to window, and allows munging its name.
   3         window = this,
   4         // Will speed up references to undefined, and allows munging its name.
   5         undefined,
   6         // Map over jQuery in case of overwrite
   7         _jQuery = window.jQuery,
   8         // Map over the $ in case of overwrite
   9         _$ = window.$,
  10
  11         jQuery = window.jQuery = window.$ = function( selector, context ) {
  12                 // The jQuery object is actually just the init constructor 'enhanced'
  13                 return new jQuery.fn.init( selector, context );
  14         },
  15
  16         // A simple way to check for HTML strings or ID strings
  17         // (both of which we optimize for)
  18         quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
  19         // Is it a simple selector
  20         isSimple = /^.[^:#\[\.,]*$/;
  21
  22 jQuery.fn = jQuery.prototype = {
  23         init: function( selector, context ) {
  24                 // Make sure that a selection was provided
  25                 selector = selector || document;
  26
  27                 // Handle $(DOMElement)
  28                 if ( selector.nodeType ) {
  29                         this[0] = selector;
  30                         this.length = 1;
  31                         this.context = selector;
  32                         return this;
  33                 }
  34                 // Handle HTML strings
  35                 if ( typeof selector === "string" ) {
  36                         // Are we dealing with HTML string or an ID?
  37                         var match = quickExpr.exec( selector );
  38
  39                         // Verify a match, and that no context was specified for #id
  40                         if ( match && (match[1] || !context) ) {
  41
  42                                 // HANDLE: $(html) -> $(array)
  43                                 if ( match[1] )
  44                                         selector = jQuery.clean( [ match[1] ], context );
  45
  46                                 // HANDLE: $("#id")
  47                                 else {
  48                                         var elem = document.getElementById( match[3] );
  49
  50                                         // Handle the case where IE and Opera return items
  51                                         // by name instead of ID
  52                                         if ( elem && elem.id != match[3] )
  53                                                 return jQuery().find( selector );
  54
  55                                         // Otherwise, we inject the element directly into the jQuery object
  56                                         var ret = jQuery( elem || [] );
  57                                         ret.context = document;
  58                                         ret.selector = selector;
  59                                         return ret;
  60                                 }
  61
  62                         // HANDLE: $(expr, [context])
  63                         // (which is just equivalent to: $(content).find(expr)
  64                         } else
  65                                 return jQuery( context ).find( selector );
  66
  67                 // HANDLE: $(function)
  68                 // Shortcut for document ready
  69                 } else if ( jQuery.isFunction( selector ) )
  70                         return jQuery( document ).ready( selector );
  71
  72                 // Make sure that old selector state is passed along
  73                 if ( selector.selector && selector.context ) {
  74                         this.selector = selector.selector;
  75                         this.context = selector.context;
  76                 }
  77
  78                 return this.setArray(jQuery.makeArray(selector));
  79         },
  80
  81         // Start with an empty selector
  82         selector: "",
  83
  84         // The current version of jQuery being used
  85         jquery: "@VERSION",
  86
  87         // The number of elements contained in the matched element set
  88         size: function() {
  89                 return this.length;
  90         },
  91
  92         // Get the Nth element in the matched element set OR
  93         // Get the whole matched element set as a clean array
  94         get: function( num ) {
  95                 return num === undefined ?
  96
  97                         // Return a 'clean' array
  98                         jQuery.makeArray( this ) :
  99
 100                         // Return just the object
 101                         this[ num ];
 102         },
 103
 104         // Take an array of elements and push it onto the stack
 105         // (returning the new matched element set)
 106         pushStack: function( elems, name, selector ) {
 107                 // Build a new jQuery matched element set
 108                 var ret = jQuery( elems );
 109
 110                 // Add the old object onto the stack (as a reference)
 111                 ret.prevObject = this;
 112
 113                 ret.context = this.context;
 114
 115                 if ( name === "find" )
 116                         ret.selector = this.selector + (this.selector ? " " : "") + selector;
 117                 else if ( name )
 118                         ret.selector = this.selector + "." + name + "(" + selector + ")";
 119
 120                 // Return the newly-formed element set
 121                 return ret;
 122         },
 123
 124         // Force the current matched set of elements to become
 125         // the specified array of elements (destroying the stack in the process)
 126         // You should use pushStack() in order to do this, but maintain the stack
 127         setArray: function( elems ) {
 128                 // Resetting the length to 0, then using the native Array push
 129                 // is a super-fast way to populate an object with array-like properties
 130                 this.length = 0;
 131                 Array.prototype.push.apply( this, elems );
 132
 133                 return this;
 134         },
 135
 136         // Execute a callback for every element in the matched set.
 137         // (You can seed the arguments with an array of args, but this is
 138         // only used internally.)
