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         // The number of elements contained in the matched element set
  94         length: 0,
  95
  96         // Get the Nth element in the matched element set OR
  97         // Get the whole matched element set as a clean array
  98         get: function( num ) {
  99                 return num == undefined ?
 100
 101                         // Return a 'clean' array
 102                         jQuery.makeArray( this ) :
 103
 104                         // Return just the object
 105                         this[ num ];
 106         },
 107
 108         // Take an array of elements and push it onto the stack
 109         // (returning the new matched element set)
 110         pushStack: function( elems ) {
 111                 // Build a new jQuery matched element set
 112                 var ret = jQuery( elems );
 113
 114                 // Add the old object onto the stack (as a reference)
 115                 ret.prevObject = this;
 116
 117                 // Return the newly-formed element set
 118                 return ret;
 119         },
 120
 121         // Force the current matched set of elements to become
 122         // the specified array of elements (destroying the stack in the process)
 123         // You should use pushStack() in order to do this, but maintain the stack
 124         setArray: function( elems ) {
 125                 // Resetting the length to 0, then using the native Array push
 126                 // is a super-fast way to populate an object with array-like properties
 127                 this.length = 0;
 128                 Array.prototype.push.apply( this, elems );
 129
 130                 return this;
 131         },
 132
 133         // Execute a callback for every element in the matched set.
 134         // (You can seed the arguments with an array of args, but this is
 135         // only used internally.)
 136         each: function( callback, args ) {
 137                 return jQuery.each( this, callback, args );
 138         },
 139
 140         // Determine the position of an element within
 141         // the matched set of elements
 142         index: function( elem ) {
 143                 var ret = -1;
 144
 145                 // Locate the position of the desired element
 146                 return jQuery.inArray(
 147                         // If it receives a jQuery object, the first element is used
 148                         elem && elem.jquery ? elem[0] : elem
 149                 , this );
 150         },
 151
 152         attr: function( name, value, type ) {
 153                 var options = name;
 154
 155                 // Look for the case where we're accessing a style value
 156                 if ( name.constructor == String )
 157                         if ( value === undefined )
 158                                 return this[0] && jQuery[ type || "attr" ]( this[0], name );
 159
 160                         else {
 161                                 options = {};
 162                                 options[ name ] = value;
 163                         }
 164
 165                 // Check to see if we're setting style values
 166                 return this.each(function(i){
 167                         // Set all the styles
 168                         for ( name in options )
 169                                 jQuery.attr(
 170                                         type ?
 171                                                 this.style :
 172                                                 this,
 173                                         name, jQuery.prop( this, options[ name ], type, i, name )
 174                                 );
 175                 });
 176         },
 177
 178         css: function( key, value ) {
 179                 // ignore negative width and height values
 180                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 181                         value = undefined;
 182                 return this.attr( key, value, "curCSS" );
 183         },
 184
 185         text: function( text ) {
 186                 if ( typeof text != "object" && text != null )
 187                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 188
 189                 var ret = "";
 190
 191                 jQuery.each( text || this, function(){
 192                         jQuery.each( this.childNodes, function(){
 193                                 if ( this.nodeType != 8 )
 194                                         ret += this.nodeType != 1 ?
 195                                                 this.nodeValue :
 196                                                 jQuery.fn.text( [ this ] );
 197                         });
 198                 });
 199
 200                 return ret;
 201         },
 202
 203         wrapAll: function( html ) {
 204                 if ( this[0] )
 205                         // The elements to wrap the target around
 206                         jQuery( html, this[0].ownerDocument )
 207                                 .clone()
 208                                 .insertBefore( this[0] )
 209                                 .map(function(){
 210                                         var elem = this;
 211
 212                                         while ( elem.firstChild )
 213                                                 elem = elem.firstChild;
 214
 215                                         return elem;
 216                                 })
 217                                 .append(this);
 218
 219                 return this;
 220         },
 221
 222         wrapInner: function( html ) {
 223                 return this.each(function(){
 224                         jQuery( this ).contents().wrapAll( html );
 225                 });
 226         },
 227
 228         wrap: function( html ) {
 229                 return this.each(function(){
 230                         jQuery( this ).wrapAll( html );
 231                 });
 232         },
 233
 234         append: function() {
 235                 return this.domManip(arguments, true, false, function(elem){
 236                         if (this.nodeType == 1)
 237                                 this.appendChild( elem );
 238                 });
 239         },
 240
 241         prepend: function() {
 242                 return this.domManip(arguments, true, true, function(elem){
 243                         if (this.nodeType == 1)
 244                                 this.insertBefore( elem, this.firstChild );
 245                 });
 246         },
 247
 248         before: function() {
 249                 return this.domManip(arguments, false, false, function(elem){
 250                         this.parentNode.insertBefore( elem, this );
 251                 });
 252         },
 253
 254         after: function() {
 255                 return this.domManip(arguments, false, true, function(elem){
 256                         this.parentNode.insertBefore( elem, this.nextSibling );
 257                 });
 258         },
 259
 260         end: function() {
 261                 return this.prevObject || jQuery( [] );
 262         },
 263
 264         find: function( selector ) {
 265                 var elems = jQuery.map(this, function(elem){
 266                         return jQuery.find( selector, elem );
 267                 });
 268
 269                 return this.pushStack( /[^+>] [^+>]/.test( selector ) ?
