src/core.js

   1 /*
   2  * jQuery @VERSION - New Wave Javascript
   3  *
   4  * Copyright (c) 2008 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 var _jQuery = window.jQuery,
  14 // Map over the $ in case of overwrite
  15         _$ = window.$;
  16
  17 var jQuery = window.jQuery = window.$ = function( selector, context ) {
  18         // The jQuery object is actually just the init constructor 'enhanced'
  19         return new jQuery.fn.init( selector, context );
  20 };
  21
  22 // A simple way to check for HTML strings or ID strings
  23 // (both of which we optimize for)
  24 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
  25
  26 // Is it a simple selector
  27         isSimple = /^.[^:#\[\.]*$/,
  28
  29 // Will speed up references to undefined, and allows munging its name.
  30         undefined;
  31
  32 jQuery.fn = jQuery.prototype = {
  33         init: function( selector, context ) {
  34                 // Make sure that a selection was provided
  35                 selector = selector || document;
  36
  37                 // Handle $(DOMElement)
  38                 if ( selector.nodeType ) {
  39                         this[0] = selector;
  40                         this.length = 1;
  41                         return this;
  42                 }
  43                 // Handle HTML strings
  44                 if ( typeof selector == "string" ) {
  45                         // Are we dealing with HTML string or an ID?
  46                         var match = quickExpr.exec( selector );
  47
  48                         // Verify a match, and that no context was specified for #id
  49                         if ( match && (match[1] || !context) ) {
  50
  51                                 // HANDLE: $(html) -> $(array)
  52                                 if ( match[1] )
  53                                         selector = jQuery.clean( [ match[1] ], context );
  54
  55                                 // HANDLE: $("#id")
  56                                 else {
  57                                         var elem = document.getElementById( match[3] );
  58
  59                                         // Make sure an element was located
  60                                         if ( elem ){
  61                                                 // Handle the case where IE and Opera return items
  62                                                 // by name instead of ID
  63                                                 if ( elem.id != match[3] )
  64                                                         return jQuery().find( selector );
  65
  66                                                 // Otherwise, we inject the element directly into the jQuery object
  67                                                 return jQuery( elem );
  68                                         }
  69                                         selector = [];
  70                                 }
  71
  72                         // HANDLE: $(expr, [context])
  73                         // (which is just equivalent to: $(content).find(expr)
  74                         } else
  75                                 return jQuery( context ).find( selector );
  76
  77                 // HANDLE: $(function)
  78                 // Shortcut for document ready
  79                 } else if ( jQuery.isFunction( selector ) )
  80                         return jQuery( document )[ jQuery.fn.ready ? "ready" : "load" ]( selector );
  81
  82                 return this.setArray(jQuery.makeArray(selector));
  83         },
  84
  85         // The current version of jQuery being used
  86         jquery: "@VERSION",
  87
  88         // The number of elements contained in the matched element set
  89         size: function() {
  90                 return this.length;
  91         },
  92
  93         // Get the Nth element in the matched element set OR
  94         // Get the whole matched element set as a clean array
  95         get: function( num ) {
  96                 return num == undefined ?
  97
  98                         // Return a 'clean' array
  99                         jQuery.makeArray( this ) :
 100
 101                         // Return just the object
 102                         this[ num ];
 103         },
 104
 105         // Take an array of elements and push it onto the stack
 106         // (returning the new matched element set)
 107         pushStack: function( elems ) {
 108                 // Build a new jQuery matched element set
 109                 var ret = jQuery( elems );
 110
 111                 // Add the old object onto the stack (as a reference)
 112                 ret.prevObject = this;
 113
 114                 // Return the newly-formed element set
 115                 return ret;
 116         },
 117
 118         // Force the current matched set of elements to become
 119         // the specified array of elements (destroying the stack in the process)
 120         // You should use pushStack() in order to do this, but maintain the stack
 121         setArray: function( elems ) {
 122                 // Resetting the length to 0, then using the native Array push
 123                 // is a super-fast way to populate an object with array-like properties
 124                 this.length = 0;
 125                 Array.prototype.push.apply( this, elems );
 126
 127                 return this;
 128         },
 129
 130         // Execute a callback for every element in the matched set.
 131         // (You can seed the arguments with an array of args, but this is
 132         // only used internally.)
 133         each: function( callback, args ) {
 134                 return jQuery.each( this, callback, args );
 135         },
 136
 137         // Determine the position of an element within
 138         // the matched set of elements
 139         index: function( elem ) {
 140                 var ret = -1;
 141
 142                 // Locate the position of the desired element
 143                 return jQuery.inArray(
 144                         // If it receives a jQuery object, the first element is used
 145                         elem && elem.jquery ? elem[0] : elem
 146                 , this );
 147         },
 148
 149         attr: function( name, value, type ) {
 150                 var options = name;
 151
 152                 // Look for the case where we're accessing a style value
 153                 if ( name.constructor == String )
 154                         if ( value === undefined )
 155                                 return this[0] && jQuery[ type || "attr" ]( this[0], name );
 156
 157                         else {
 158                                 options = {};
 159                                 options[ name ] = value;
 160                         }
 161
 162                 // Check to see if we're setting style values
 163                 return this.each(function(i){
 164                         // Set all the styles
 165                         for ( name in options )
 166                                 jQuery.attr(
 167                                         type ?
