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 selector === undefined ?
  14                         rootjQuery :
  15                         new jQuery.fn.init( selector, context );
  16         },
  17
  18         // A simple way to check for HTML strings or ID strings
  19         // (both of which we optimize for)
  20         quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
  21         // Is it a simple selector
  22         isSimple = /^.[^:#\[\.,]*$/;
  23
  24 jQuery.fn = jQuery.prototype = {
  25         init: function( selector, context ) {
  26                 // Handle $("") or $(null)
  27                 if ( !selector ) {
  28                         this.length = 0;
  29                         return this;
  30                 }
  31
  32                 // Handle $(DOMElement)
  33                 if ( selector.nodeType ) {
  34                         this[0] = selector;
  35                         this.length = 1;
  36                         this.context = selector;
  37                         return this;
  38                 }
  39
  40                 // Handle HTML strings
  41                 if ( typeof selector === "string" ) {
  42                         // Are we dealing with HTML string or an ID?
  43                         var match = quickExpr.exec( selector );
  44
  45                         // Verify a match, and that no context was specified for #id
  46                         if ( match && (match[1] || !context) ) {
  47
  48                                 // HANDLE: $(html) -> $(array)
  49                                 if ( match[1] ) {
  50                                         selector = jQuery.clean( [ match[1] ], context );
  51
  52                                 // HANDLE: $("#id")
  53                                 } else {
  54                                         var elem = document.getElementById( match[3] );
  55
  56                                         // Handle the case where IE and Opera return items
  57                                         // by name instead of ID
  58                                         if ( elem && elem.id != match[3] ) {
  59                                                 return rootjQuery.find( selector );
  60                                         }
  61
  62                                         // Otherwise, we inject the element directly into the jQuery object
  63                                         var ret = jQuery( elem || null );
  64                                         ret.context = document;
  65                                         ret.selector = selector;
  66                                         return ret;
  67                                 }
  68
  69                         // HANDLE: $(expr, $(...))
  70                         } else if ( !context || context.jquery ) {
  71                                 return (context || rootjQuery).find( selector );
  72
  73                         // HANDLE: $(expr, context)
  74                         // (which is just equivalent to: $(content).find(expr)
  75                         } else {
  76                                 return jQuery( context ).find( selector );
  77                         }
  78
  79                 // HANDLE: $(function)
  80                 // Shortcut for document ready
  81                 } else if ( jQuery.isFunction( selector ) ) {
  82                         return rootjQuery.ready( selector );
  83                 }
  84
  85                 // Make sure that old selector state is passed along
  86                 if ( selector.selector && selector.context ) {
  87                         this.selector = selector.selector;
  88                         this.context = selector.context;
  89                 }
  90
  91                 return this.setArray(jQuery.isArray( selector ) ?
  92                         selector :
  93                         jQuery.makeArray(selector));
  94         },
  95
  96         // Start with an empty selector
  97         selector: "",
  98
  99         // The current version of jQuery being used
 100         jquery: "@VERSION",
 101
 102         // The number of elements contained in the matched element set
 103         size: function() {
 104                 return this.length;
 105         },
 106
 107         // Get the Nth element in the matched element set OR
 108         // Get the whole matched element set as a clean array
 109         get: function( num ) {
 110                 return num === undefined ?
 111
 112                         // Return a 'clean' array
 113                         Array.prototype.slice.call( this ) :
 114
 115                         // Return just the object
 116                         this[ num ];
 117         },
 118
 119         // Take an array of elements and push it onto the stack
 120         // (returning the new matched element set)
 121         pushStack: function( elems, name, selector ) {
 122                 // Build a new jQuery matched element set
 123                 var ret = jQuery( elems || null );
 124
 125                 // Add the old object onto the stack (as a reference)
 126                 ret.prevObject = this;
 127
 128                 ret.context = this.context;
 129
 130                 if ( name === "find" )
 131                         ret.selector = this.selector + (this.selector ? " " : "") + selector;
 132                 else if ( name )
 133                         ret.selector = this.selector + "." + name + "(" + selector + ")";
 134
 135                 // Return the newly-formed element set
 136                 return ret;
 137         },
 138
 139         // Force the current matched set of elements to become
 140         // the specified array of elements (destroying the stack in the process)
 141         // You should use pushStack() in order to do this, but maintain the stack
 142         setArray: function( elems ) {
 143                 // Resetting the length to 0, then using the native Array push
 144                 // is a super-fast way to populate an object with array-like properties
 145                 this.length = 0;
 146                 Array.prototype.push.apply( this, elems );
 147
 148                 return this;
 149         },
 150
 151         // Execute a callback for every element in the matched set.
 152         // (You can seed the arguments with an array of args, but this is
 153         // only used internally.)
