src/core.js

   1 /*
   2  * jQuery @VERSION - New Wave Javascript
   3  *
   4  * Copyright (c) 2007 John Resig (jquery.com)
   5  * Dual licensed under the MIT (MIT-LICENSE.txt)
   6  * and GPL (GPL-LICENSE.txt) licenses.
   7  *
   8  * $Date$
   9  * $Rev$
  10  */
  11
  12 // Map over jQuery in case of overwrite
  13 if ( window.jQuery )
  14         var _jQuery = window.jQuery;
  15
  16 var jQuery = window.jQuery = function( selector, context ) {
  17         // If the context is a namespace object, return a new object
  18         return this instanceof jQuery ?
  19                 this.init( selector, context ) :
  20                 new jQuery( selector, context );
  21 };
  22
  23 // Map over the $ in case of overwrite
  24 if ( window.$ )
  25         var _$ = window.$;
  26
  27 // Map the jQuery namespace to the '$' one
  28 window.$ = jQuery;
  29
  30 // A simple way to check for HTML strings or ID strings
  31 // (both of which we optimize for)
  32 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;
  33
  34 jQuery.fn = jQuery.prototype = {
  35         init: function( selector, context ) {
  36                 // Make sure that a selection was provided
  37                 selector = selector || document;
  38
  39                 // Handle $(DOMElement)
  40                 if ( selector.nodeType ) {
  41                         this[0] = selector;
  42                         this.length = 1;
  43                         return this;
  44
  45                 // Handle HTML strings
  46                 } else if ( typeof selector  == "string" ) {
  47                         // Are we dealing with HTML string or an ID?
  48                         var match = quickExpr.exec( selector );
  49
  50                         // Verify a match, and that no context was specified for #id
  51                         if ( match && (match[1] || !context) ) {
  52
  53                                 // HANDLE: $(html) -> $(array)
  54                                 if ( match[1] )
  55                                         selector = jQuery.clean( [ match[1] ], context );
  56
  57                                 // HANDLE: $("#id")
  58                                 else {
  59                                         var elem = document.getElementById( match[3] );
  60
  61                                         // Make sure an element was located
  62                                         if ( elem )
  63                                                 // Handle the case where IE and Opera return items
  64                                                 // by name instead of ID
  65                                                 if ( elem.id != match[3] )
  66                                                         return jQuery().find( selector );
  67
  68                                                 // Otherwise, we inject the element directly into the jQuery object
  69                                                 else {
  70                                                         this[0] = elem;
  71                                                         this.length = 1;
  72                                                         return this;
  73                                                 }
  74
  75                                         else
  76                                                 selector = [];
  77                                 }
  78
  79                         // HANDLE: $(expr, [context])
  80                         // (which is just equivalent to: $(content).find(expr)
  81                         } else
  82                                 return new jQuery( context ).find( selector );
  83
  84                 // HANDLE: $(function)
  85                 // Shortcut for document ready
  86                 } else if ( jQuery.isFunction( selector ) )
  87                         return new jQuery( document )[ jQuery.fn.ready ? "ready" : "load" ]( selector );
  88
  89                 return this.setArray(
  90                         // HANDLE: $(array)
  91                         selector.constructor == Array && selector ||
  92
  93                         // HANDLE: $(arraylike)
  94                         // Watch for when an array-like object, contains DOM nodes, is passed in as the selector
  95                         (selector.jquery || selector.length && selector != window && !selector.nodeType && selector[0] != undefined && selector[0].nodeType) && jQuery.makeArray( selector ) ||
  96
  97                         // HANDLE: $(*)
  98                         [ selector ] );
  99         },
 100
 101         // The current version of jQuery being used
 102         jquery: "@VERSION",
 103
 104         // The number of elements contained in the matched element set
 105         size: function() {
 106                 return this.length;
 107         },
 108
 109         // The number of elements contained in the matched element set
 110         length: 0,
 111
 112         // Get the Nth element in the matched element set OR
 113         // Get the whole matched element set as a clean array
 114         get: function( num ) {
 115                 return num == undefined ?
 116
 117                         // Return a 'clean' array
 118                         jQuery.makeArray( this ) :
 119
 120                         // Return just the object
 121                         this[ num ];
 122         },
 123
 124         // Take an array of elements and push it onto the stack
 125         // (returning the new matched element set)
 126         pushStack: function( elems ) {
 127                 // Build a new jQuery matched element set
 128                 var ret = jQuery( elems );
 129
 130                 // Add the old object onto the stack (as a reference)
 131                 ret.prevObject = this;
 132
 133                 // Return the newly-formed element set
 134                 return ret;
 135         },
 136
 137         // Force the current matched set of elements to become
 138         // the specified array of elements (destroying the stack in the process)
 139         // You should use pushStack() in order to do this, but maintain the stack
 140         setArray: function( elems ) {
 141                 // Resetting the length to 0, then using the native Array push
 142                 // is a super-fast way to populate an object with array-like properties
 143                 this.length = 0;
 144                 Array.prototype.push.apply( this, elems );
 145
 146                 return this;
 147         },
 148
 149         // Execute a callback for every element in the matched set.
 150         // (You can seed the arguments with an array of args, but this is
 151         // only used internally.)