 168                                                 this.style :
 169                                                 this,
 170                                         name, jQuery.prop( this, options[ name ], type, i, name )
 171                                 );
 172                 });
 173         },
 174
 175         css: function( key, value ) {
 176                 // ignore negative width and height values
 177                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 178                         value = undefined;
 179                 return this.attr( key, value, "curCSS" );
 180         },
 181
 182         text: function( text ) {
 183                 if ( typeof text != "object" && text != null )
 184                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 185
 186                 var ret = "";
 187
 188                 jQuery.each( text || this, function(){
 189                         jQuery.each( this.childNodes, function(){
 190                                 if ( this.nodeType != 8 )
 191                                         ret += this.nodeType != 1 ?
 192                                                 this.nodeValue :
 193                                                 jQuery.fn.text( [ this ] );
 194                         });
 195                 });
 196
 197                 return ret;
 198         },
 199
 200         wrapAll: function( html ) {
 201                 if ( this[0] )
 202                         // The elements to wrap the target around
 203                         jQuery( html, this[0].ownerDocument )
 204                                 .clone()
 205                                 .insertBefore( this[0] )
 206                                 .map(function(){
 207                                         var elem = this;
 208
 209                                         while ( elem.firstChild )
 210                                                 elem = elem.firstChild;
 211
 212                                         return elem;
 213                                 })
 214                                 .append(this);
 215
 216                 return this;
 217         },
 218
 219         wrapInner: function( html ) {
 220                 return this.each(function(){
 221                         jQuery( this ).contents().wrapAll( html );
 222                 });
 223         },
 224
 225         wrap: function( html ) {
 226                 return this.each(function(){
 227                         jQuery( this ).wrapAll( html );
 228                 });
 229         },
 230
 231         append: function() {
 232                 return this.domManip(arguments, true, false, function(elem){
 233                         if (this.nodeType == 1)
 234                                 this.appendChild( elem );
 235                 });
 236         },
 237
 238         prepend: function() {
 239                 return this.domManip(arguments, true, true, function(elem){
 240                         if (this.nodeType == 1)
 241                                 this.insertBefore( elem, this.firstChild );
 242                 });
 243         },
 244
 245         before: function() {
 246                 return this.domManip(arguments, false, false, function(elem){
 247                         this.parentNode.insertBefore( elem, this );
 248                 });
 249         },
 250
 251         after: function() {
 252                 return this.domManip(arguments, false, true, function(elem){
 253                         this.parentNode.insertBefore( elem, this.nextSibling );
 254                 });
 255         },
 256
 257         end: function() {
 258                 return this.prevObject || jQuery( [] );
 259         },
 260
 261         find: function( selector ) {
 262                 var elems = jQuery.map(this, function(elem){
 263                         return jQuery.find( selector, elem );
 264                 });
 265
 266                 return this.pushStack( /[^+>] [^+>]/.test( selector ) ?
 267                         jQuery.unique( elems ) :
 268                         elems );
 269         },
 270
 271         clone: function( events ) {
 272                 // Do the clone
 273                 var ret = this.map(function(){
 274                         if ( jQuery.browser.msie && !jQuery.isXMLDoc(this) ) {
 275                                 // IE copies events bound via attachEvent when
 276                                 // using cloneNode. Calling detachEvent on the
 277                                 // clone will also remove the events from the orignal
 278                                 // In order to get around this, we use innerHTML.
 279                                 // Unfortunately, this means some modifications to
 280                                 // attributes in IE that are actually only stored
 281                                 // as properties will not be copied (such as the
 282                                 // the name attribute on an input).
 283                                 var clone = this.cloneNode(true),
 284                                         container = document.createElement("div");
 285                                 container.appendChild(clone);
 286                                 return jQuery.clean([container.innerHTML])[0];
 287                         } else
 288                                 return this.cloneNode(true);
 289                 });
 290
 291                 // Need to set the expando to null on the cloned set if it exists
 292                 // removeData doesn't work here, IE removes it from the original as well
 293                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 294                 var clone = ret.find("*").andSelf().each(function(){
 295                         if ( this[ expando ] != undefined )
 296                                 this[ expando ] = null;
 297                 });
 298
 299                 // Copy the events from the original to the clone
 300                 if ( events === true )
 301                         this.find("*").andSelf().each(function(i){
 302                                 if (this.nodeType == 3)
 303                                         return;
 304                                 var events = jQuery.data( this, "events" );
 305
 306                                 for ( var type in events )
 307                                         for ( var handler in events[ type ] )
 308                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 309                         });
 310
 311                 // Return the cloned set
 312                 return ret;
 313         },
 314
 315         filter: function( selector ) {
 316                 return this.pushStack(
 317                         jQuery.isFunction( selector ) &&
 318                         jQuery.grep(this, function(elem, i){
 319                                 return selector.call( elem, i );
 320                         }) ||
 321
 322                         jQuery.multiFilter( selector, this ) );
 323         },
 324
 325         not: function( selector ) {
 326                 if ( selector.constructor == String )
 327                         // test special case where just one selector is passed in
 328                         if ( isSimple.test( selector ) )
 329                                 return this.pushStack( jQuery.multiFilter( selector, this, true ) );
 330                         else
 331                                 selector = jQuery.multiFilter( selector, this );
 332
 333                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 334                 return this.filter(function() {
 335                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 336                 });
 337         },
 338
 339         add: function( selector ) {
 340                 return this.pushStack( jQuery.unique( jQuery.merge(
 341                         this.get(),
 342                         typeof selector == 'string' ?