 154         each: function( callback, args ) {
 155                 return jQuery.each( this, callback, args );
 156         },
 157
 158         // Determine the position of an element within
 159         // the matched set of elements
 160         index: function( elem ) {
 161                 // Locate the position of the desired element
 162                 return jQuery.inArray(
 163                         // If it receives a jQuery object, the first element is used
 164                         elem && elem.jquery ? elem[0] : elem
 165                 , this );
 166         },
 167
 168         attr: function( name, value, type ) {
 169                 var options = name;
 170
 171                 // Look for the case where we're accessing a style value
 172                 if ( typeof name === "string" )
 173                         if ( value === undefined )
 174                                 return this[0] && jQuery[ type || "attr" ]( this[0], name );
 175
 176                         else {
 177                                 options = {};
 178                                 options[ name ] = value;
 179                         }
 180
 181                 // Check to see if we're setting style values
 182                 return this.each(function(i){
 183                         // Set all the styles
 184                         for ( name in options )
 185                                 jQuery.attr(
 186                                         type ?
 187                                                 this.style :
 188                                                 this,
 189                                         name, jQuery.prop( this, options[ name ], type, i, name )
 190                                 );
 191                 });
 192         },
 193
 194         css: function( key, value ) {
 195                 // ignore negative width and height values
 196                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 197                         value = undefined;
 198                 return this.attr( key, value, "curCSS" );
 199         },
 200
 201         text: function( text ) {
 202                 if ( typeof text !== "object" && text != null )
 203                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 204
 205                 var ret = "";
 206
 207                 jQuery.each( text || this, function(){
 208                         jQuery.each( this.childNodes, function(){
 209                                 if ( this.nodeType != 8 )
 210                                         ret += this.nodeType != 1 ?
 211                                                 this.nodeValue :
 212                                                 jQuery.fn.text( [ this ] );
 213                         });
 214                 });
 215
 216                 return ret;
 217         },
 218
 219         wrapAll: function( html ) {
 220                 if ( this[0] ) {
 221                         // The elements to wrap the target around
 222                         var wrap = jQuery( html, this[0].ownerDocument ).clone();
 223
 224                         if ( this[0].parentNode )
 225                                 wrap.insertBefore( this[0] );
 226
 227                         wrap.map(function(){
 228                                 var elem = this;
 229
 230                                 while ( elem.firstChild )
 231                                         elem = elem.firstChild;
 232
 233                                 return elem;
 234                         }).append(this);
 235                 }
 236
 237                 return this;
 238         },
 239
 240         wrapInner: function( html ) {
 241                 return this.each(function(){
 242                         jQuery( this ).contents().wrapAll( html );
 243                 });
 244         },
 245
 246         wrap: function( html ) {
 247                 return this.each(function(){
 248                         jQuery( this ).wrapAll( html );
 249                 });
 250         },
 251
 252         append: function() {
 253                 return this.domManip(arguments, true, function(elem){
 254                         if (this.nodeType == 1)
 255                                 this.appendChild( elem );
 256                 });
 257         },
 258
 259         prepend: function() {
 260                 return this.domManip(arguments, true, function(elem){
 261                         if (this.nodeType == 1)
 262                                 this.insertBefore( elem, this.firstChild );
 263                 });
 264         },
 265
 266         before: function() {
 267                 return this.domManip(arguments, false, function(elem){
 268                         this.parentNode.insertBefore( elem, this );
 269                 });
 270         },
 271
 272         after: function() {
 273                 return this.domManip(arguments, false, function(elem){
 274                         this.parentNode.insertBefore( elem, this.nextSibling );
 275                 });
 276         },
 277
 278         end: function() {
 279                 return this.prevObject || jQuery(null);
 280         },
 281
 282         // For internal use only.
 283         // Behaves like an Array's method, not like a jQuery method.
 284         push: [].push,
 285         sort: [].sort,
 286         splice: [].splice,
 287
 288         find: function( selector ) {
 289                 if ( this.length === 1 ) {
 290                         var ret = this.pushStack( "", "find", selector );
 291                         jQuery.find( selector, this[0], ret );
 292                         return ret;
 293                 } else {
 294                         return this.pushStack( jQuery.unique(jQuery.map(this, function(elem){
 295                                 return jQuery.find( selector, elem );
 296                         })), "find", selector );
 297                 }
 298         },
 299
 300         clone: function( events ) {
 301                 // Do the clone
 302                 var ret = this.map(function(){
 303                         if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) {
 304                                 // IE copies events bound via attachEvent when
 305                                 // using cloneNode. Calling detachEvent on the
 306                                 // clone will also remove the events from the orignal
 307                                 // In order to get around this, we use innerHTML.
 308                                 // Unfortunately, this means some modifications to
 309                                 // attributes in IE that are actually only stored
 310                                 // as properties will not be copied (such as the
 311                                 // the name attribute on an input).