 152         each: function( callback, args ) {
 153                 return jQuery.each( this, callback, args );
 154         },
 155
 156         // Determine the position of an element within
 157         // the matched set of elements
 158         index: function( elem ) {
 159                 var ret = -1;
 160
 161                 // Locate the position of the desired element
 162                 this.each(function(i){
 163                         if ( this == elem )
 164                                 ret = i;
 165                 });
 166
 167                 return ret;
 168         },
 169
 170         attr: function( name, value, type ) {
 171                 var options = name;
 172
 173                 // Look for the case where we're accessing a style value
 174                 if ( name.constructor == String )
 175                         if ( value == undefined )
 176                                 return this.length && jQuery[ type || "attr" ]( this[0], name ) || undefined;
 177
 178                         else {
 179                                 options = {};
 180                                 options[ name ] = value;
 181                         }
 182
 183                 // Check to see if we're setting style values
 184                 return this.each(function(i){
 185                         // Set all the styles
 186                         for ( name in options )
 187                                 jQuery.attr(
 188                                         type ?
 189                                                 this.style :
 190                                                 this,
 191                                         name, jQuery.prop( this, options[ name ], type, i, name )
 192                                 );
 193                 });
 194         },
 195
 196         css: function( key, value ) {
 197                 return this.attr( key, value, "curCSS" );
 198         },
 199
 200         text: function( text ) {
 201                 if ( typeof text != "object" && text != null )
 202                         return this.empty().append( document.createTextNode( text ) );
 203
 204                 var ret = "";
 205
 206                 jQuery.each( text || this, function(){
 207                         jQuery.each( this.childNodes, function(){
 208                                 if ( this.nodeType != 8 )
 209                                         ret += this.nodeType != 1 ?
 210                                                 this.nodeValue :
 211                                                 jQuery.fn.text( [ this ] );
 212                         });
 213                 });
 214
 215                 return ret;
 216         },
 217
 218         wrapAll: function( html ) {
 219                 if ( this[0] )
 220                         // The elements to wrap the target around
 221                         jQuery( html, this[0].ownerDocument )
 222                                 .clone()
 223                                 .insertBefore( this[0] )
 224                                 .map(function(){
 225                                         var elem = this;
 226
 227                                         while ( elem.firstChild )
 228                                                 elem = elem.firstChild;
 229
 230                                         return elem;
 231                                 })
 232                                 .append(this);
 233
 234                 return this;
 235         },
 236
 237         wrapInner: function( html ) {
 238                 return this.each(function(){
 239                         jQuery( this ).contents().wrapAll( html );
 240                 });
 241         },
 242
 243         wrap: function( html ) {
 244                 return this.each(function(){
 245                         jQuery( this ).wrapAll( html );
 246                 });
 247         },
 248
 249         append: function() {
 250                 return this.domManip(arguments, true, false, function(elem){
 251                         this.appendChild( elem );
 252                 });
 253         },
 254
 255         prepend: function() {
 256                 return this.domManip(arguments, true, true, function(elem){
 257                         this.insertBefore( elem, this.firstChild );
 258                 });
 259         },
 260
 261         before: function() {
 262                 return this.domManip(arguments, false, false, function(elem){
 263                         this.parentNode.insertBefore( elem, this );
 264                 });
 265         },
 266
 267         after: function() {
 268                 return this.domManip(arguments, false, true, function(elem){
 269                         this.parentNode.insertBefore( elem, this.nextSibling );
 270                 });
 271         },
 272
 273         end: function() {
 274                 return this.prevObject || jQuery( [] );
 275         },
 276
 277         find: function( selector ) {
 278                 var elems = jQuery.map(this, function(elem){
 279                         return jQuery.find( selector, elem );
 280                 });
 281
 282                 return this.pushStack( /[^+>] [^+>]/.test( selector ) || selector.indexOf("..") > -1 ?
 283                         jQuery.unique( elems ) :
 284                         elems );
 285         },
 286
 287         clone: function( events ) {
 288                 // Do the clone
 289                 var ret = this.map(function(){
 290                         return this.outerHTML ?
 291                                 jQuery( this.outerHTML )[0] :
 292                                 this.cloneNode( true );
 293                 });
 294
 295                 // Need to set the expando to null on the cloned set if it exists
 296                 // removeData doesn't work here, IE removes it from the original as well
 297                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 298                 var clone = ret.find("*").andSelf().each(function(){
 299                         if ( this[ expando ] != undefined )
 300                                 this[ expando ] = null;
 301                 });
 302
 303                 // Copy the events from the original to the clone
 304                 if ( events === true )
 305                         this.find("*").andSelf().each(function(i){
 306                                 var events = jQuery.data( this, "events" );
 307
 308                                 for ( var type in events )
 309                                         for ( var handler in events[ type ] )
 310                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 311                         });
 312
 313                 // Return the cloned set
 314                 return ret;
 315         },
 316
 317         filter: function( selector ) {
 318                 return this.pushStack(
 319                         jQuery.isFunction( selector ) &&
 320                         jQuery.grep(this, function(elem, i){
 321                                 return selector.call( elem, i );
 322                         }) ||
 323
 324                         jQuery.multiFilter( selector, this ) );
 325         },
 326
 327         not: function( selector ) {
 328                 return this.pushStack(
 329                         selector.constructor == String &&
 330                         jQuery.multiFilter( selector, this, true ) ||
 331
 332                         jQuery.grep(this, function(elem) {
 333                                 return selector.constructor == Array || selector.jquery ?