 343                                 jQuery( selector ) :
 344                                 jQuery.makeArray( selector )
 345                 )));
 346         },
 347
 348         is: function( selector ) {
 349                 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
 350         },
 351
 352         hasClass: function( selector ) {
 353                 return this.is( "." + selector );
 354         },
 355
 356         val: function( value ) {
 357                 if ( value == undefined ) {
 358                         var elem = this[0];
 359
 360                         if ( elem ) {
 361                                 if( jQuery.nodeName( elem, 'option' ) )
 362                                         return (elem.attributes.value || {}).specified ? elem.value : elem.text;
 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(option).val();
 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
 395                                 // Everything else, we just grab the value
 396                                 return (elem.value || "").replace(/\r/g, "");
 397
 398                         }
 399
 400                         return undefined;
 401                 }
 402
 403                 if( value.constructor == Number )
 404                         value += '';
 405
 406                 return this.each(function(){
 407                         if ( this.nodeType != 1 )
 408                                 return;
 409
 410                         if ( jQuery.isArray(value) && /radio|checkbox/.test( this.type ) )
 411                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 412                                         jQuery.inArray(this.name, value) >= 0);
 413
 414                         else if ( jQuery.nodeName( this, "select" ) ) {
 415                                 var values = jQuery.makeArray(value);
 416
 417                                 jQuery( "option", this ).each(function(){
 418                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 419                                                 jQuery.inArray( this.text, values ) >= 0);
 420                                 });
 421
 422                                 if ( !values.length )
 423                                         this.selectedIndex = -1;
 424
 425                         } else
 426                                 this.value = value;
 427                 });
 428         },
 429
 430         html: function( value ) {
 431                 return value == undefined ?
 432                         (this[0] ?
 433                                 this[0].innerHTML :
 434                                 null) :
 435                         this.empty().append( value );
 436         },
 437
 438         replaceWith: function( value ) {
 439                 return this.after( value ).remove();
 440         },
 441
 442         eq: function( i ) {
 443                 return this.slice( i, +i + 1 );
 444         },
 445
 446         slice: function() {
 447                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 448         },
 449
 450         map: function( callback ) {
 451                 return this.pushStack( jQuery.map(this, function(elem, i){
 452                         return callback.call( elem, i, elem );
 453                 }));
 454         },
 455
 456         andSelf: function() {
 457                 return this.add( this.prevObject );
 458         },
 459
 460         data: function( key, value ){
 461                 var parts = key.split(".");
 462                 parts[1] = parts[1] ? "." + parts[1] : "";
 463
 464                 if ( value === undefined ) {
 465                         var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);
 466
 467                         if ( data === undefined && this.length )
 468                                 data = jQuery.data( this[0], key );
 469
 470                         return data === undefined && parts[1] ?
 471                                 this.data( parts[0] ) :
 472                                 data;
 473                 } else
 474                         return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function(){
 475                                 jQuery.data( this, key, value );
 476                         });
 477         },
 478
 479         removeData: function( key ){
 480                 return this.each(function(){
 481                         jQuery.removeData( this, key );
 482                 });
 483         },
 484
 485         domManip: function( args, table, reverse, callback ) {
 486                 var clone = this.length > 1, elems;
 487
 488                 return this.each(function(){
 489                         if ( !elems ) {
 490                                 elems = jQuery.clean( args, this.ownerDocument );
 491
 492                                 if ( reverse )
 493                                         elems.reverse();
 494                         }
 495
 496                         var obj = this;
 497
 498                         if ( table && jQuery.nodeName( this, "table" ) && jQuery.nodeName( elems[0], "tr" ) )
 499                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild( this.ownerDocument.createElement("tbody") );
 500
 501                         var scripts = jQuery( [] );
 502
 503                         jQuery.each(elems, function(){
 504                                 var elem = clone ?