 312                                 var html = this.outerHTML;
 313                                 if ( !html ) {
 314                                         var div = this.ownerDocument.createElement("div");
 315                                         div.appendChild( this.cloneNode(true) );
 316                                         html = div.innerHTML;
 317                                 }
 318
 319                                 return jQuery.clean([html.replace(/ jQuery\d+="(?:\d+|null)"/g, "").replace(/^\s*/, "")])[0];
 320                         } else
 321                                 return this.cloneNode(true);
 322                 });
 323
 324                 // Copy the events from the original to the clone
 325                 if ( events === true ) {
 326                         var orig = this.find("*").andSelf(), i = 0;
 327
 328                         ret.find("*").andSelf().each(function(){
 329                                 if ( this.nodeName !== orig[i].nodeName )
 330                                         return;
 331
 332                                 var events = jQuery.data( orig[i], "events" );
 333
 334                                 for ( var type in events ) {
 335                                         for ( var handler in events[ type ] ) {
 336                                                 jQuery.event.add( this, type, events[ type ][ handler ], events[ type ][ handler ].data );
 337                                         }
 338                                 }
 339
 340                                 i++;
 341                         });
 342                 }
 343
 344                 // Return the cloned set
 345                 return ret;
 346         },
 347
 348         filter: function( selector ) {
 349                 return this.pushStack(
 350                         jQuery.isFunction( selector ) &&
 351                         jQuery.grep(this, function(elem, i){
 352                                 return selector.call( elem, i );
 353                         }) ||
 354
 355                         jQuery.multiFilter( selector, jQuery.grep(this, function(elem){
 356                                 return elem.nodeType === 1;
 357                         }) ), "filter", selector );
 358         },
 359
 360         closest: function( selector ) {
 361                 var pos = jQuery.expr.match.POS.test( selector ) ? jQuery(selector) : null,
 362                         closer = 0;
 363
 364                 return this.map(function(){
 365                         var cur = this;
 366                         while ( cur && cur.ownerDocument ) {
 367                                 if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selector) ) {
 368                                         jQuery.data(cur, "closest", closer);
 369                                         return cur;
 370                                 }
 371                                 cur = cur.parentNode;
 372                                 closer++;
 373                         }
 374                 });
 375         },
 376
 377         not: function( selector ) {
 378                 if ( typeof selector === "string" )
 379                         // test special case where just one selector is passed in
 380                         if ( isSimple.test( selector ) )
 381                                 return this.pushStack( jQuery.multiFilter( selector, this, true ), "not", selector );
 382                         else
 383                                 selector = jQuery.multiFilter( selector, this );
 384
 385                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 386                 return this.filter(function() {
 387                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 388                 });
 389         },
 390
 391         add: function( selector ) {
 392                 return this.pushStack( jQuery.unique( jQuery.merge(
 393                         this.get(),
 394                         typeof selector === "string" ?
 395                                 jQuery( selector ) :
 396                                 jQuery.makeArray( selector )
 397                 )));
 398         },
 399
 400         is: function( selector ) {
 401                 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
 402         },
 403
 404         hasClass: function( selector ) {
 405                 return !!selector && this.is( "." + selector );
 406         },
 407
 408         val: function( value ) {
 409                 if ( value === undefined ) {
 410                         var elem = this[0];
 411
 412                         if ( elem ) {
 413                                 if( jQuery.nodeName( elem, 'option' ) )
 414                                         return (elem.attributes.value || {}).specified ? elem.value : elem.text;
 415
 416                                 // We need to handle select boxes special
 417                                 if ( jQuery.nodeName( elem, "select" ) ) {
 418                                         var index = elem.selectedIndex,
 419                                                 values = [],
 420                                                 options = elem.options,
 421                                                 one = elem.type == "select-one";
 422
 423                                         // Nothing was selected
 424                                         if ( index < 0 )
 425                                                 return null;
 426
 427                                         // Loop through all the selected options
 428                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 429                                                 var option = options[ i ];
 430
 431                                                 if ( option.selected ) {
 432                                                         // Get the specifc value for the option
 433                                                         value = jQuery(option).val();
 434
 435                                                         // We don't need an array for one selects
 436                                                         if ( one )
 437                                                                 return value;
 438
 439                                                         // Multi-Selects return an array
 440                                                         values.push( value );
 441                                                 }
 442                                         }
 443
 444                                         return values;
 445                                 }
 446
 447                                 // Everything else, we just grab the value
 448                                 return (elem.value || "").replace(/\r/g, "");
 449
 450                         }
 451
 452                         return undefined;
 453                 }
 454
 455                 if ( typeof value === "number" )
 456                         value += '';
 457
 458                 return this.each(function(){
 459                         if ( this.nodeType != 1 )
 460                                 return;
 461
 462                         if ( jQuery.isArray(value) && /radio|checkbox/.test( this.type ) )
 463                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 464                                         jQuery.inArray(this.name, value) >= 0);
 465
 466                         else if ( jQuery.nodeName( this, "select" ) ) {
 467                                 var values = jQuery.makeArray(value);
 468
 469                                 jQuery( "option", this ).each(function(){
 470                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 471                                                 jQuery.inArray( this.text, values ) >= 0);
 472                                 });
 473
 474                                 if ( !values.length )
 475                                         this.selectedIndex = -1;
 476
 477                         } else
 478                                 this.value = value;
 479                 });
 480         },
 481
 482         html: function( value ) {
 483                 return value === undefined ?
 484                         (this[0] ?