 139         each: function( callback, args ) {
 140                 return jQuery.each( this, callback, args );
 141         },
 142
 143         // Determine the position of an element within
 144         // the matched set of elements
 145         index: function( elem ) {
 146                 // Locate the position of the desired element
 147                 return jQuery.inArray(
 148                         // If it receives a jQuery object, the first element is used
 149                         elem && elem.jquery ? elem[0] : elem
 150                 , this );
 151         },
 152
 153         attr: function( name, value, type ) {
 154                 var options = name;
 155
 156                 // Look for the case where we're accessing a style value
 157                 if ( typeof name === "string" )
 158                         if ( value === undefined )
 159                                 return this[0] && jQuery[ type || "attr" ]( this[0], name );
 160
 161                         else {
 162                                 options = {};
 163                                 options[ name ] = value;
 164                         }
 165
 166                 // Check to see if we're setting style values
 167                 return this.each(function(i){
 168                         // Set all the styles
 169                         for ( name in options )
 170                                 jQuery.attr(
 171                                         type ?
 172                                                 this.style :
 173                                                 this,
 174                                         name, jQuery.prop( this, options[ name ], type, i, name )
 175                                 );
 176                 });
 177         },
 178
 179         css: function( key, value ) {
 180                 // ignore negative width and height values
 181                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 182                         value = undefined;
 183                 return this.attr( key, value, "curCSS" );
 184         },
 185
 186         text: function( text ) {
 187                 if ( typeof text !== "object" && text != null )
 188                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 189
 190                 var ret = "";
 191
 192                 jQuery.each( text || this, function(){
 193                         jQuery.each( this.childNodes, function(){
 194                                 if ( this.nodeType != 8 )
 195                                         ret += this.nodeType != 1 ?
 196                                                 this.nodeValue :
 197                                                 jQuery.fn.text( [ this ] );
 198                         });
 199                 });
 200
 201                 return ret;
 202         },
 203
 204         wrapAll: function( html ) {
 205                 if ( this[0] ) {
 206                         // The elements to wrap the target around
 207                         var wrap = jQuery( html, this[0].ownerDocument ).clone();
 208
 209                         if ( this[0].parentNode )
 210                                 wrap.insertBefore( this[0] );
 211
 212                         wrap.map(function(){
 213                                 var elem = this;
 214
 215                                 while ( elem.firstChild )
 216                                         elem = elem.firstChild;
 217
 218                                 return elem;
 219                         }).append(this);
 220                 }
 221
 222                 return this;
 223         },
 224
 225         wrapInner: function( html ) {
 226                 return this.each(function(){
 227                         jQuery( this ).contents().wrapAll( html );
 228                 });
 229         },
 230
 231         wrap: function( html ) {
 232                 return this.each(function(){
 233                         jQuery( this ).wrapAll( html );
 234                 });
 235         },
 236
 237         append: function() {
 238                 return this.domManip(arguments, true, function(elem){
 239                         if (this.nodeType == 1)
 240                                 this.appendChild( elem );
 241                 });
 242         },
 243
 244         prepend: function() {
 245                 return this.domManip(arguments, true, function(elem){
 246                         if (this.nodeType == 1)
 247                                 this.insertBefore( elem, this.firstChild );
 248                 });
 249         },
 250
 251         before: function() {
 252                 return this.domManip(arguments, false, function(elem){
 253                         this.parentNode.insertBefore( elem, this );
 254                 });
 255         },
 256
 257         after: function() {
 258                 return this.domManip(arguments, false, function(elem){
 259                         this.parentNode.insertBefore( elem, this.nextSibling );
 260                 });
 261         },
 262
 263         end: function() {
 264                 return this.prevObject || jQuery( [] );
 265         },
 266
 267         // For internal use only.
 268         // Behaves like an Array's .push method, not like a jQuery method.
 269         push: [].push,
 270
 271         find: function( selector ) {
 272                 if ( this.length === 1 && !/,/.test(selector) ) {
 273                         var ret = this.pushStack( [], "find", selector );
 274                         ret.length = 0;
 275                         jQuery.find( selector, this[0], ret );
 276                         return ret;
 277                 } else {
 278                         var elems = jQuery.map(this, function(elem){
 279                                 return jQuery.find( selector, elem );
 280                         });
 281
 282                         return this.pushStack( /[^+>] [^+>]/.test( selector ) ?
 283                                 jQuery.unique( elems ) :
 284                                 elems, "find", selector );
 285                 }
 286         },
 287
 288         clone: function( events ) {
 289                 // Do the clone
 290                 var ret = this.map(function(){
 291                         if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) {
 292                                 // IE copies events bound via attachEvent when
 293                                 // using cloneNode. Calling detachEvent on the
 294                                 // clone will also remove the events from the orignal
 295                                 // In order to get around this, we use innerHTML.
 296                                 // Unfortunately, this means some modifications to
 297                                 // attributes in IE that are actually only stored
 298                                 // as properties will not be copied (such as the
 299                                 // the name attribute on an input).