 505                                         jQuery( this ).clone( true )[0] :
 506                                         this;
 507
 508                                 // execute all scripts after the elements have been injected
 509                                 if ( jQuery.nodeName( elem, "script" ) )
 510                                         scripts = scripts.add( elem );
 511                                 else {
 512                                         // Remove any inner scripts for later evaluation
 513                                         if ( elem.nodeType == 1 )
 514                                                 scripts = scripts.add( jQuery( "script", elem ).remove() );
 515
 516                                         // Inject the elements into the document
 517                                         callback.call( obj, elem );
 518                                 }
 519                         });
 520
 521                         scripts.each( evalScript );
 522                 });
 523         }
 524 };
 525
 526 // Give the init function the jQuery prototype for later instantiation
 527 jQuery.fn.init.prototype = jQuery.fn;
 528
 529 function evalScript( i, elem ) {
 530         if ( elem.src )
 531                 jQuery.ajax({
 532                         url: elem.src,
 533                         async: false,
 534                         dataType: "script"
 535                 });
 536
 537         else
 538                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 539
 540         if ( elem.parentNode )
 541                 elem.parentNode.removeChild( elem );
 542 }
 543
 544 function now(){
 545         return +new Date;
 546 }
 547
 548 jQuery.extend = jQuery.fn.extend = function() {
 549         // copy reference to target object
 550         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 551
 552         // Handle a deep copy situation
 553         if ( target.constructor == Boolean ) {
 554                 deep = target;
 555                 target = arguments[1] || {};
 556                 // skip the boolean and the target
 557                 i = 2;
 558         }
 559
 560         // Handle case when target is a string or something (possible in deep copy)
 561         if ( typeof target != "object" && typeof target != "function" )
 562                 target = {};
 563
 564         // extend jQuery itself if only one argument is passed
 565         if ( length == i ) {
 566                 target = this;
 567                 --i;
 568         }
 569
 570         for ( ; i < length; i++ )
 571                 // Only deal with non-null/undefined values
 572                 if ( (options = arguments[ i ]) != null )
 573                         // Extend the base object
 574                         for ( var name in options ) {
 575                                 var src = target[ name ], copy = options[ name ];
 576
 577                                 // Prevent never-ending loop
 578                                 if ( target === copy )
 579                                         continue;
 580
 581                                 // Recurse if we're merging object values
 582                                 if ( deep && copy && typeof copy == "object" && !copy.nodeType )
 583                                         target[ name ] = jQuery.extend( deep,
 584                                                 // Never move original objects, clone them
 585                                                 src || ( copy.length != null ? [ ] : { } )
 586                                         , copy );
 587
 588                                 // Don't bring in undefined values
 589                                 else if ( copy !== undefined )
 590                                         target[ name ] = copy;
 591
 592                         }
 593
 594         // Return the modified object
 595         return target;
 596 };
 597
 598 var expando = "jQuery" + now(), uuid = 0, windowData = {},
 599         // exclude the following css properties to add px
 600         exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 601         // cache defaultView
 602         defaultView = document.defaultView || {};
 603
 604 jQuery.extend({
 605         noConflict: function( deep ) {
 606                 window.$ = _$;
 607
 608                 if ( deep )
 609                         window.jQuery = _jQuery;
 610
 611                 return jQuery;
 612         },
 613
 614         // See test/unit/core.js for details concerning this function.
 615         // Since version 1.3, DOM methods and functions like alert
 616         // aren't supported. They return false on IE (#2968).
 617
 618         // Memory leaks appear in IE6 when applying instanceof
 619         // to the window, document or any other COM object (#3485)
 620         // http://ajaxian.com/archives/working-aroung-the-instanceof-memory-leak
 621         isFunction: function( fn ) {
 622                 return !!fn && !!fn.hasOwnProperty && fn instanceof Function;
 623         },
 624
 625         isArray: function( arr ){
 626                 return !!arr && arr.constructor == Array;
 627         },
 628
 629         // check if an element is in a (or is an) XML document
 630         isXMLDoc: function( elem ) {
 631                 return elem.documentElement && !elem.body ||
 632                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 633         },
 634
 635         // Evalulates a script in a global context
 636         globalEval: function( data ) {
 637                 data = jQuery.trim( data );
 638
 639                 if ( data ) {
 640                         // Inspired by code by Andrea Giammarchi
 641                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 642                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 643                                 script = document.createElement("script");
 644
 645                         script.type = "text/javascript";
 646                         if ( jQuery.browser.msie )
 647                                 script.text = data;
 648                         else
 649                                 script.appendChild( document.createTextNode( data ) );
 650
 651                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 652                         // This arises when a base node is used (#2709).
 653                         head.insertBefore( script, head.firstChild );
 654                         head.removeChild( script );
 655                 }
 656         },
 657
 658         nodeName: function( elem, name ) {
 659                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 660         },
 661
 662         cache: {},
 663
 664         data: function( elem, name, data ) {
 665                 elem = elem == window ?
 666                         windowData :
 667                         elem;
 668
 669                 var id = elem[ expando ];
 670
 671                 // Compute a unique ID for the element
 672                 if ( !id )
 673                         id = elem[ expando ] = ++uuid;
 674
 675                 // Only generate the data cache if we're
 676                 // trying to access or manipulate it
 677                 if ( name && !jQuery.cache[ id ] )
 678                         jQuery.cache[ id ] = {};
 679
 680                 // Prevent overriding the named cache with undefined values
 681                 if ( data !== undefined )
 682                         jQuery.cache[ id ][ name ] = data;
 683
 684                 // Return the named cache data, or the ID for the element
 685                 return name ?
 686                         jQuery.cache[ id ][ name ] :
 687                         id;
 688         },
 689
 690         removeData: function( elem, name ) {
 691                 elem = elem == window ?