 485                                 this[0].innerHTML.replace(/ jQuery\d+="(?:\d+|null)"/g, "") :
 486                                 null) :
 487                         this.empty().append( value );
 488         },
 489
 490         replaceWith: function( value ) {
 491                 return this.after( value ).remove();
 492         },
 493
 494         eq: function( i ) {
 495                 return this.slice( i, +i + 1 );
 496         },
 497
 498         slice: function() {
 499                 return this.pushStack( Array.prototype.slice.apply( this, arguments ),
 500                         "slice", Array.prototype.slice.call(arguments).join(",") );
 501         },
 502
 503         map: function( callback ) {
 504                 return this.pushStack( jQuery.map(this, function(elem, i){
 505                         return callback.call( elem, i, elem );
 506                 }));
 507         },
 508
 509         andSelf: function() {
 510                 return this.add( this.prevObject );
 511         },
 512
 513         domManip: function( args, table, callback ) {
 514                 if ( this[0] ) {
 515                         var fragment = (this[0].ownerDocument || this[0]).createDocumentFragment(),
 516                                 scripts = jQuery.clean( args, (this[0].ownerDocument || this[0]), fragment ),
 517                                 first = fragment.firstChild;
 518
 519                         if ( first )
 520                                 for ( var i = 0, l = this.length; i < l; i++ )
 521                                         callback.call( root(this[i], first), this.length > 1 || i > 0 ?
 522                                                         fragment.cloneNode(true) : fragment );
 523
 524                         if ( scripts )
 525                                 jQuery.each( scripts, evalScript );
 526                 }
 527
 528                 return this;
 529
 530                 function root( elem, cur ) {
 531                         return table && jQuery.nodeName(elem, "table") && jQuery.nodeName(cur, "tr") ?
 532                                 (elem.getElementsByTagName("tbody")[0] ||
 533                                 elem.appendChild(elem.ownerDocument.createElement("tbody"))) :
 534                                 elem;
 535                 }
 536         }
 537 };
 538
 539 // Give the init function the jQuery prototype for later instantiation
 540 jQuery.fn.init.prototype = jQuery.fn;
 541
 542 function evalScript( i, elem ) {
 543         if ( elem.src )
 544                 jQuery.ajax({
 545                         url: elem.src,
 546                         async: false,
 547                         dataType: "script"
 548                 });
 549
 550         else
 551                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 552
 553         if ( elem.parentNode )
 554                 elem.parentNode.removeChild( elem );
 555 }
 556
 557 function now(){
 558         return +new Date;
 559 }
 560
 561 jQuery.extend = jQuery.fn.extend = function() {
 562         // copy reference to target object
 563         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 564
 565         // Handle a deep copy situation
 566         if ( typeof target === "boolean" ) {
 567                 deep = target;
 568                 target = arguments[1] || {};
 569                 // skip the boolean and the target
 570                 i = 2;
 571         }
 572
 573         // Handle case when target is a string or something (possible in deep copy)
 574         if ( typeof target !== "object" && !jQuery.isFunction(target) )
 575                 target = {};
 576
 577         // extend jQuery itself if only one argument is passed
 578         if ( length == i ) {
 579                 target = this;
 580                 --i;
 581         }
 582
 583         for ( ; i < length; i++ )
 584                 // Only deal with non-null/undefined values
 585                 if ( (options = arguments[ i ]) != null )
 586                         // Extend the base object
 587                         for ( var name in options ) {
 588                                 var src = target[ name ], copy = options[ name ];
 589
 590                                 // Prevent never-ending loop
 591                                 if ( target === copy )
 592                                         continue;
 593
 594                                 // Recurse if we're merging object values
 595                                 if ( deep && copy && typeof copy === "object" && !copy.nodeType )
 596                                         target[ name ] = jQuery.extend( deep,
 597                                                 // Never move original objects, clone them
 598                                                 src || ( copy.length != null ? [ ] : { } )
 599                                         , copy );
 600
 601                                 // Don't bring in undefined values
 602                                 else if ( copy !== undefined )
 603                                         target[ name ] = copy;
 604
 605                         }
 606
 607         // Return the modified object
 608         return target;
 609 };
 610
 611 // exclude the following css properties to add px
 612 var     exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 613         // cache defaultView
 614         defaultView = document.defaultView || {},
 615         toString = Object.prototype.toString;
 616
 617 jQuery.extend({
 618         noConflict: function( deep ) {
 619                 window.$ = _$;
 620
 621                 if ( deep )
 622                         window.jQuery = _jQuery;
 623
 624                 return jQuery;
 625         },
 626
 627         // See test/unit/core.js for details concerning isFunction.
 628         // Since version 1.3, DOM methods and functions like alert
 629         // aren't supported. They return false on IE (#2968).
 630         isFunction: function( obj ) {
 631                 return toString.call(obj) === "[object Function]";
 632         },
 633
 634         isArray: function( obj ) {
 635                 return toString.call(obj) === "[object Array]";
 636         },
 637
 638         // check if an element is in a (or is an) XML document
 639         isXMLDoc: function( elem ) {
 640                 return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
 641                         !!elem.ownerDocument && jQuery.isXMLDoc( elem.ownerDocument );
 642         },
 643
 644         // Evalulates a script in a global context
 645         globalEval: function( data ) {
 646                 if ( data && /\S/.test(data) ) {
 647                         // Inspired by code by Andrea Giammarchi
 648                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 649                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 650                                 script = document.createElement("script");
 651
 652                         script.type = "text/javascript";
 653                         if ( jQuery.support.scriptEval )
 654                                 script.appendChild( document.createTextNode( data ) );
 655                         else
 656                                 script.text = data;
 657
 658                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 659                         // This arises when a base node is used (#2709).