 334                                         jQuery.inArray( elem, selector ) < 0 :
 335                                         elem != selector;
 336                         }) );
 337         },
 338
 339         add: function( selector ) {
 340                 return this.pushStack( jQuery.merge(
 341                         this.get(),
 342                         selector.constructor == String ?
 343                                 jQuery( selector ).get() :
 344                                 selector.length != undefined && (!selector.nodeName || jQuery.nodeName(selector, "form")) ?
 345                                         selector : [selector] ) );
 346         },
 347
 348         is: function( selector ) {
 349                 return selector ?
 350                         jQuery.multiFilter( selector, this ).length > 0 :
 351                         false;
 352         },
 353
 354         hasClass: function( selector ) {
 355                 return this.is( "." + selector );
 356         },
 357
 358         val: function( value ) {
 359                 if ( value == undefined ) {
 360
 361                         if ( this.length ) {
 362                                 var elem = this[0];
 363
 364                                 // We need to handle select boxes special
 365                                 if ( jQuery.nodeName( elem, "select" ) ) {
 366                                         var index = elem.selectedIndex,
 367                                                 values = [],
 368                                                 options = elem.options,
 369                                                 one = elem.type == "select-one";
 370
 371                                         // Nothing was selected
 372                                         if ( index < 0 )
 373                                                 return null;
 374
 375                                         // Loop through all the selected options
 376                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 377                                                 var option = options[ i ];
 378
 379                                                 if ( option.selected ) {
 380                                                         // Get the specifc value for the option
 381                                                         value = jQuery.browser.msie && !option.attributes.value.specified ? option.text : option.value;
 382
 383                                                         // We don't need an array for one selects
 384                                                         if ( one )
 385                                                                 return value;
 386
 387                                                         // Multi-Selects return an array
 388                                                         values.push( value );
 389                                                 }
 390                                         }
 391
 392                                         return values;
 393
 394                                 // Everything else, we just grab the value
 395                                 } else
 396                                         return this[0].value.replace(/\r/g, "");
 397
 398                         }
 399
 400                 } else
 401                         return this.each(function(){
 402                                 if ( value.constructor == Array && /radio|checkbox/.test( this.type ) )
 403                                         this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 404                                                 jQuery.inArray(this.name, value) >= 0);
 405
 406                                 else if ( jQuery.nodeName( this, "select" ) ) {
 407                                         var values = value.constructor == Array ?
 408                                                 value :
 409                                                 [ value ];
 410
 411                                         jQuery( "option", this ).each(function(){
 412                                                 this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 413                                                         jQuery.inArray( this.text, values ) >= 0);
 414                                         });
 415
 416                                         if ( !values.length )
 417                                                 this.selectedIndex = -1;
 418
 419                                 } else
 420                                         this.value = value;
 421                         });
 422         },
 423
 424         html: function( value ) {
 425                 return value == undefined ?
 426                         (this.length ?
 427                                 this[0].innerHTML :
 428                                 null) :
 429                         this.empty().append( value );
 430         },
 431
 432         replaceWith: function( value ) {
 433                 return this.after( value ).remove();
 434         },
 435
 436         eq: function( i ) {
 437                 return this.slice( i, i + 1 );
 438         },
 439
 440         slice: function() {
 441                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 442         },
 443
 444         map: function( callback ) {
 445                 return this.pushStack( jQuery.map(this, function(elem, i){
 446                         return callback.call( elem, i, elem );
 447                 }));
 448         },
 449
 450         andSelf: function() {
 451                 return this.add( this.prevObject );
 452         },
 453
 454         domManip: function( args, table, reverse, callback ) {
 455                 var clone = this.length > 1, elems;
 456
 457                 return this.each(function(){
 458                         if ( !elems ) {
 459                                 elems = jQuery.clean( args, this.ownerDocument );
 460
 461                                 if ( reverse )
 462                                         elems.reverse();
 463                         }
 464
 465                         var obj = this;
 466
 467                         if ( table && jQuery.nodeName( this, "table" ) && jQuery.nodeName( elems[0], "tr" ) )
 468                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild( document.createElement("tbody") );
 469
 470                         var scripts = jQuery( [] );
 471
 472                         jQuery.each(elems, function(){
 473                                 var elem = clone ?