 692                         windowData :
 693                         elem;
 694
 695                 var id = elem[ expando ];
 696
 697                 // If we want to remove a specific section of the element's data
 698                 if ( name ) {
 699                         if ( jQuery.cache[ id ] ) {
 700                                 // Remove the section of cache data
 701                                 delete jQuery.cache[ id ][ name ];
 702
 703                                 // If we've removed all the data, remove the element's cache
 704                                 name = "";
 705
 706                                 for ( name in jQuery.cache[ id ] )
 707                                         break;
 708
 709                                 if ( !name )
 710                                         jQuery.removeData( elem );
 711                         }
 712
 713                 // Otherwise, we want to remove all of the element's data
 714                 } else {
 715                         // Clean up the element expando
 716                         try {
 717                                 delete elem[ expando ];
 718                         } catch(e){
 719                                 // IE has trouble directly removing the expando
 720                                 // but it's ok with using removeAttribute
 721                                 if ( elem.removeAttribute )
 722                                         elem.removeAttribute( expando );
 723                         }
 724
 725                         // Completely remove the data cache
 726                         delete jQuery.cache[ id ];
 727                 }
 728         },
 729
 730         // args is for internal usage only
 731         each: function( object, callback, args ) {
 732                 var name, i = 0, length = object.length;
 733
 734                 if ( args ) {
 735                         if ( length == undefined ) {
 736                                 for ( name in object )
 737                                         if ( callback.apply( object[ name ], args ) === false )
 738                                                 break;
 739                         } else
 740                                 for ( ; i < length; )
 741                                         if ( callback.apply( object[ i++ ], args ) === false )
 742                                                 break;
 743
 744                 // A special, fast, case for the most common use of each
 745                 } else {
 746                         if ( length == undefined ) {
 747                                 for ( name in object )
 748                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 749                                                 break;
 750                         } else
 751                                 for ( var value = object[0];
 752                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 753                 }
 754
 755                 return object;
 756         },
 757
 758         prop: function( elem, value, type, i, name ) {
 759                 // Handle executable functions
 760                 if ( jQuery.isFunction( value ) )
 761                         value = value.call( elem, i );
 762
 763                 // Handle passing in a number to a CSS property
 764                 return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 765                         value + "px" :
 766                         value;
 767         },
 768
 769         className: {
 770                 // internal only, use addClass("class")
 771                 add: function( elem, classNames ) {
 772                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 773                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 774                                         elem.className += (elem.className ? " " : "") + className;
 775                         });
 776                 },
 777
 778                 // internal only, use removeClass("class")
 779                 remove: function( elem, classNames ) {
 780                         if (elem.nodeType == 1)
 781                                 elem.className = classNames != undefined ?
 782                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 783                                                 return !jQuery.className.has( classNames, className );
 784                                         }).join(" ") :
 785                                         "";
 786                 },
 787
 788                 // internal only, use hasClass("class")
 789                 has: function( elem, className ) {
 790                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 791                 }
 792         },
 793
 794         // A method for quickly swapping in/out CSS properties to get correct calculations
 795         swap: function( elem, options, callback ) {
 796                 var old = {};
 797                 // Remember the old values, and insert the new ones
 798                 for ( var name in options ) {
 799                         old[ name ] = elem.style[ name ];
 800                         elem.style[ name ] = options[ name ];
 801                 }
 802
 803                 callback.call( elem );
 804
 805                 // Revert the old values
 806                 for ( var name in options )
 807                         elem.style[ name ] = old[ name ];
 808         },
 809
 810         css: function( elem, name, force ) {
 811                 if ( name == "width" || name == "height" ) {
 812                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 813
 814                         function getWH() {
 815                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 816                                 var padding = 0, border = 0;
 817                                 jQuery.each( which, function() {
 818                                         padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 819                                         border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 820                                 });
 821                                 val -= Math.round(padding + border);
 822                         }
 823
 824                         if ( jQuery(elem).is(":visible") )
 825                                 getWH();
 826                         else
 827                                 jQuery.swap( elem, props, getWH );
 828
 829                         return Math.max(0, val);
 830                 }
 831
 832                 return jQuery.curCSS( elem, name, force );
 833         },
 834
 835         curCSS: function( elem, name, force ) {
 836                 var ret, style = elem.style;
 837
 838                 // A helper method for determining if an element's values are broken
 839                 function color( elem ) {
 840                         if ( !jQuery.browser.safari )
 841                                 return false;
 842
 843                         // defaultView is cached
 844                         var ret = defaultView.getComputedStyle( elem, null );
 845                         return !ret || ret.getPropertyValue("color") == "";
 846                 }
 847
 848                 // We need to handle opacity special in IE
 849                 if ( name == "opacity" && jQuery.browser.msie ) {
 850                         ret = jQuery.attr( style, "opacity" );
 851
 852                         return ret == "" ?