 660                         head.insertBefore( script, head.firstChild );
 661                         head.removeChild( script );
 662                 }
 663         },
 664
 665         nodeName: function( elem, name ) {
 666                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 667         },
 668
 669         // args is for internal usage only
 670         each: function( object, callback, args ) {
 671                 var name, i = 0, length = object.length;
 672
 673                 if ( args ) {
 674                         if ( length === undefined ) {
 675                                 for ( name in object )
 676                                         if ( callback.apply( object[ name ], args ) === false )
 677                                                 break;
 678                         } else
 679                                 for ( ; i < length; )
 680                                         if ( callback.apply( object[ i++ ], args ) === false )
 681                                                 break;
 682
 683                 // A special, fast, case for the most common use of each
 684                 } else {
 685                         if ( length === undefined ) {
 686                                 for ( name in object )
 687                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 688                                                 break;
 689                         } else
 690                                 for ( var value = object[0];
 691                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 692                 }
 693
 694                 return object;
 695         },
 696
 697         prop: function( elem, value, type, i, name ) {
 698                 // Handle executable functions
 699                 if ( jQuery.isFunction( value ) )
 700                         value = value.call( elem, i );
 701
 702                 // Handle passing in a number to a CSS property
 703                 return typeof value === "number" && type == "curCSS" && !exclude.test( name ) ?
 704                         value + "px" :
 705                         value;
 706         },
 707
 708         className: {
 709                 // internal only, use addClass("class")
 710                 add: function( elem, classNames ) {
 711                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 712                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 713                                         elem.className += (elem.className ? " " : "") + className;
 714                         });
 715                 },
 716
 717                 // internal only, use removeClass("class")
 718                 remove: function( elem, classNames ) {
 719                         if (elem.nodeType == 1)
 720                                 elem.className = classNames !== undefined ?
 721                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 722                                                 return !jQuery.className.has( classNames, className );
 723                                         }).join(" ") :
 724                                         "";
 725                 },
 726
 727                 // internal only, use hasClass("class")
 728                 has: function( elem, className ) {
 729                         return elem && jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 730                 }
 731         },
 732
 733         // A method for quickly swapping in/out CSS properties to get correct calculations
 734         swap: function( elem, options, callback ) {
 735                 var old = {};
 736                 // Remember the old values, and insert the new ones
 737                 for ( var name in options ) {
 738                         old[ name ] = elem.style[ name ];
 739                         elem.style[ name ] = options[ name ];
 740                 }
 741
 742                 callback.call( elem );
 743
 744                 // Revert the old values
 745                 for ( var name in options )
 746                         elem.style[ name ] = old[ name ];
 747         },
 748
 749         css: function( elem, name, force, extra ) {
 750                 if ( name == "width" || name == "height" ) {
 751                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 752
 753                         function getWH() {
 754                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 755
 756                                 if ( extra === "border" )
 757                                         return;
 758
 759                                 jQuery.each( which, function() {
 760                                         if ( !extra )
 761                                                 val -= parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 762                                         if ( extra === "margin" )
 763                                                 val += parseFloat(jQuery.curCSS( elem, "margin" + this, true)) || 0;
 764                                         else
 765                                                 val -= parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 766                                 });
 767                         }
 768
 769                         if ( elem.offsetWidth !== 0 )
 770                                 getWH();
 771                         else
 772                                 jQuery.swap( elem, props, getWH );
 773
 774                         return Math.max(0, Math.round(val));
 775                 }
 776
 777                 return jQuery.curCSS( elem, name, force );
 778         },
 779
 780         curCSS: function( elem, name, force ) {
 781                 var ret, style = elem.style;
 782
 783                 // We need to handle opacity special in IE
 784                 if ( name == "opacity" && !jQuery.support.opacity ) {
 785                         ret = jQuery.attr( style, "opacity" );
 786
 787                         return ret == "" ?