 300                                 var html = this.outerHTML;
 301                                 if ( !html ) {
 302                                         var div = this.ownerDocument.createElement("div");
 303                                         div.appendChild( this.cloneNode(true) );
 304                                         html = div.innerHTML;
 305                                 }
 306
 307                                 return jQuery.clean([html.replace(/ jQuery\d+="(?:\d+|null)"/g, "").replace(/^\s*/, "")])[0];
 308                         } else
 309                                 return this.cloneNode(true);
 310                 });
 311
 312                 // Copy the events from the original to the clone
 313                 if ( events === true ) {
 314                         var orig = this.find("*").andSelf(), i = 0;
 315
 316                         ret.find("*").andSelf().each(function(){
 317                                 if ( this.nodeName !== orig[i].nodeName )
 318                                         return;
 319
 320                                 var events = jQuery.data( orig[i], "events" );
 321
 322                                 for ( var type in events ) {
 323                                         for ( var handler in events[ type ] ) {
 324                                                 jQuery.event.add( this, type, events[ type ][ handler ], events[ type ][ handler ].data );
 325                                         }
 326                                 }
 327
 328                                 i++;
 329                         });
 330                 }
 331
 332                 // Return the cloned set
 333                 return ret;
 334         },
 335
 336         filter: function( selector ) {
 337                 return this.pushStack(
 338                         jQuery.isFunction( selector ) &&
 339                         jQuery.grep(this, function(elem, i){
 340                                 return selector.call( elem, i );
 341                         }) ||
 342
 343                         jQuery.multiFilter( selector, jQuery.grep(this, function(elem){
 344                                 return elem.nodeType === 1;
 345                         }) ), "filter", selector );
 346         },
 347
 348         closest: function( selector ) {
 349                 var pos = jQuery.expr.match.POS.test( selector ) ? jQuery(selector) : null,
 350                         closer = 0;
 351
 352                 return this.map(function(){
 353                         var cur = this;
 354                         while ( cur && cur.ownerDocument ) {
 355                                 if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) ) {
 356                                         jQuery.data(cur, "closest", closer);
 357                                         return cur;
 358                                 }
 359                                 cur = cur.parentNode;
 360                                 closer++;
 361                         }
 362                 });
 363         },
 364
 365         not: function( selector ) {
 366                 if ( typeof selector === "string" )
 367                         // test special case where just one selector is passed in
 368                         if ( isSimple.test( selector ) )
 369                                 return this.pushStack( jQuery.multiFilter( selector, this, true ), "not", selector );
 370                         else
 371                                 selector = jQuery.multiFilter( selector, this );
 372
 373                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 374                 return this.filter(function() {
 375                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 376                 });
 377         },
 378
 379         add: function( selector ) {
 380                 return this.pushStack( jQuery.unique( jQuery.merge(
 381                         this.get(),
 382                         typeof selector === "string" ?
 383                                 jQuery( selector ) :
 384                                 jQuery.makeArray( selector )
 385                 )));
 386         },
 387
 388         is: function( selector ) {
 389                 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
 390         },
 391
 392         hasClass: function( selector ) {
 393                 return !!selector && this.is( "." + selector );
 394         },
 395
 396         val: function( value ) {
 397                 if ( value === undefined ) {
 398                         var elem = this[0];
 399
 400                         if ( elem ) {
 401                                 if( jQuery.nodeName( elem, 'option' ) )
 402                                         return (elem.attributes.value || {}).specified ? elem.value : elem.text;
 403
 404                                 // We need to handle select boxes special
 405                                 if ( jQuery.nodeName( elem, "select" ) ) {
 406                                         var index = elem.selectedIndex,
 407                                                 values = [],
 408                                                 options = elem.options,
 409                                                 one = elem.type == "select-one";
 410
 411                                         // Nothing was selected
 412                                         if ( index < 0 )
 413                                                 return null;
 414
 415                                         // Loop through all the selected options
 416                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 417                                                 var option = options[ i ];
 418
 419                                                 if ( option.selected ) {
 420                                                         // Get the specifc value for the option
 421                                                         value = jQuery(option).val();
 422
 423                                                         // We don't need an array for one selects
 424                                                         if ( one )
 425                                                                 return value;
 426
 427                                                         // Multi-Selects return an array
 428                                                         values.push( value );
 429                                                 }
 430                                         }
 431
 432                                         return values;
 433                                 }
 434
 435                                 // Everything else, we just grab the value
 436                                 return (elem.value || "").replace(/\r/g, "");
 437
 438                         }
 439
 440                         return undefined;
 441                 }
 442
 443                 if ( typeof value === "number" )
 444                         value += '';
 445
 446                 return this.each(function(){
 447                         if ( this.nodeType != 1 )
 448                                 return;
 449
 450                         if ( jQuery.isArray(value) && /radio|checkbox/.test( this.type ) )
 451                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 452                                         jQuery.inArray(this.name, value) >= 0);
 453
 454                         else if ( jQuery.nodeName( this, "select" ) ) {
 455                                 var values = jQuery.makeArray(value);
 456
 457                                 jQuery( "option", this ).each(function(){
 458                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 459                                                 jQuery.inArray( this.text, values ) >= 0);
 460                                 });
 461
 462                                 if ( !values.length )
 463                                         this.selectedIndex = -1;
 464
 465                         } else
 466                                 this.value = value;
 467                 });
 468         },
 469
 470         html: function( value ) {
 471                 return value === undefined ?