 853                                 "1" :
 854                                 ret;
 855                 }
 856                 // Opera sometimes will give the wrong display answer, this fixes it, see #2037
 857                 if ( jQuery.browser.opera && name == "display" ) {
 858                         var save = style.outline;
 859                         style.outline = "0 solid black";
 860                         style.outline = save;
 861                 }
 862
 863                 // Make sure we're using the right name for getting the float value
 864                 if ( name.match( /float/i ) )
 865                         name = styleFloat;
 866
 867                 if ( !force && style && style[ name ] )
 868                         ret = style[ name ];
 869
 870                 else if ( defaultView.getComputedStyle ) {
 871
 872                         // Only "float" is needed here
 873                         if ( name.match( /float/i ) )
 874                                 name = "float";
 875
 876                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 877
 878                         var computedStyle = defaultView.getComputedStyle( elem, null );
 879
 880                         if ( computedStyle && !color( elem ) )
 881                                 ret = computedStyle.getPropertyValue( name );
 882
 883                         // If the element isn't reporting its values properly in Safari
 884                         // then some display: none elements are involved
 885                         else {
 886                                 var swap = [], stack = [], a = elem, i = 0;
 887
 888                                 // Locate all of the parent display: none elements
 889                                 for ( ; a && color(a); a = a.parentNode )
 890                                         stack.unshift(a);
 891
 892                                 // Go through and make them visible, but in reverse
 893                                 // (It would be better if we knew the exact display type that they had)
 894                                 for ( ; i < stack.length; i++ )
 895                                         if ( color( stack[ i ] ) ) {
 896                                                 swap[ i ] = stack[ i ].style.display;
 897                                                 stack[ i ].style.display = "block";
 898                                         }
 899
 900                                 // Since we flip the display style, we have to handle that
 901                                 // one special, otherwise get the value
 902                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 903                                         "none" :
 904                                         ( computedStyle && computedStyle.getPropertyValue( name ) ) || "";
 905
 906                                 // Finally, revert the display styles back
 907                                 for ( i = 0; i < swap.length; i++ )
 908                                         if ( swap[ i ] != null )
 909                                                 stack[ i ].style.display = swap[ i ];
 910                         }
 911
 912                         // We should always get a number back from opacity
 913                         if ( name == "opacity" && ret == "" )
 914                                 ret = "1";
 915
 916                 } else if ( elem.currentStyle ) {
 917                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 918                                 return letter.toUpperCase();
 919                         });
 920
 921                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 922
 923                         // From the awesome hack by Dean Edwards
 924                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 925
 926                         // If we're not dealing with a regular pixel number
 927                         // but a number that has a weird ending, we need to convert it to pixels
 928                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 929                                 // Remember the original values
 930                                 var left = style.left, rsLeft = elem.runtimeStyle.left;
 931
 932                                 // Put in the new values to get a computed value out
 933                                 elem.runtimeStyle.left = elem.currentStyle.left;
 934                                 style.left = ret || 0;
 935                                 ret = style.pixelLeft + "px";
 936
 937                                 // Revert the changed values
 938                                 style.left = left;
 939                                 elem.runtimeStyle.left = rsLeft;
 940                         }
 941                 }
 942
 943                 return ret;
 944         },
 945
 946         clean: function( elems, context ) {
 947                 var ret = [];
 948                 context = context || document;
 949                 // !context.createElement fails in IE with an error but returns typeof 'object'
 950                 if (typeof context.createElement == 'undefined')
 951                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 952
 953                 jQuery.each(elems, function(i, elem){
 954                         if ( typeof elem == 'number' )
 955                                 elem += '';
 956
 957                         if ( !elem )
 958                                 return;
 959
 960                         // Convert html string into DOM nodes
 961                         if ( typeof elem == "string" ) {
 962                                 // Fix "XHTML"-style tags in all browsers
 963                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 964                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 965                                                 all :
 966                                                 front + "></" + tag + ">";
 967                                 });
 968
 969                                 // Trim whitespace, otherwise indexOf won't work as expected
 970                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 971
 972                                 var wrap =
 973                                         // option or optgroup
 974                                         !tags.indexOf("<opt") &&
 975                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 976
 977                                         !tags.indexOf("<leg") &&
 978                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 979
 980                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 981                                         [ 1, "<table>", "</table>" ] ||
 982
 983                                         !tags.indexOf("<tr") &&
 984                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 985
 986                                         // <thead> matched above
 987                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 988                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 989
 990                                         !tags.indexOf("<col") &&
 991                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 992
 993                                         // IE can't serialize <link> and <script> tags normally
 994                                         jQuery.browser.msie &&
 995                                         [ 1, "div<div>", "</div>" ] ||
 996
 997                                         [ 0, "", "" ];
 998
 999                                 // Go to html and back, then peel off extra wrappers
1000                                 div.innerHTML = wrap[1] + elem + wrap[2];
1001
1002                                 // Move to the right depth
1003                                 while ( wrap[0]-- )
1004                                         div = div.lastChild;
1005
1006                                 // Remove IE's autoinserted <tbody> from table fragments
1007                                 if ( jQuery.browser.msie ) {
1008
1009                                         // String was a <table>, *may* have spurious <tbody>
1010                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
1011                                                 div.firstChild && div.firstChild.childNodes :
1012
1013                                                 // String was a bare <thead> or <tfoot>
1014                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
1015                                                         div.childNodes :
1016                                                         [];
1017
1018                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
1019                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
1020                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
1021
1022                                         // IE completely kills leading whitespace when innerHTML is used
1023                                         if ( /^\s/.test( elem ) )
1024                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
1025
1026                                 }
1027
1028                                 elem = jQuery.makeArray( div.childNodes );
1029                         }
1030
1031                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
1032                                 return;
1033
1034                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
1035                                 ret.push( elem );
1036
1037                         else
1038                                 ret = jQuery.merge( ret, elem );
1039
1040                 });
1041
1042                 return ret;
1043         },
1044
1045         attr: function( elem, name, value ) {
1046                 // don't set attributes on text and comment nodes
1047                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
1048                         return undefined;
1049
1050                 var notxml = !jQuery.isXMLDoc( elem ),
1051                         // Whether we are setting (or getting)
1052                         set = value !== undefined,
1053                         msie = jQuery.browser.msie;
1054
1055                 // Try to normalize/fix the name
1056                 name = notxml && jQuery.props[ name ] || name;
1057
1058                 // Only do all the following if this is a node (faster for style)
1059                 // IE elem.getAttribute passes even for style
1060                 if ( elem.tagName ) {
1061
1062                         // These attributes require special treatment
1063                         var special = /href|src|style/.test( name );
1064
1065                         // Safari mis-reports the default selected property of a hidden option
1066                         // Accessing the parent's selectedIndex property fixes it
1067                         if ( name == "selected" && jQuery.browser.safari )
1068                                 elem.parentNode.selectedIndex;
1069
1070                         // If applicable, access the attribute via the DOM 0 way
1071                         if ( name in elem && notxml && !special ) {
1072                                 if ( set ){
1073                                         // We can't allow the type property to be changed (since it causes problems in IE)
1074                                         if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1075                                                 throw "type property can't be changed";
1076
1077                                         elem[ name ] = value;
1078                                 }
1079
1080                                 // browsers index elements by id/name on forms, give priority to attributes.