 788                                 "1" :
 789                                 ret;
 790                 }
 791
 792                 // Make sure we're using the right name for getting the float value
 793                 if ( name.match( /float/i ) )
 794                         name = styleFloat;
 795
 796                 if ( !force && style && style[ name ] )
 797                         ret = style[ name ];
 798
 799                 else if ( defaultView.getComputedStyle ) {
 800
 801                         // Only "float" is needed here
 802                         if ( name.match( /float/i ) )
 803                                 name = "float";
 804
 805                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 806
 807                         var computedStyle = defaultView.getComputedStyle( elem, null );
 808
 809                         if ( computedStyle )
 810                                 ret = computedStyle.getPropertyValue( name );
 811
 812                         // We should always get a number back from opacity
 813                         if ( name == "opacity" && ret == "" )
 814                                 ret = "1";
 815
 816                 } else if ( elem.currentStyle ) {
 817                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 818                                 return letter.toUpperCase();
 819                         });
 820
 821                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 822
 823                         // From the awesome hack by Dean Edwards
 824                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 825
 826                         // If we're not dealing with a regular pixel number
 827                         // but a number that has a weird ending, we need to convert it to pixels
 828                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 829                                 // Remember the original values
 830                                 var left = style.left, rsLeft = elem.runtimeStyle.left;
 831
 832                                 // Put in the new values to get a computed value out
 833                                 elem.runtimeStyle.left = elem.currentStyle.left;
 834                                 style.left = ret || 0;
 835                                 ret = style.pixelLeft + "px";
 836
 837                                 // Revert the changed values
 838                                 style.left = left;
 839                                 elem.runtimeStyle.left = rsLeft;
 840                         }
 841                 }
 842
 843                 return ret;
 844         },
 845
 846         clean: function( elems, context, fragment ) {
 847                 context = context || document;
 848
 849                 // !context.createElement fails in IE with an error but returns typeof 'object'
 850                 if ( typeof context.createElement === "undefined" )
 851                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 852
 853                 // If a single string is passed in and it's a single tag
 854                 // just do a createElement and skip the rest
 855                 if ( !fragment && elems.length === 1 && typeof elems[0] === "string" ) {
 856                         var match = /^<(\w+)\s*\/?>$/.exec(elems[0]);
 857                         if ( match )
 858                                 return [ context.createElement( match[1] ) ];
 859                 }
 860
 861                 var ret = [], scripts = [], div = context.createElement("div");
 862
 863                 jQuery.each(elems, function(i, elem){
 864                         if ( typeof elem === "number" )
 865                                 elem += '';
 866
 867                         if ( !elem )
 868                                 return;
 869
 870                         // Convert html string into DOM nodes
 871                         if ( typeof elem === "string" ) {
 872                                 // Fix "XHTML"-style tags in all browsers
 873                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 874                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 875                                                 all :
 876                                                 front + "></" + tag + ">";
 877                                 });
 878
 879                                 // Trim whitespace, otherwise indexOf won't work as expected
 880                                 var tags = elem.replace(/^\s+/, "").substring(0, 10).toLowerCase();
 881
 882                                 var wrap =
 883                                         // option or optgroup
 884                                         !tags.indexOf("<opt") &&
 885                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 886
 887                                         !tags.indexOf("<leg") &&
 888                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 889
 890                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 891                                         [ 1, "<table>", "</table>" ] ||
 892
 893                                         !tags.indexOf("<tr") &&
 894                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 895
 896                                         // <thead> matched above
 897                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 898                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 899
 900                                         !tags.indexOf("<col") &&
 901                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 902
 903                                         // IE can't serialize <link> and <script> tags normally
 904                                         !jQuery.support.htmlSerialize &&
 905                                         [ 1, "div<div>", "</div>" ] ||
 906
 907                                         [ 0, "", "" ];
 908
 909                                 // Go to html and back, then peel off extra wrappers
 910                                 div.innerHTML = wrap[1] + elem + wrap[2];
 911
 912                                 // Move to the right depth
 913                                 while ( wrap[0]-- )
 914                                         div = div.lastChild;
 915
 916                                 // Remove IE's autoinserted <tbody> from table fragments
 917                                 if ( !jQuery.support.tbody ) {
 918
 919                                         // String was a <table>, *may* have spurious <tbody>
 920                                         var hasBody = /<tbody/i.test(elem),
 921                                                 tbody = !tags.indexOf("<table") && !hasBody ?
 922                                                         div.firstChild && div.firstChild.childNodes :
 923
 924                                                 // String was a bare <thead> or <tfoot>
 925                                                 wrap[1] == "<table>" && !hasBody ?
 926                                                         div.childNodes :
 927                                                         [];
 928
 929                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
 930                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
 931                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
 932
 933                                         }
 934
 935                                 // IE completely kills leading whitespace when innerHTML is used
 936                                 if ( !jQuery.support.leadingWhitespace && /^\s/.test( elem ) )
 937                                         div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
 938
 939                                 elem = jQuery.makeArray( div.childNodes );
 940                         }
 941
 942                         if ( elem.nodeType )
 943                                 ret.push( elem );
 944                         else
 945                                 ret = jQuery.merge( ret, elem );
 946
 947                 });
 948
 949                 if ( fragment ) {
 950                         for ( var i = 0; ret[i]; i++ ) {
 951                                 if ( jQuery.nodeName( ret[i], "script" ) && (!ret[i].type || ret[i].type.toLowerCase() === "text/javascript") ) {
 952                                         scripts.push( ret[i].parentNode ? ret[i].parentNode.removeChild( ret[i] ) : ret[i] );
 953                                 } else {
 954                                         if ( ret[i].nodeType === 1 )
 955                                                 ret.splice.apply( ret, [i + 1, 0].concat(jQuery.makeArray(ret[i].getElementsByTagName("script"))) );
 956                                         fragment.appendChild( ret[i] );
 957                                 }
 958                         }
 959
 960                         return scripts;
 961                 }
 962
 963                 return ret;
 964         },
 965
 966         attr: function( elem, name, value ) {
 967                 // don't set attributes on text and comment nodes
 968                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
 969                         return undefined;
 970
 971                 var notxml = !jQuery.isXMLDoc( elem ),
 972                         // Whether we are setting (or getting)
 973                         set = value !== undefined;
 974
 975                 // Try to normalize/fix the name
 976                 name = notxml && jQuery.props[ name ] || name;
 977
 978                 // Only do all the following if this is a node (faster for style)
 979                 // IE elem.getAttribute passes even for style
 980                 if ( elem.tagName ) {
 981
 982                         // These attributes require special treatment
 983                         var special = /href|src|style/.test( name );
 984
 985                         // Safari mis-reports the default selected property of a hidden option
 986                         // Accessing the parent's selectedIndex property fixes it
 987                         if ( name == "selected" && elem.parentNode )
 988                                 elem.parentNode.selectedIndex;
 989
 990                         // If applicable, access the attribute via the DOM 0 way
 991                         if ( name in elem && notxml && !special ) {
 992                                 if ( set ){
 993                                         // We can't allow the type property to be changed (since it causes problems in IE)
 994                                         if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
 995                                                 throw "type property can't be changed";
 996
 997                                         elem[ name ] = value;
 998                                 }
 999
1000                                 // browsers index elements by id/name on forms, give priority to attributes.