 472                         (this[0] ?
 473                                 this[0].innerHTML.replace(/ jQuery\d+="(?:\d+|null)"/g, "") :
 474                                 null) :
 475                         this.empty().append( value );
 476         },
 477
 478         replaceWith: function( value ) {
 479                 return this.after( value ).remove();
 480         },
 481
 482         eq: function( i ) {
 483                 return this.slice( i, +i + 1 );
 484         },
 485
 486         slice: function() {
 487                 return this.pushStack( Array.prototype.slice.apply( this, arguments ),
 488                         "slice", Array.prototype.slice.call(arguments).join(",") );
 489         },
 490
 491         map: function( callback ) {
 492                 return this.pushStack( jQuery.map(this, function(elem, i){
 493                         return callback.call( elem, i, elem );
 494                 }));
 495         },
 496
 497         andSelf: function() {
 498                 return this.add( this.prevObject );
 499         },
 500
 501         domManip: function( args, table, callback ) {
 502                 if ( this[0] ) {
 503                         var fragment = (this[0].ownerDocument || this[0]).createDocumentFragment(),
 504                                 scripts = jQuery.clean( args, (this[0].ownerDocument || this[0]), fragment ),
 505                                 first = fragment.firstChild,
 506                                 extra = this.length > 1 ? fragment.cloneNode(true) : fragment;
 507
 508                         if ( first )
 509                                 for ( var i = 0, l = this.length; i < l; i++ )
 510                                         callback.call( root(this[i], first), i > 0 ? extra.cloneNode(true) : fragment );
 511
 512                         if ( scripts )
 513                                 jQuery.each( scripts, evalScript );
 514                 }
 515
 516                 return this;
 517
 518                 function root( elem, cur ) {
 519                         return table && jQuery.nodeName(elem, "table") && jQuery.nodeName(cur, "tr") ?
 520                                 (elem.getElementsByTagName("tbody")[0] ||
 521                                 elem.appendChild(elem.ownerDocument.createElement("tbody"))) :
 522                                 elem;
 523                 }
 524         }
 525 };
 526
 527 // Give the init function the jQuery prototype for later instantiation
 528 jQuery.fn.init.prototype = jQuery.fn;
 529
 530 function evalScript( i, elem ) {
 531         if ( elem.src )
 532                 jQuery.ajax({
 533                         url: elem.src,
 534                         async: false,
 535                         dataType: "script"
 536                 });
 537
 538         else
 539                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 540
 541         if ( elem.parentNode )
 542                 elem.parentNode.removeChild( elem );
 543 }
 544
 545 function now(){
 546         return +new Date;
 547 }
 548
 549 jQuery.extend = jQuery.fn.extend = function() {
 550         // copy reference to target object
 551         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 552
 553         // Handle a deep copy situation
 554         if ( typeof target === "boolean" ) {
 555                 deep = target;
 556                 target = arguments[1] || {};
 557                 // skip the boolean and the target
 558                 i = 2;
 559         }
 560
 561         // Handle case when target is a string or something (possible in deep copy)
 562         if ( typeof target !== "object" && !jQuery.isFunction(target) )
 563                 target = {};
 564
 565         // extend jQuery itself if only one argument is passed
 566         if ( length == i ) {
 567                 target = this;
 568                 --i;
 569         }
 570
 571         for ( ; i < length; i++ )
 572                 // Only deal with non-null/undefined values
 573                 if ( (options = arguments[ i ]) != null )
 574                         // Extend the base object
 575                         for ( var name in options ) {
 576                                 var src = target[ name ], copy = options[ name ];
 577
 578                                 // Prevent never-ending loop
 579                                 if ( target === copy )
 580                                         continue;
 581
 582                                 // Recurse if we're merging object values
 583                                 if ( deep && copy && typeof copy === "object" && !copy.nodeType )
 584                                         target[ name ] = jQuery.extend( deep,
 585                                                 // Never move original objects, clone them
 586                                                 src || ( copy.length != null ? [ ] : { } )
 587                                         , copy );
 588
 589                                 // Don't bring in undefined values
 590                                 else if ( copy !== undefined )
 591                                         target[ name ] = copy;
 592
 593                         }
 594
 595         // Return the modified object
 596         return target;
 597 };
 598
 599 // exclude the following css properties to add px
 600 var     exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 601         // cache defaultView
 602         defaultView = document.defaultView || {},
 603         toString = Object.prototype.toString;
 604
 605 jQuery.extend({
 606         noConflict: function( deep ) {
 607                 window.$ = _$;
 608
 609                 if ( deep )
 610                         window.jQuery = _jQuery;
 611
 612                 return jQuery;
 613         },
 614
 615         // See test/unit/core.js for details concerning isFunction.
 616         // Since version 1.3, DOM methods and functions like alert
 617         // aren't supported. They return false on IE (#2968).
