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