1001                                 if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
1002                                         return elem.getAttributeNode( name ).nodeValue;
1003
1004                                 // elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
1005                                 // http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
1006                                 if ( name == "tabIndex" ) {
1007                                         var attributeNode = elem.getAttributeNode( "tabIndex" );
1008                                         return attributeNode && attributeNode.specified
1009                                                 ? attributeNode.value
1010                                                 : elem.nodeName.match(/(button|input|object|select|textarea)/i)
1011                                                         ? 0
1012                                                         : elem.nodeName.match(/^(a|area)$/i) && elem.href
1013                                                                 ? 0
1014                                                                 : undefined;
1015                                 }
1016
1017                                 return elem[ name ];
1018                         }
1019
1020                         if ( !jQuery.support.style && notxml &&  name == "style" )
1021                                 return jQuery.attr( elem.style, "cssText", value );
1022
1023                         if ( set )
1024                                 // convert the value to a string (all browsers do this but IE) see #1070
1025                                 elem.setAttribute( name, "" + value );
1026
1027                         var attr = !jQuery.support.hrefNormalized && notxml && special
1028                                         // Some attributes require a special call on IE
1029                                         ? elem.getAttribute( name, 2 )
1030                                         : elem.getAttribute( name );
1031
1032                         // Non-existent attributes return null, we normalize to undefined
1033                         return attr === null ? undefined : attr;
1034                 }
1035
1036                 // elem is actually elem.style ... set the style
1037
1038                 // IE uses filters for opacity
1039                 if ( !jQuery.support.opacity && name == "opacity" ) {
1040                         if ( set ) {
1041                                 // IE has trouble with opacity if it does not have layout
1042                                 // Force it by setting the zoom level
1043                                 elem.zoom = 1;
1044
1045                                 // Set the alpha filter to set the opacity
1046                                 elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1047                                         (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1048                         }
1049
1050                         return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1051                                 (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
1052                                 "";
1053                 }
1054
1055                 name = name.replace(/-([a-z])/ig, function(all, letter){
1056                         return letter.toUpperCase();
1057                 });
1058
1059                 if ( set )
1060                         elem[ name ] = value;
1061
1062                 return elem[ name ];
1063         },
1064
1065         trim: function( text ) {
1066                 return (text || "").replace( /^\s+|\s+$/g, "" );
1067         },
1068
1069         makeArray: function( array ) {
1070                 var ret = [];
1071
1072                 if( array != null ){
1073                         var i = array.length;
1074                         // The window, strings (and functions) also have 'length'
1075                         if( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval )
1076                                 ret[0] = array;
1077                         else
1078                                 while( i )
1079                                         ret[--i] = array[i];
1080                 }
1081
1082                 return ret;
1083         },
1084
1085         inArray: function( elem, array ) {
1086                 for ( var i = 0, length = array.length; i < length; i++ )
1087                 // Use === because on IE, window == document
1088                         if ( array[ i ] === elem )
1089                                 return i;
1090
1091                 return -1;
1092         },
1093
1094         merge: function( first, second ) {
1095                 // We have to loop this way because IE & Opera overwrite the length
1096                 // expando of getElementsByTagName
1097                 var i = 0, elem, pos = first.length;
1098                 // Also, we need to make sure that the correct elements are being returned
1099                 // (IE returns comment nodes in a '*' query)
1100                 if ( !jQuery.support.getAll ) {
1101                         while ( (elem = second[ i++ ]) != null )
1102                                 if ( elem.nodeType != 8 )
1103                                         first[ pos++ ] = elem;
1104
1105                 } else
1106                         while ( (elem = second[ i++ ]) != null )
1107                                 first[ pos++ ] = elem;
1108
1109                 return first;
1110         },
1111
1112         unique: function( array ) {
1113                 var ret = [], done = {};
1114
1115                 try {
1116
1117                         for ( var i = 0, length = array.length; i < length; i++ ) {
1118                                 var id = jQuery.data( array[ i ] );
1119
1120                                 if ( !done[ id ] ) {
1121                                         done[ id ] = true;
1122                                         ret.push( array[ i ] );
1123                                 }
1124                         }
1125
1126                 } catch( e ) {
1127                         ret = array;
1128                 }
1129
1130                 return ret;
1131         },
1132
1133         grep: function( elems, callback, inv ) {
1134                 var ret = [];
1135
1136                 // Go through the array, only saving the items
1137                 // that pass the validator function
1138                 for ( var i = 0, length = elems.length; i < length; i++ )
1139                         if ( !inv != !callback( elems[ i ], i ) )
1140                                 ret.push( elems[ i ] );
1141
1142                 return ret;
1143         },
1144
1145         map: function( elems, callback ) {
1146                 var ret = [];
1147
1148                 // Go through the array, translating each of the items to their
1149                 // new value (or values).