 618         isFunction: function( obj ) {
 619                 return toString.call(obj) === "[object Function]";
 620         },
 621
 622         isArray: function( obj ) {
 623                 return toString.call(obj) === "[object Array]";
 624         },
 625
 626         // check if an element is in a (or is an) XML document
 627         isXMLDoc: function( elem ) {
 628                 return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
 629                         !!elem.ownerDocument && jQuery.isXMLDoc( elem.ownerDocument );
 630         },
 631
 632         // Evalulates a script in a global context
 633         globalEval: function( data ) {
 634                 if ( data && /\S/.test(data) ) {
 635                         // Inspired by code by Andrea Giammarchi
 636                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 637                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 638                                 script = document.createElement("script");
 639
 640                         script.type = "text/javascript";
 641                         if ( jQuery.support.scriptEval )
 642                                 script.appendChild( document.createTextNode( data ) );
 643                         else
 644                                 script.text = data;
 645
 646                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 647                         // This arises when a base node is used (#2709).
 648                         head.insertBefore( script, head.firstChild );
 649                         head.removeChild( script );
 650                 }
 651         },
 652
 653         nodeName: function( elem, name ) {
 654                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 655         },
 656
 657         // args is for internal usage only
 658         each: function( object, callback, args ) {
 659                 var name, i = 0, length = object.length;
 660
 661                 if ( args ) {
 662                         if ( length === undefined ) {
 663                                 for ( name in object )
 664                                         if ( callback.apply( object[ name ], args ) === false )
 665                                                 break;
 666                         } else
 667                                 for ( ; i < length; )
 668                                         if ( callback.apply( object[ i++ ], args ) === false )
 669                                                 break;
 670
 671                 // A special, fast, case for the most common use of each
 672                 } else {
 673                         if ( length === undefined ) {
 674                                 for ( name in object )
 675                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 676                                                 break;
 677                         } else
 678                                 for ( var value = object[0];
 679                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 680                 }
 681
 682                 return object;
 683         },
 684
 685         prop: function( elem, value, type, i, name ) {
 686                 // Handle executable functions
 687                 if ( jQuery.isFunction( value ) )
 688                         value = value.call( elem, i );
 689
 690                 // Handle passing in a number to a CSS property
 691                 return typeof value === "number" && type == "curCSS" && !exclude.test( name ) ?
 692                         value + "px" :
 693                         value;
 694         },
 695
 696         className: {
 697                 // internal only, use addClass("class")
 698                 add: function( elem, classNames ) {
 699                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 700                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 701                                         elem.className += (elem.className ? " " : "") + className;
 702                         });
 703                 },
 704
 705                 // internal only, use removeClass("class")
 706                 remove: function( elem, classNames ) {
 707                         if (elem.nodeType == 1)
 708                                 elem.className = classNames !== undefined ?
 709                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 710                                                 return !jQuery.className.has( classNames, className );
 711                                         }).join(" ") :
 712                                         "";
 713                 },
 714
 715                 // internal only, use hasClass("class")
 716                 has: function( elem, className ) {
 717                         return elem && jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 718                 }
 719         },
 720
 721         // A method for quickly swapping in/out CSS properties to get correct calculations
 722         swap: function( elem, options, callback ) {
 723                 var old = {};
 724                 // Remember the old values, and insert the new ones
 725                 for ( var name in options ) {
 726                         old[ name ] = elem.style[ name ];
 727                         elem.style[ name ] = options[ name ];
 728                 }
 729
 730                 callback.call( elem );
 731
 732                 // Revert the old values
 733                 for ( var name in options )
 734                         elem.style[ name ] = old[ name ];
 735         },
 736
 737         css: function( elem, name, force ) {
 738                 if ( name == "width" || name == "height" ) {
 739                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 740
 741                         function getWH() {
 742                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 743                                 var padding = 0, border = 0;
 744                                 jQuery.each( which, function() {
 745                                         padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 746                                         border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 747                                 });
 748                                 val -= Math.round(padding + border);
 749                         }
 750
 751                         if ( jQuery(elem).is(":visible") )
 752                                 getWH();
 753                         else
 754                                 jQuery.swap( elem, props, getWH );
 755
 756                         return Math.max(0, val);
 757                 }
 758
 759                 return jQuery.curCSS( elem, name, force );
 760         },
 761
 762         curCSS: function( elem, name, force ) {
 763                 var ret, style = elem.style;
 764
 765                 // We need to handle opacity special in IE
 766                 if ( name == "opacity" && !jQuery.support.opacity ) {
 767                         ret = jQuery.attr( style, "opacity" );
 768
 769                         return ret == "" ?