 474                                         this.cloneNode( true ) :
 475                                         this;
 476
 477                                 if ( jQuery.nodeName( elem, "script" ) ) {
 478
 479                                         // If scripts are waiting to be executed, wait on this script as well
 480                                         if ( scripts.length )
 481                                                 scripts = scripts.add( elem );
 482
 483                                         // If nothing is waiting to be executed, run immediately
 484                                         else
 485                                                 evalScript( 0, elem );
 486
 487                                 } else {
 488                                         // Remove any inner scripts for later evaluation
 489                                         if ( elem.nodeType == 1 )
 490                                                 scripts = scripts.add( jQuery( "script", elem ).remove() );
 491
 492                                         // Inject the elements into the document
 493                                         callback.call( obj, elem );
 494                                 }
 495                         });
 496
 497                         scripts.each( evalScript );
 498                 });
 499         }
 500 };
 501
 502 function evalScript( i, elem ) {
 503         if ( elem.src )
 504                 jQuery.ajax({
 505                         url: elem.src,
 506                         async: false,
 507                         dataType: "script"
 508                 });
 509
 510         else
 511                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 512
 513         if ( elem.parentNode )
 514                 elem.parentNode.removeChild( elem );
 515 }
 516
 517 jQuery.extend = jQuery.fn.extend = function() {
 518         // copy reference to target object
 519         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 520
 521         // Handle a deep copy situation
 522         if ( target.constructor == Boolean ) {
 523                 deep = target;
 524                 target = arguments[1] || {};
 525                 // skip the boolean and the target
 526                 i = 2;
 527         }
 528
 529         // Handle case when target is a string or something (possible in deep copy)
 530         if ( typeof target != "object" )
 531                 target = {};
 532
 533         // extend jQuery itself if only one argument is passed
 534         if ( length == 1 ) {
 535                 target = this;
 536                 i = 0;
 537         }
 538
 539         for ( ; i < length; i++ )
 540                 // Only deal with non-null/undefined values
 541                 if ( (options = arguments[ i ]) != null )
 542                         // Extend the base object
 543                         for ( var name in options ) {
 544                                 // Prevent never-ending loop
 545                                 if ( target === options[ name ] )
 546                                         continue;
 547
 548                                 // Recurse if we're merging object values
 549                                 if ( deep && typeof options[ name ] == "object" && target[ name ] && !options[ name ].nodeType )
 550                                         target[ name ] = jQuery.extend( target[ name ], options[ name ] );
 551
 552                                 // Don't bring in undefined values
 553                                 else if ( options[ name ] != undefined )
 554                                         target[ name ] = options[ name ];
 555
 556                         }
 557
 558         // Return the modified object
 559         return target;
 560 };
 561
 562 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, windowData = {};
 563
 564 // exclude the following css properties to add px
 565 var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 566
 567 jQuery.extend({
 568         noConflict: function( deep ) {
 569                 window.$ = _$;
 570
 571                 if ( deep )
 572                         window.jQuery = _jQuery;
 573
 574                 return jQuery;
 575         },
 576
 577         // This may seem like some crazy code, but trust me when I say that this
 578         // is the only cross-browser way to do this. --John
 579         isFunction: function( fn ) {
 580                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 581                         fn.constructor != Array && /function/i.test( fn + "" );
 582         },
 583
 584         // check if an element is in a (or is an) XML document
 585         isXMLDoc: function( elem ) {
 586                 return elem.documentElement && !elem.body ||
 587                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 588         },
 589
 590         // Evalulates a script in a global context
 591         // Evaluates Async. in Safari 2 :-(
 592         globalEval: function( data ) {
 593                 data = jQuery.trim( data );
 594
 595                 if ( data ) {
 596                         // Inspired by code by Andrea Giammarchi
 597                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 598                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 599                                 script = document.createElement("script");
 600
 601                         script.type = "text/javascript";
 602                         if ( jQuery.browser.msie )
 603                                 script.text = data;
 604                         else
 605                                 script.appendChild( document.createTextNode( data ) );
 606
 607                         head.appendChild( script );
 608                         head.removeChild( script );
 609                 }
 610         },
 611
 612         nodeName: function( elem, name ) {
 613                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 614         },
 615
 616         cache: {},
 617
 618         data: function( elem, name, data ) {
 619                 elem = elem == window ?
 620                         windowData :
 621                         elem;
 622
 623                 var id = elem[ expando ];
 624
 625                 // Compute a unique ID for the element
 626                 if ( !id )
 627                         id = elem[ expando ] = ++uuid;
 628
 629                 // Only generate the data cache if we're
 630                 // trying to access or manipulate it
 631                 if ( name && !jQuery.cache[ id ] )
 632                         jQuery.cache[ id ] = {};
 633
 634                 // Prevent overriding the named cache with undefined values
 635                 if ( data != undefined )
 636                         jQuery.cache[ id ][ name ] = data;
 637
 638                 // Return the named cache data, or the ID for the element
 639                 return name ?
 640                         jQuery.cache[ id ][ name ] :
 641                         id;
 642         },
 643
 644         removeData: function( elem, name ) {
 645                 elem = elem == window ?
 646                         windowData :
 647                         elem;
 648
 649                 var id = elem[ expando ];
 650
 651                 // If we want to remove a specific section of the element's data
 652                 if ( name ) {
 653                         if ( jQuery.cache[ id ] ) {
 654                                 // Remove the section of cache data
 655                                 delete jQuery.cache[ id ][ name ];
 656
 657                                 // If we've removed all the data, remove the element's cache
 658                                 name = "";
 659
 660                                 for ( name in jQuery.cache[ id ] )
 661                                         break;
 662
 663                                 if ( !name )
 664                                         jQuery.removeData( elem );
 665                         }
 666
 667                 // Otherwise, we want to remove all of the element's data
 668                 } else {
 669                         // Clean up the element expando
 670                         try {
 671                                 delete elem[ expando ];
 672                         } catch(e){
 673                                 // IE has trouble directly removing the expando
 674                                 // but it's ok with using removeAttribute
 675                                 if ( elem.removeAttribute )
 676                                         elem.removeAttribute( expando );
 677                         }
 678
 679                         // Completely remove the data cache
 680                         delete jQuery.cache[ id ];
 681                 }
 682         },
 683
 684         // args is for internal usage only
 685         each: function( object, callback, args ) {
 686                 if ( args ) {
 687                         if ( object.length == undefined )
 688                                 for ( var name in object )
 689                                         callback.apply( object[ name ], args );
 690                         else
 691                                 for ( var i = 0, length = object.length; i < length; i++ )
 692                                         if ( callback.apply( object[ i ], args ) === false )
 693                                                 break;
 694
 695                 // A special, fast, case for the most common use of each
 696                 } else {
 697                         if ( object.length == undefined )
 698                                 for ( var name in object )
 699                                         callback.call( object[ name ], name, object[ name ] );
 700                         else
 701                                 for ( var i = 0, length = object.length, value = object[0];
 702                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 703                 }
 704
 705                 return object;
 706         },
 707
 708         prop: function( elem, value, type, i, name ) {
 709                         // Handle executable functions
 710                         if ( jQuery.isFunction( value ) )
 711                                 value = value.call( elem, i );
 712
 713                         // Handle passing in a number to a CSS property
 714                         return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 715                                 value + "px" :
 716                                 value;
 717         },
 718
 719         className: {
 720                 // internal only, use addClass("class")
 721                 add: function( elem, classNames ) {
 722                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 723                                 if ( !jQuery.className.has( elem.className, className ) )
 724                                         elem.className += (elem.className ? " " : "") + className;
 725                         });
 726                 },
 727
 728                 // internal only, use removeClass("class")
 729                 remove: function( elem, classNames ) {
 730                         elem.className = classNames != undefined ?