1081                                 if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
1082                                         return elem.getAttributeNode( name ).nodeValue;
1083
1084                                 return elem[ name ];
1085                         }
1086
1087                         if ( msie && notxml &&  name == "style" )
1088                                 return jQuery.attr( elem.style, "cssText", value );
1089
1090                         if ( set )
1091                                 // convert the value to a string (all browsers do this but IE) see #1070
1092                                 elem.setAttribute( name, "" + value );
1093
1094                         var attr = msie && notxml && special
1095                                         // Some attributes require a special call on IE
1096                                         ? elem.getAttribute( name, 2 )
1097                                         : elem.getAttribute( name );
1098
1099                         // Non-existent attributes return null, we normalize to undefined
1100                         return attr === null ? undefined : attr;
1101                 }
1102
1103                 // elem is actually elem.style ... set the style
1104
1105                 // IE uses filters for opacity
1106                 if ( msie && name == "opacity" ) {
1107                         if ( set ) {
1108                                 // IE has trouble with opacity if it does not have layout
1109                                 // Force it by setting the zoom level
1110                                 elem.zoom = 1;
1111
1112                                 // Set the alpha filter to set the opacity
1113                                 elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1114                                         (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1115                         }
1116
1117                         return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1118                                 (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
1119                                 "";
1120                 }
1121
1122                 name = name.replace(/-([a-z])/ig, function(all, letter){
1123                         return letter.toUpperCase();
1124                 });
1125
1126                 if ( set )
1127                         elem[ name ] = value;
1128
1129                 return elem[ name ];
1130         },
1131
1132         trim: function( text ) {
1133                 return (text || "").replace( /^\s+|\s+$/g, "" );
1134         },
1135
1136         makeArray: function( array ) {
1137                 var ret = [];
1138
1139                 if( array != null ){
1140                         var i = array.length;
1141                         // The window, strings (and functions) also have 'length'
1142                         if( i == null || typeof array == 'string' || jQuery.isFunction(array) || array.setInterval )
1143                                 ret[0] = array;
1144                         else
1145                                 while( i )
1146                                         ret[--i] = array[i];
1147                 }
1148
1149                 return ret;
1150         },
1151
1152         inArray: function( elem, array ) {
1153                 for ( var i = 0, length = array.length; i < length; i++ )
1154                 // Use === because on IE, window == document
1155                         if ( array[ i ] === elem )
1156                                 return i;
1157
1158                 return -1;
1159         },
1160
1161         merge: function( first, second ) {
1162                 // We have to loop this way because IE & Opera overwrite the length
1163                 // expando of getElementsByTagName
1164                 var i = 0, elem, pos = first.length;
1165                 // Also, we need to make sure that the correct elements are being returned
1166                 // (IE returns comment nodes in a '*' query)
1167                 if ( jQuery.browser.msie ) {
1168                         while ( elem = second[ i++ ] )
1169                                 if ( elem.nodeType != 8 )
1170                                         first[ pos++ ] = elem;
1171
1172                 } else
1173                         while ( elem = second[ i++ ] )
1174                                 first[ pos++ ] = elem;
1175
1176                 return first;
1177         },
1178
1179         unique: function( array ) {
1180                 var ret = [], done = {};
1181
1182                 try {
1183
1184                         for ( var i = 0, length = array.length; i < length; i++ ) {
1185                                 var id = jQuery.data( array[ i ] );
1186
1187                                 if ( !done[ id ] ) {
1188                                         done[ id ] = true;
1189                                         ret.push( array[ i ] );
1190                                 }
1191                         }
1192
1193                 } catch( e ) {
1194                         ret = array;
1195                 }
1196
1197                 return ret;
1198         },
1199
1200         grep: function( elems, callback, inv ) {
1201                 var ret = [];
1202
1203                 // Go through the array, only saving the items
1204                 // that pass the validator function
1205                 for ( var i = 0, length = elems.length; i < length; i++ )
1206                         if ( !inv != !callback( elems[ i ], i ) )
1207                                 ret.push( elems[ i ] );
1208
1209                 return ret;
1210         },
1211
1212         map: function( elems, callback ) {
1213                 var ret = [];
1214
1215                 // Go through the array, translating each of the items to their
1216                 // new value (or values).