 770                                 "1" :
 771                                 ret;
 772                 }
 773
 774                 // Make sure we're using the right name for getting the float value
 775                 if ( name.match( /float/i ) )
 776                         name = styleFloat;
 777
 778                 if ( !force && style && style[ name ] )
 779                         ret = style[ name ];
 780
 781                 else if ( defaultView.getComputedStyle ) {
 782
 783                         // Only "float" is needed here
 784                         if ( name.match( /float/i ) )
 785                                 name = "float";
 786
 787                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 788
 789                         var computedStyle = defaultView.getComputedStyle( elem, null );
 790
 791                         if ( computedStyle )
 792                                 ret = computedStyle.getPropertyValue( name );
 793
 794                         // We should always get a number back from opacity
 795                         if ( name == "opacity" && ret == "" )
 796                                 ret = "1";
 797
 798                 } else if ( elem.currentStyle ) {
 799                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 800                                 return letter.toUpperCase();
 801                         });
 802
 803                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 804
 805                         // From the awesome hack by Dean Edwards
 806                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 807
 808                         // If we're not dealing with a regular pixel number
 809                         // but a number that has a weird ending, we need to convert it to pixels
 810                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 811                                 // Remember the original values
 812                                 var left = style.left, rsLeft = elem.runtimeStyle.left;
 813
 814                                 // Put in the new values to get a computed value out
 815                                 elem.runtimeStyle.left = elem.currentStyle.left;
 816                                 style.left = ret || 0;
 817                                 ret = style.pixelLeft + "px";
 818
 819                                 // Revert the changed values
 820                                 style.left = left;
 821                                 elem.runtimeStyle.left = rsLeft;
 822                         }
 823                 }
 824
 825                 return ret;
 826         },
 827
 828         clean: function( elems, context, fragment ) {
 829                 context = context || document;
 830
 831                 // !context.createElement fails in IE with an error but returns typeof 'object'
 832                 if ( typeof context.createElement === "undefined" )
 833                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 834
 835                 // If a single string is passed in and it's a single tag
 836                 // just do a createElement and skip the rest
 837                 if ( !fragment && elems.length === 1 && typeof elems[0] === "string" ) {
 838                         var match = /^<(\w+)\s*\/?>$/.exec(elems[0]);
 839                         if ( match )
 840                                 return [ context.createElement( match[1] ) ];
 841                 }
 842
 843                 var ret = [], scripts = [], div = context.createElement("div");
 844
 845                 jQuery.each(elems, function(i, elem){
 846                         if ( typeof elem === "number" )
 847                                 elem += '';
 848
 849                         if ( !elem )
 850                                 return;
 851
 852                         // Convert html string into DOM nodes
 853                         if ( typeof elem === "string" ) {
 854                                 // Fix "XHTML"-style tags in all browsers
 855                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 856                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 857                                                 all :
 858                                                 front + "></" + tag + ">";
 859                                 });
 860
 861                                 // Trim whitespace, otherwise indexOf won't work as expected
 862                                 var tags = elem.replace(/^\s+/, "").substring(0, 10).toLowerCase();
 863
 864                                 var wrap =
 865                                         // option or optgroup
 866                                         !tags.indexOf("<opt") &&
 867                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 868
 869                                         !tags.indexOf("<leg") &&
 870                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 871
 872                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 873                                         [ 1, "<table>", "</table>" ] ||
 874
 875                                         !tags.indexOf("<tr") &&
 876                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 877
 878                                         // <thead> matched above
 879                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 880                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 881
 882                                         !tags.indexOf("<col") &&
 883                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 884
 885                                         // IE can't serialize <link> and <script> tags normally
 886                                         !jQuery.support.htmlSerialize &&
 887                                         [ 1, "div<div>", "</div>" ] ||
 888
 889                                         [ 0, "", "" ];
 890
 891                                 // Go to html and back, then peel off extra wrappers
 892                                 div.innerHTML = wrap[1] + elem + wrap[2];
 893
 894                                 // Move to the right depth
 895                                 while ( wrap[0]-- )
 896                                         div = div.lastChild;
 897
 898                                 // Remove IE's autoinserted <tbody> from table fragments
 899                                 if ( !jQuery.support.tbody ) {
 900
 901                                         // String was a <table>, *may* have spurious <tbody>
 902                                         var hasBody = /<tbody/i.test(elem),
 903                                                 tbody = !tags.indexOf("<table") && !hasBody ?
 904                                                         div.firstChild && div.firstChild.childNodes :
 905
 906                                                 // String was a bare <thead> or <tfoot>
 907                                                 wrap[1] == "<table>" && !hasBody ?