 731                                 jQuery.grep(elem.className.split(/\s+/), function(className){
 732                                         return !jQuery.className.has( classNames, className );
 733                                 }).join(" ") :
 734                                 "";
 735                 },
 736
 737                 // internal only, use is(".class")
 738                 has: function( elem, className ) {
 739                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 740                 }
 741         },
 742
 743         // A method for quickly swapping in/out CSS properties to get correct calculations
 744         swap: function( elem, options, callback ) {
 745                 // Remember the old values, and insert the new ones
 746                 for ( var name in options ) {
 747                         elem.style[ "old" + name ] = elem.style[ name ];
 748                         elem.style[ name ] = options[ name ];
 749                 }
 750
 751                 callback.call( elem );
 752
 753                 // Revert the old values
 754                 for ( var name in options )
 755                         elem.style[ name ] = elem.style[ "old" + name ];
 756         },
 757
 758         css: function( elem, name, force ) {
 759                 if ( name == "height" || name == "width" ) {
 760                         var old = {}, height, width;
 761
 762                         // Revert the padding and border widths to get the
 763                         // correct height/width values
 764                         jQuery.each([ "Top", "Bottom", "Right", "Left" ], function(){
 765                                 old[ "padding" + this ] = 0;
 766                                 old[ "border" + this + "Width" ] = 0;
 767                         });
 768
 769                         // Swap out the padding/border values temporarily
 770                         jQuery.swap( elem, old, function() {
 771
 772                                 // If the element is visible, then the calculation is easy
 773                                 if ( jQuery( elem ).is(":visible") ) {
 774                                         height = elem.offsetHeight;
 775                                         width = elem.offsetWidth;
 776
 777                                 // Otherwise, we need to flip out more values
 778                                 } else {
 779                                         elem = jQuery( elem.cloneNode(true) )
 780                                                 .find(":radio").removeAttr("checked").removeAttr("defaultChecked").end()
 781                                                 .css({
 782                                                         visibility: "hidden",
 783                                                         position: "absolute",
 784                                                         display: "block",
 785                                                         right: "0",
 786                                                         left: "0"
 787                                                 }).appendTo( elem.parentNode )[0];
 788
 789                                         var position = jQuery.css( elem.parentNode, "position" ) || "static";
 790                                         if ( position == "static" )
 791                                                 elem.parentNode.style.position = "relative";
 792
 793                                         height = elem.clientHeight;
 794                                         width = elem.clientWidth;
 795
 796                                         if ( position == "static" )
 797                                                 elem.parentNode.style.position = "static";
 798
 799                                         elem.parentNode.removeChild( elem );
 800                                 }
 801                         });
 802
 803                         return name == "height" ?
 804                                 height :
 805                                 width;
 806                 }
 807
 808                 return jQuery.curCSS( elem, name, force );
 809         },
 810
 811         curCSS: function( elem, name, force ) {
 812                 var ret;
 813
 814                 // A helper method for determining if an element's values are broken
 815                 function color( elem ) {
 816                         if ( !jQuery.browser.safari )
 817                                 return false;
 818
 819                         var ret = document.defaultView.getComputedStyle( elem, null );
 820                         return !ret || ret.getPropertyValue("color") == "";
 821                 }
 822
 823                 // We need to handle opacity special in IE
 824                 if ( name == "opacity" && jQuery.browser.msie ) {
 825                         ret = jQuery.attr( elem.style, "opacity" );
 826
 827                         return ret == "" ?