1150                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1151                         var value = callback( elems[ i ], i );
1152
1153                         if ( value != null )
1154                                 ret[ ret.length ] = value;
1155                 }
1156
1157                 return ret.concat.apply( [], ret );
1158         }
1159 });
1160
1161 // All jQuery objects should point back to these
1162 var rootjQuery = jQuery(document);
1163
1164 // Use of jQuery.browser is deprecated.
1165 // It's included for backwards compatibility and plugins,
1166 // although they should work to migrate away.
1167
1168 var userAgent = navigator.userAgent.toLowerCase();
1169
1170 // Figure out what browser is being used
1171 jQuery.browser = {
1172         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
1173         safari: /webkit/.test( userAgent ),
1174         opera: /opera/.test( userAgent ),
1175         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1176         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1177 };
1178
1179 jQuery.each({
1180         parent: function(elem){return elem.parentNode;},
1181         parents: function(elem){return jQuery.dir(elem,"parentNode");},
1182         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
1183         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
1184         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
1185         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
1186         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
1187         children: function(elem){return jQuery.sibling(elem.firstChild);},
1188         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
1189 }, function(name, fn){
1190         jQuery.fn[ name ] = function( selector ) {
1191                 var ret = jQuery.map( this, fn );
1192
1193                 if ( selector && typeof selector == "string" )
1194                         ret = jQuery.multiFilter( selector, ret );
1195
1196                 return this.pushStack( jQuery.unique( ret ), name, selector );
1197         };
1198 });
1199
1200 jQuery.each({
1201         appendTo: "append",
1202         prependTo: "prepend",
1203         insertBefore: "before",
1204         insertAfter: "after",
1205         replaceAll: "replaceWith"
1206 }, function(name, original){
1207         jQuery.fn[ name ] = function( selector ) {
1208                 var ret = [], insert = jQuery( selector );
1209
1210                 for ( var i = 0, l = insert.length; i < l; i++ ) {
1211                         var elems = (i > 0 ? this.clone(true) : this).get();
1212                         jQuery.fn[ original ].apply( jQuery(insert[i]), elems );
1213                         ret = ret.concat( elems );
1214                 }
1215
1216                 return this.pushStack( ret, name, selector );
1217         };
1218 });
1219
1220 jQuery.each({
1221         removeAttr: function( name ) {
1222                 jQuery.attr( this, name, "" );
1223                 if (this.nodeType == 1)
1224                         this.removeAttribute( name );
1225         },
1226
1227         addClass: function( classNames ) {
1228                 jQuery.className.add( this, classNames );
1229         },
1230
1231         removeClass: function( classNames ) {
1232                 jQuery.className.remove( this, classNames );
1233         },
1234
1235         toggleClass: function( classNames, state ) {
1236                 if( typeof state !== "boolean" )
1237                         state = !jQuery.className.has( this, classNames );
1238                 jQuery.className[ state ? "add" : "remove" ]( this, classNames );
1239         },
1240
1241         remove: function( selector ) {
1242                 if ( !selector || jQuery.multiFilter( selector, [ this ] ).length ) {
1243                         if ( this.nodeType === 1 ) {
1244                                 cleanData( this.getElementsByTagName("*") );
1245                                 cleanData( [this] );
1246                         }
1247
1248                         if ( this.parentNode ) {
1249                                 this.parentNode.removeChild( this );
1250                         }
1251                 }
1252         },
1253
1254         empty: function() {
1255                 // Remove element nodes and prevent memory leaks
1256                 if ( this.nodeType === 1 ) {
1257                         cleanData( this.getElementsByTagName("*") );
1258                 }
1259
1260                 // Remove any remaining nodes
1261                 while ( this.firstChild ) {
1262                         this.removeChild( this.firstChild );
1263                 }
1264         }
1265 }, function(name, fn){
1266         jQuery.fn[ name ] = function(){
1267                 return this.each( fn, arguments );
1268         };
1269 });
1270
1271 function cleanData( elems ) {
1272         for ( var i = 0, l = elems.length; i < l; i++ ) {
1273                 var id = elems[i][expando];
1274                 if ( id ) {
1275                         delete jQuery.cache[ id ];
1276                 }
1277         }
1278 }
1279
1280 // Helper function used by the dimensions and offset modules
1281 function num(elem, prop) {
1282         return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
1283 }