 908                                                         div.childNodes :
 909                                                         [];
 910
 911                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
 912                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
 913                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
 914
 915                                         }
 916
 917                                 // IE completely kills leading whitespace when innerHTML is used
 918                                 if ( !jQuery.support.leadingWhitespace && /^\s/.test( elem ) )
 919                                         div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
 920
 921                                 elem = jQuery.makeArray( div.childNodes );
 922                         }
 923
 924                         if ( elem.nodeType )
 925                                 ret.push( elem );
 926                         else
 927                                 ret = jQuery.merge( ret, elem );
 928
 929                 });
 930
 931                 if ( fragment ) {
 932                         for ( var i = 0; ret[i]; i++ ) {
 933                                 if ( jQuery.nodeName( ret[i], "script" ) && (!ret[i].type || ret[i].type.toLowerCase() === "text/javascript") ) {
 934                                         scripts.push( ret[i].parentNode ? ret[i].parentNode.removeChild( ret[i] ) : ret[i] );
 935                                 } else {
 936                                         if ( ret[i].nodeType === 1 )
 937                                                 ret.splice.apply( ret, [i + 1, 0].concat(jQuery.makeArray(ret[i].getElementsByTagName("script"))) );
 938                                         fragment.appendChild( ret[i] );
 939                                 }
 940                         }
 941
 942                         return scripts;
 943                 }
 944
 945                 return ret;
 946         },
 947
 948         attr: function( elem, name, value ) {
 949                 // don't set attributes on text and comment nodes
 950                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
 951                         return undefined;
 952
 953                 var notxml = !jQuery.isXMLDoc( elem ),
 954                         // Whether we are setting (or getting)
 955                         set = value !== undefined;
 956
 957                 // Try to normalize/fix the name
 958                 name = notxml && jQuery.props[ name ] || name;
 959
 960                 // Only do all the following if this is a node (faster for style)
 961                 // IE elem.getAttribute passes even for style
 962                 if ( elem.tagName ) {
 963
 964                         // These attributes require special treatment
 965                         var special = /href|src|style/.test( name );
 966
 967                         // Safari mis-reports the default selected property of a hidden option
 968                         // Accessing the parent's selectedIndex property fixes it
 969                         if ( name == "selected" && elem.parentNode )
 970                                 elem.parentNode.selectedIndex;
 971
 972                         // If applicable, access the attribute via the DOM 0 way
 973                         if ( name in elem && notxml && !special ) {
 974                                 if ( set ){
 975                                         // We can't allow the type property to be changed (since it causes problems in IE)
 976                                         if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
 977                                                 throw "type property can't be changed";
 978
 979                                         elem[ name ] = value;
 980                                 }
 981
 982                                 // browsers index elements by id/name on forms, give priority to attributes.
 983                                 if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
 984                                         return elem.getAttributeNode( name ).nodeValue;
 985
 986                                 // elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
 987                                 // http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
 988                                 if ( name == "tabIndex" ) {
 989                                         var attributeNode = elem.getAttributeNode( "tabIndex" );
 990                                         return attributeNode && attributeNode.specified
 991                                                 ? attributeNode.value
 992                                                 : elem.nodeName.match(/(button|input|object|select|textarea)/i)
 993                                                         ? 0
 994                                                         : elem.nodeName.match(/^(a|area)$/i) && elem.href
 995                                                                 ? 0
 996                                                                 : undefined;
 997                                 }
 998
 999                                 return elem[ name ];
1000                         }
1001
1002                         if ( !jQuery.support.style && notxml &&  name == "style" )
1003                                 return jQuery.attr( elem.style, "cssText", value );
1004
1005                         if ( set )
1006                                 // convert the value to a string (all browsers do this but IE) see #1070
1007                                 elem.setAttribute( name, "" + value );
1008
1009                         var attr = !jQuery.support.hrefNormalized && notxml && special
1010                                         // Some attributes require a special call on IE
1011                                         ? elem.getAttribute( name, 2 )
1012                                         : elem.getAttribute( name );
1013
1014                         // Non-existent attributes return null, we normalize to undefined
1015                         return attr === null ? undefined : attr;
1016                 }
1017
1018                 // elem is actually elem.style ... set the style
1019
1020                 // IE uses filters for opacity
1021                 if ( !jQuery.support.opacity && name == "opacity" ) {
1022                         if ( set ) {
1023                                 // IE has trouble with opacity if it does not have layout
1024                                 // Force it by setting the zoom level
1025                                 elem.zoom = 1;
1026
1027                                 // Set the alpha filter to set the opacity
1028                                 elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1029                                         (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1030                         }
1031
1032                         return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1033                                 (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
1034                                 "";
1035                 }
1036
1037                 name = name.replace(/-([a-z])/ig, function(all, letter){
1038                         return letter.toUpperCase();
1039                 });
1040
1041                 if ( set )
1042                         elem[ name ] = value;
1043
1044                 return elem[ name ];
1045         },
1046
1047         trim: function( text ) {
1048                 return (text || "").replace( /^\s+|\s+$/g, "" );
1049         },
1050
1051         makeArray: function( array ) {
1052                 var ret = [];
1053
1054                 if( array != null ){
1055                         var i = array.length;
1056                         // The window, strings (and functions) also have 'length'
1057                         if( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval )
1058                                 ret[0] = array;
1059                         else
1060                                 while( i )
1061                                         ret[--i] = array[i];
1062                 }
1063
1064                 return ret;
1065         },
1066
1067         inArray: function( elem, array ) {
1068                 for ( var i = 0, length = array.length; i < length; i++ )
1069                 // Use === because on IE, window == document
1070                         if ( array[ i ] === elem )
1071                                 return i;
1072
1073                 return -1;
1074         },
1075
1076         merge: function( first, second ) {
1077                 // We have to loop this way because IE & Opera overwrite the length
1078                 // expando of getElementsByTagName
1079                 var i = 0, elem, pos = first.length;
1080                 // Also, we need to make sure that the correct elements are being returned
1081                 // (IE returns comment nodes in a '*' query)
1082                 if ( !jQuery.support.getAll ) {
1083                         while ( (elem = second[ i++ ]) != null )
1084                                 if ( elem.nodeType != 8 )
1085                                         first[ pos++ ] = elem;
1086
1087                 } else
1088                         while ( (elem = second[ i++ ]) != null )
1089                                 first[ pos++ ] = elem;
1090
1091                 return first;
1092         },
1093
1094         unique: function( array ) {
1095                 var ret = [], done = {};
1096
1097                 try {
1098
1099                         for ( var i = 0, length = array.length; i < length; i++ ) {
1100                                 var id = jQuery.data( array[ i ] );
1101
1102                                 if ( !done[ id ] ) {
1103                                         done[ id ] = true;
1104                                         ret.push( array[ i ] );
1105                                 }
1106                         }
1107
1108                 } catch( e ) {
1109                         ret = array;
1110                 }
1111
1112                 return ret;
1113         },
1114
1115         grep: function( elems, callback, inv ) {
1116                 var ret = [];
1117
1118                 // Go through the array, only saving the items
1119                 // that pass the validator function
1120                 for ( var i = 0, length = elems.length; i < length; i++ )
1121                         if ( !inv != !callback( elems[ i ], i ) )
1122                                 ret.push( elems[ i ] );
1123
1124                 return ret;
1125         },
1126
1127         map: function( elems, callback ) {
1128                 var ret = [];
1129
1130                 // Go through the array, translating each of the items to their
1131                 // new value (or values).