 828                                 "1" :
 829                                 ret;
 830                 }
 831
 832                 // Make sure we're using the right name for getting the float value
 833                 if ( name.match( /float/i ) )
 834                         name = styleFloat;
 835
 836                 if ( !force && elem.style[ name ] )
 837                         ret = elem.style[ name ];
 838
 839                 else if ( document.defaultView && document.defaultView.getComputedStyle ) {
 840
 841                         // Only "float" is needed here
 842                         if ( name.match( /float/i ) )
 843                                 name = "float";
 844
 845                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 846
 847                         var getComputedStyle = document.defaultView.getComputedStyle( elem, null );
 848
 849                         if ( getComputedStyle && !color( elem ) )
 850                                 ret = getComputedStyle.getPropertyValue( name );
 851
 852                         // If the element isn't reporting its values properly in Safari
 853                         // then some display: none elements are involved
 854                         else {
 855                                 var swap = [], stack = [];
 856
 857                                 // Locate all of the parent display: none elements
 858                                 for ( var a = elem; a && color(a); a = a.parentNode )
 859                                         stack.unshift(a);
 860
 861                                 // Go through and make them visible, but in reverse
 862                                 // (It would be better if we knew the exact display type that they had)
 863                                 for ( var i = 0; i < stack.length; i++ )
 864                                         if ( color( stack[ i ] ) ) {
 865                                                 swap[ i ] = stack[ i ].style.display;
 866                                                 stack[ i ].style.display = "block";
 867                                         }
 868
 869                                 // Since we flip the display style, we have to handle that
 870                                 // one special, otherwise get the value
 871                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 872                                         "none" :
 873                                         ( getComputedStyle && getComputedStyle.getPropertyValue( name ) ) || "";
 874
 875                                 // Finally, revert the display styles back
 876                                 for ( var i = 0; i < swap.length; i++ )
 877                                         if ( swap[ i ] != null )
 878                                                 stack[ i ].style.display = swap[ i ];
 879                         }
 880
 881                         // We should always get a number back from opacity
 882                         if ( name == "opacity" && ret == "" )
 883                                 ret = "1";
 884
 885                 } else if ( elem.currentStyle ) {
 886                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 887                                 return letter.toUpperCase();
 888                         });
 889
 890                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 891
 892                         // From the awesome hack by Dean Edwards
 893                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 894
 895                         // If we're not dealing with a regular pixel number
 896                         // but a number that has a weird ending, we need to convert it to pixels
 897                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 898                                 // Remember the original values
 899                                 var style = elem.style.left, runtimeStyle = elem.runtimeStyle.left;
 900
 901                                 // Put in the new values to get a computed value out
 902                                 elem.runtimeStyle.left = elem.currentStyle.left;
 903                                 elem.style.left = ret || 0;
 904                                 ret = elem.style.pixelLeft + "px";
 905
 906                                 // Revert the changed values
 907                                 elem.style.left = style;
 908                                 elem.runtimeStyle.left = runtimeStyle;
 909                         }
 910                 }
 911
 912                 return ret;
 913         },
 914
 915         clean: function( elems, context ) {
 916                 var ret = [];
 917                 context = context || document;
 918
 919                 jQuery.each(elems, function(i, elem){
 920                         if ( !elem )
 921                                 return;
 922
 923                         if ( elem.constructor == Number )
 924                                 elem = elem.toString();
 925
 926                         // Convert html string into DOM nodes
 927                         if ( typeof elem == "string" ) {
 928                                 // Fix "XHTML"-style tags in all browsers
 929                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 930                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i) ?
 931                                                 all :
 932                                                 front + "></" + tag + ">";
 933                                 });
 934
 935                                 // Trim whitespace, otherwise indexOf won't work as expected
 936                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 937
 938                                 var wrap =
 939                                         // option or optgroup
 940                                         !tags.indexOf("<opt") &&
 941                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 942
 943                                         !tags.indexOf("<leg") &&
 944                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 945
 946                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 947                                         [ 1, "<table>", "</table>" ] ||
 948
 949                                         !tags.indexOf("<tr") &&
 950                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 951
 952                                         // <thead> matched above
 953                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 954                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 955
 956                                         !tags.indexOf("<col") &&
 957                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 958
 959                                         // IE can't serialize <link> and <script> tags normally
 960                                         jQuery.browser.msie &&
 961                                         [ 1, "div<div>", "</div>" ] ||
 962
 963                                         [ 0, "", "" ];
 964
 965                                 // Go to html and back, then peel off extra wrappers
 966                                 div.innerHTML = wrap[1] + elem + wrap[2];
 967
 968                                 // Move to the right depth
 969                                 while ( wrap[0]-- )
 970                                         div = div.lastChild;
 971
 972                                 // Remove IE's autoinserted <tbody> from table fragments
 973                                 if ( jQuery.browser.msie ) {
 974
 975                                         // String was a <table>, *may* have spurious <tbody>
 976                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
 977                                                 div.firstChild && div.firstChild.childNodes :
 978
 979                                                 // String was a bare <thead> or <tfoot>
 980                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
 981                                                         div.childNodes :
 982                                                         [];
 983
 984                                         for ( var i = tbody.length - 1; i >= 0 ; --i )
 985                                                 if ( jQuery.nodeName( tbody[ i ], "tbody" ) && !tbody[ i ].childNodes.length )
 986                                                         tbody[ i ].parentNode.removeChild( tbody[ i ] );
 987
 988                                         // IE completely kills leading whitespace when innerHTML is used
 989                                         if ( /^\s/.test( elem ) )
 990                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
 991
 992                                 }
 993
 994                                 elem = jQuery.makeArray( div.childNodes );
 995                         }
 996
 997                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
 998                                 return;
 999
1000                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
1001                                 ret.push( elem );
1002
1003                         else
1004                                 ret = jQuery.merge( ret, elem );
1005
1006                 });
1007
1008                 return ret;
1009         },
1010
1011         attr: function( elem, name, value ) {
1012                 var fix = jQuery.isXMLDoc( elem ) ?