1217                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1218                         var value = callback( elems[ i ], i );
1219
1220                         if ( value != null )
1221                                 ret[ ret.length ] = value;
1222                 }
1223
1224                 return ret.concat.apply( [], ret );
1225         }
1226 });
1227
1228 var userAgent = navigator.userAgent.toLowerCase();
1229
1230 // Figure out what browser is being used
1231 jQuery.browser = {
1232         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
1233         safari: /webkit/.test( userAgent ),
1234         opera: /opera/.test( userAgent ),
1235         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1236         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1237 };
1238
1239 var styleFloat = jQuery.browser.msie ?
1240         "styleFloat" :
1241         "cssFloat";
1242
1243 jQuery.extend({
1244         // Check to see if the W3C box model is being used
1245         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1246
1247         props: {
1248                 "for": "htmlFor",
1249                 "class": "className",
1250                 "float": styleFloat,
1251                 cssFloat: styleFloat,
1252                 styleFloat: styleFloat,
1253                 readonly: "readOnly",
1254                 maxlength: "maxLength",
1255                 cellspacing: "cellSpacing",
1256                 rowspan: "rowSpan"
1257         }
1258 });
1259
1260 jQuery.each({
1261         parent: function(elem){return elem.parentNode;},
1262         parents: function(elem){return jQuery.dir(elem,"parentNode");},
1263         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
1264         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
1265         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
1266         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
1267         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
1268         children: function(elem){return jQuery.sibling(elem.firstChild);},
1269         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
1270 }, function(name, fn){
1271         jQuery.fn[ name ] = function( selector ) {
1272                 var ret = jQuery.map( this, fn );
1273
1274                 if ( selector && typeof selector == "string" )
1275                         ret = jQuery.multiFilter( selector, ret );
1276
1277                 return this.pushStack( jQuery.unique( ret ) );
1278         };
1279 });
1280
1281 jQuery.each({
1282         appendTo: "append",
1283         prependTo: "prepend",
1284         insertBefore: "before",
1285         insertAfter: "after",
1286         replaceAll: "replaceWith"
1287 }, function(name, original){
1288         jQuery.fn[ name ] = function() {
1289                 var args = arguments;
1290
1291                 return this.each(function(){
1292                         for ( var i = 0, length = args.length; i < length; i++ )
1293                                 jQuery( args[ i ] )[ original ]( this );
1294                 });
1295         };
1296 });
1297
1298 jQuery.each({
1299         removeAttr: function( name ) {
1300                 jQuery.attr( this, name, "" );
1301                 if (this.nodeType == 1)
1302                         this.removeAttribute( name );
1303         },
1304
1305         addClass: function( classNames ) {
1306                 jQuery.className.add( this, classNames );
1307         },
1308
1309         removeClass: function( classNames ) {
1310                 jQuery.className.remove( this, classNames );
1311         },
1312
1313         toggleClass: function( classNames ) {
1314                 jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
1315         },
1316
1317         remove: function( selector ) {
1318                 if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
1319                         // Prevent memory leaks
1320                         jQuery( "*", this ).add([this]).each(function(){
1321                                 jQuery.event.remove(this);
1322                                 jQuery.removeData(this);
1323                         });
1324                         if (this.parentNode)
1325                                 this.parentNode.removeChild( this );
1326                 }
1327         },
1328
1329         empty: function() {
1330                 // Remove element nodes and prevent memory leaks
1331                 jQuery( ">*", this ).remove();
1332
1333                 // Remove any remaining nodes
1334                 while ( this.firstChild )
1335                         this.removeChild( this.firstChild );
1336         }
1337 }, function(name, fn){
1338         jQuery.fn[ name ] = function(){
1339                 return this.each( fn, arguments );
1340         };
1341 });
1342
1343 jQuery.each([ "Height", "Width" ], function(i, name){
1344         var type = name.toLowerCase();
1345
1346         jQuery.fn[ type ] = function( size ) {
1347                 // Get window width or height
1348                 return this[0] == window ?
1349                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1350                         jQuery.browser.opera && document.body[ "client" + name ] ||
1351
1352                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1353                         jQuery.browser.safari && window[ "inner" + name ] ||
1354
1355                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1356                         document.compatMode == "CSS1Compat" && document.documentElement[ "client" + name ] || document.body[ "client" + name ] :
1357
1358                         // Get document width or height
1359                         this[0] == document ?
1360                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater
1361                                 Math.max(
1362                                         Math.max(document.body["scroll" + name], document.documentElement["scroll" + name]),
1363                                         Math.max(document.body["offset" + name], document.documentElement["offset" + name])
1364                                 ) :
1365
1366                                 // Get or set width or height on the element
1367                                 size == undefined ?
1368                                         // Get width or height on the element
1369                                         (this.length ? jQuery.css( this[0], type ) : null) :
1370
1371                                         // Set the width or height on the element (default to pixels if value is unitless)
1372                                         this.css( type, size.constructor == String ? size : size + "px" );
1373         };
1374 });
1375
1376 // Helper function used by the dimensions and offset modules
1377 function num(elem, prop) {
1378         return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
1379 }