1132                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1133                         var value = callback( elems[ i ], i );
1134
1135                         if ( value != null )
1136                                 ret[ ret.length ] = value;
1137                 }
1138
1139                 return ret.concat.apply( [], ret );
1140         }
1141 });
1142
1143 // Use of jQuery.browser is deprecated.
1144 // It's included for backwards compatibility and plugins,
1145 // although they should work to migrate away.
1146
1147 var userAgent = navigator.userAgent.toLowerCase();
1148
1149 // Figure out what browser is being used
1150 jQuery.browser = {
1151         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
1152         safari: /webkit/.test( userAgent ),
1153         opera: /opera/.test( userAgent ),
1154         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1155         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1156 };
1157
1158 jQuery.each({
1159         parent: function(elem){return elem.parentNode;},
1160         parents: function(elem){return jQuery.dir(elem,"parentNode");},
1161         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
1162         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
1163         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
1164         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
1165         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
1166         children: function(elem){return jQuery.sibling(elem.firstChild);},
1167         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
1168 }, function(name, fn){
1169         jQuery.fn[ name ] = function( selector ) {
1170                 var ret = jQuery.map( this, fn );
1171
1172                 if ( selector && typeof selector == "string" )
1173                         ret = jQuery.multiFilter( selector, ret );
1174
1175                 return this.pushStack( jQuery.unique( ret ), name, selector );
1176         };
1177 });
1178
1179 jQuery.each({
1180         appendTo: "append",
1181         prependTo: "prepend",
1182         insertBefore: "before",
1183         insertAfter: "after",
1184         replaceAll: "replaceWith"
1185 }, function(name, original){
1186         jQuery.fn[ name ] = function() {
1187                 var args = arguments;
1188
1189                 return this.each(function(){
1190                         for ( var i = 0, length = args.length; i < length; i++ )
1191                                 jQuery( args[ i ] )[ original ]( this );
1192                 });
1193         };
1194 });
1195
1196 jQuery.each({
1197         removeAttr: function( name ) {
1198                 jQuery.attr( this, name, "" );
1199                 if (this.nodeType == 1)
1200                         this.removeAttribute( name );
1201         },
1202
1203         addClass: function( classNames ) {
1204                 jQuery.className.add( this, classNames );
1205         },
1206
1207         removeClass: function( classNames ) {
1208                 jQuery.className.remove( this, classNames );
1209         },
1210
1211         toggleClass: function( classNames, state ) {
1212                 if( typeof state !== "boolean" )
1213                         state = !jQuery.className.has( this, classNames );
1214                 jQuery.className[ state ? "add" : "remove" ]( this, classNames );
1215         },
1216
1217         remove: function( selector ) {
1218                 if ( !selector || jQuery.filter( selector, [ this ] ).length ) {
1219                         // Prevent memory leaks
1220                         jQuery( "*", this ).add([this]).each(function(){
1221                                 jQuery.event.remove(this);
1222                                 jQuery.removeData(this);
1223                         });
1224                         if (this.parentNode)
1225                                 this.parentNode.removeChild( this );
1226                 }
1227         },
1228
1229         empty: function() {
1230                 // Remove element nodes and prevent memory leaks
1231                 jQuery( ">*", this ).remove();
1232
1233                 // Remove any remaining nodes
1234                 while ( this.firstChild )
1235                         this.removeChild( this.firstChild );
1236         }
1237 }, function(name, fn){
1238         jQuery.fn[ name ] = function(){
1239                 return this.each( fn, arguments );
1240         };
1241 });
1242
1243 // Helper function used by the dimensions and offset modules
1244 function num(elem, prop) {
1245         return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
1246 }