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