1013                         {} :
1014                         jQuery.props;
1015
1016                 // Safari mis-reports the default selected property of a hidden option
1017                 // Accessing the parent's selectedIndex property fixes it
1018                 if ( name == "selected" && jQuery.browser.safari )
1019                         elem.parentNode.selectedIndex;
1020
1021                 // Certain attributes only work when accessed via the old DOM 0 way
1022                 if ( fix[ name ] ) {
1023                         if ( value != undefined )
1024                                 elem[ fix[ name ] ] = value;
1025
1026                         return elem[ fix[ name ] ];
1027
1028                 } else if ( jQuery.browser.msie && name == "style" )
1029                         return jQuery.attr( elem.style, "cssText", value );
1030
1031                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName( elem, "form" ) && (name == "action" || name == "method") )
1032                         return elem.getAttributeNode( name ).nodeValue;
1033
1034                 // IE elem.getAttribute passes even for style
1035                 else if ( elem.tagName ) {
1036
1037                         if ( value != undefined ) {
1038                                 // We can't allow the type property to be changed (since it causes problems in IE)
1039                                 if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1040                                         throw "type property can't be changed";
1041
1042                                 elem.setAttribute( name, value );
1043                         }
1044
1045                         if ( jQuery.browser.msie && /href|src/.test( name ) && !jQuery.isXMLDoc( elem ) )
1046                                 return elem.getAttribute( name, 2 );
1047
1048                         return elem.getAttribute( name );
1049
1050                 // elem is actually elem.style ... set the style
1051                 } else {
1052                         // IE actually uses filters for opacity
1053                         if ( name == "opacity" && jQuery.browser.msie ) {
1054                                 if ( value != undefined ) {
1055                                         // IE has trouble with opacity if it does not have layout
1056                                         // Force it by setting the zoom level
1057                                         elem.zoom = 1;
1058
1059                                         // Set the alpha filter to set the opacity
1060                                         elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1061                                                 (parseFloat( value ).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1062                                 }
1063
1064                                 return elem.filter ?
1065                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() :
1066                                         "";
1067                         }
1068
1069                         name = name.replace(/-([a-z])/ig, function(all, letter){
1070                                 return letter.toUpperCase();
1071                         });
1072
1073                         if ( value != undefined )
1074                                 elem[ name ] = value;
1075
1076                         return elem[ name ];
1077                 }
1078         },
1079
1080         trim: function( text ) {
1081                 return (text || "").replace( /^\s+|\s+$/g, "" );
1082         },
1083
1084         makeArray: function( array ) {
1085                 var ret = [];
1086
1087                 // Need to use typeof to fight Safari childNodes crashes
1088                 if ( typeof array != "array" )
1089                         for ( var i = 0, length = array.length; i < length; i++ )
1090                                 ret.push( array[ i ] );
1091                 else
1092                         ret = array.slice( 0 );
1093
1094                 return ret;
1095         },
1096
1097         inArray: function( elem, array ) {
1098                 for ( var i = 0, length = array.length; i < length; i++ )
1099                         if ( array[ i ] == elem )
1100                                 return i;
1101
1102                 return -1;
1103         },
1104
1105         merge: function( first, second ) {
1106                 // We have to loop this way because IE & Opera overwrite the length
1107                 // expando of getElementsByTagName
1108
1109                 // Also, we need to make sure that the correct elements are being returned
1110                 // (IE returns comment nodes in a '*' query)
1111                 if ( jQuery.browser.msie ) {
1112                         for ( var i = 0; second[ i ]; i++ )
1113                                 if ( second[ i ].nodeType != 8 )
1114                                         first.push( second[ i ] );
1115
1116                 } else
1117                         for ( var i = 0; second[ i ]; i++ )
1118                                 first.push( second[ i ] );
1119
1120                 return first;
1121         },
1122
1123         unique: function( array ) {
1124                 var ret = [], done = {};
1125
1126                 try {
1127
1128                         for ( var i = 0, length = array.length; i < length; i++ ) {
1129                                 var id = jQuery.data( array[ i ] );
1130
1131                                 if ( !done[ id ] ) {
1132                                         done[ id ] = true;
1133                                         ret.push( array[ i ] );
1134                                 }
1135                         }
1136
1137                 } catch( e ) {
1138                         ret = array;
1139                 }
1140
1141                 return ret;
1142         },
1143
1144         grep: function( elems, callback, inv ) {
1145                 // If a string is passed in for the function, make a function
1146                 // for it (a handy shortcut)
1147                 if ( typeof callback == "string" )
1148                         callback = eval("false||function(a,i){return " + callback + "}");
1149
1150                 var ret = [];
1151
1152                 // Go through the array, only saving the items
1153                 // that pass the validator function
1154                 for ( var i = 0, length = elems.length; i < length; i++ )
1155                         if ( !inv && callback( elems[ i ], i ) || inv && !callback( elems[ i ], i ) )
1156                                 ret.push( elems[ i ] );
1157
1158                 return ret;
1159         },
1160
1161         map: function( elems, callback ) {
1162                 var ret = [];
1163
1164                 // Go through the array, translating each of the items to their
1165                 // new value (or values).
1166                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1167                         var value = callback( elems[ i ], i );
1168
1169                         if ( value !== null && value != undefined ) {
1170                                 if ( value.constructor != Array )
1171                                         value = [ value ];
1172
1173                                 ret = ret.concat( value );
1174                         }
1175                 }
1176
1177                 return ret;
1178         }
1179 });
1180
1181 var userAgent = navigator.userAgent.toLowerCase();
1182
1183 // Figure out what browser is being used
1184 jQuery.browser = {
1185         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1],
1186         safari: /webkit/.test( userAgent ),
1187         opera: /opera/.test( userAgent ),
1188         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1189         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1190 };
1191
1192 var styleFloat = jQuery.browser.msie ?
1193         "styleFloat" :
1194         "cssFloat";
1195
1196 jQuery.extend({
1197         // Check to see if the W3C box model is being used
1198         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1199
1200         props: {
1201                 "for": "htmlFor",
1202                 "class": "className",
1203                 "float": styleFloat,
1204                 cssFloat: styleFloat,
1205                 styleFloat: styleFloat,
1206                 innerHTML: "innerHTML",
1207                 className: "className",
1208                 value: "value",
1209                 disabled: "disabled",
1210                 checked: "checked",
1211                 readonly: "readOnly",
1212                 selected: "selected",
1213                 maxlength: "maxLength",
1214                 selectedIndex: "selectedIndex",
1215                 defaultValue: "defaultValue",
1216                 tagName: "tagName",
1217                 nodeName: "nodeName"
1218         }
1219 });
1220
1221 jQuery.each({
1222         parent: "elem.parentNode",
1223         parents: "jQuery.dir(elem,'parentNode')",
1224         next: "jQuery.nth(elem,2,'nextSibling')",
1225         prev: "jQuery.nth(elem,2,'previousSibling')",
1226         nextAll: "jQuery.dir(elem,'nextSibling')",
1227         prevAll: "jQuery.dir(elem,'previousSibling')",
1228         siblings: "jQuery.sibling(elem.parentNode.firstChild,elem)",
1229         children: "jQuery.sibling(elem.firstChild)",
1230         contents: "jQuery.nodeName(elem,'iframe')?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes)"
1231 }, function(name, fn){
1232         fn = eval("false||function(elem){return " + fn + "}");
1233
1234         jQuery.fn[ name ] = function( selector ) {
1235                 var ret = jQuery.map( this, fn );
1236
1237                 if ( selector && typeof selector == "string" )
1238                         ret = jQuery.multiFilter( selector, ret );
1239
1240                 return this.pushStack( jQuery.unique( ret ) );
1241         };
1242 });
1243
1244 jQuery.each({
1245         appendTo: "append",
1246         prependTo: "prepend",
1247         insertBefore: "before",
1248         insertAfter: "after",
1249         replaceAll: "replaceWith"
1250 }, function(name, original){
1251         jQuery.fn[ name ] = function() {
1252                 var args = arguments;
1253
1254                 return this.each(function(){
1255                         for ( var i = 0, length = args.length; i < length; i++ )
1256                                 jQuery( args[ i ] )[ original ]( this );
1257                 });
1258         };
1259 });
1260
1261 jQuery.each({
1262         removeAttr: function( name ) {
1263                 jQuery.attr( this, name, "" );
1264                 this.removeAttribute( name );
1265         },
1266
1267         addClass: function( classNames ) {
1268                 jQuery.className.add( this, classNames );
1269         },
1270
1271         removeClass: function( classNames ) {
1272                 jQuery.className.remove( this, classNames );
1273         },
1274
1275         toggleClass: function( classNames ) {
1276                 jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
1277         },
1278
1279         remove: function( selector ) {
1280                 if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
1281                         // Prevent memory leaks
1282                         jQuery( "*", this ).add(this).each(function(){
1283                                 jQuery.event.remove(this);
1284                                 jQuery.removeData(this);
1285                         });
1286                         if (this.parentNode)
1287                                 this.parentNode.removeChild( this );
1288                 }
1289         },
1290
1291         empty: function() {
1292                 // Remove element nodes and prevent memory leaks
1293                 jQuery( ">*", this ).remove();
1294
1295                 // Remove any remaining nodes
1296                 while ( this.firstChild )
1297                         this.removeChild( this.firstChild );
1298         }
1299 }, function(name, fn){
1300         jQuery.fn[ name ] = function(){
1301                 return this.each( fn, arguments );
1302         };
1303 });
1304
1305 jQuery.each([ "Height", "Width" ], function(i, name){
1306         var type = name.toLowerCase();
1307
1308         jQuery.fn[ type ] = function( size ) {
1309                 // Get window width or height
1310                 return this[0] == window ?
1311                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1312                         jQuery.browser.opera && document.body[ "client" + name ] ||
1313
1314                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1315                         jQuery.browser.safari && window[ "inner" + name ] ||
1316
1317                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1318                         document.compatMode == "CSS1Compat" && document.documentElement[ "client" + name ] || document.body[ "client" + name ] :
1319
1320                         // Get document width or height
1321                         this[0] == document ?
1322                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater (Mozilla reports scrollWidth the same as offsetWidth)
1323                                 Math.max( document.body[ "scroll" + name ], document.body[ "offset" + name ] ) :
1324
1325                                 // Get or set width or height on the element
1326                                 size == undefined ?
1327                                         // Get width or height on the element
1328                                         (this.length ? jQuery.css( this[0], type ) : null) :
1329
1330                                         // Set the width or height on the element (default to pixels if value is unitless)
1331                                         this.css( type, size.constructor == String ? size : size + "px" );
1332         };
1333 });