 270                         jQuery.unique( elems ) :
 271                         elems );
 272         },
 273
 274         clone: function( events ) {
 275                 // Do the clone
 276                 var ret = this.map(function(){
 277                         if ( jQuery.browser.msie && !jQuery.isXMLDoc(this) ) {
 278                                 // IE copies events bound via attachEvent when
 279                                 // using cloneNode. Calling detachEvent on the
 280                                 // clone will also remove the events from the orignal
 281                                 // In order to get around this, we use innerHTML.
 282                                 // Unfortunately, this means some modifications to
 283                                 // attributes in IE that are actually only stored
 284                                 // as properties will not be copied (such as the
 285                                 // the name attribute on an input).
 286                                 var clone = this.cloneNode(true),
 287                                         container = document.createElement("div");
 288                                 container.appendChild(clone);
 289                                 return jQuery.clean([container.innerHTML])[0];
 290                         } else
 291                                 return this.cloneNode(true);
 292                 });
 293
 294                 // Need to set the expando to null on the cloned set if it exists
 295                 // removeData doesn't work here, IE removes it from the original as well
 296                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 297                 var clone = ret.find("*").andSelf().each(function(){
 298                         if ( this[ expando ] != undefined )
 299                                 this[ expando ] = null;
 300                 });
 301
 302                 // Copy the events from the original to the clone
 303                 if ( events === true )
 304                         this.find("*").andSelf().each(function(i){
 305                                 if (this.nodeType == 3)
 306                                         return;
 307                                 var events = jQuery.data( this, "events" );
 308
 309                                 for ( var type in events )
 310                                         for ( var handler in events[ type ] )
 311                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 312                         });
 313
 314                 // Return the cloned set
 315                 return ret;
 316         },
 317
 318         filter: function( selector ) {
 319                 return this.pushStack(
 320                         jQuery.isFunction( selector ) &&
 321                         jQuery.grep(this, function(elem, i){
 322                                 return selector.call( elem, i );
 323                         }) ||
 324
 325                         jQuery.multiFilter( selector, this ) );
 326         },
 327
 328         not: function( selector ) {
 329                 if ( selector.constructor == String )
 330                         // test special case where just one selector is passed in
 331                         if ( isSimple.test( selector ) )
 332                                 return this.pushStack( jQuery.multiFilter( selector, this, true ) );
 333                         else
 334                                 selector = jQuery.multiFilter( selector, this );
 335
 336                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 337                 return this.filter(function() {
 338                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 339                 });
 340         },
 341
 342         add: function( selector ) {
 343                 return this.pushStack( jQuery.unique( jQuery.merge(
 344                         this.get(),
 345                         typeof selector == 'string' ?
 346                                 jQuery( selector ) :
 347                                 jQuery.makeArray( selector )
 348                 )));
 349         },
 350
 351         is: function( selector ) {
 352                 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
 353         },
 354
 355         hasClass: function( selector ) {
 356                 return this.is( "." + selector );
 357         },
 358
 359         val: function( value ) {
 360                 if ( value == undefined ) {
 361                         var elem = this[0];
 362
 363                         if ( elem ) {
 364                                 if( jQuery.nodeName( elem, 'option' ) )
 365                                         return (elem.attributes.value || {}).specified ? elem.value : elem.text;
 366
 367                                 // We need to handle select boxes special
 368                                 if ( jQuery.nodeName( elem, "select" ) ) {
 369                                         var index = elem.selectedIndex,
 370                                                 values = [],
 371                                                 options = elem.options,
 372                                                 one = elem.type == "select-one";
 373
 374                                         // Nothing was selected
 375                                         if ( index < 0 )
 376                                                 return null;
 377
 378                                         // Loop through all the selected options
 379                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 380                                                 var option = options[ i ];
 381
 382                                                 if ( option.selected ) {
 383                                                         // Get the specifc value for the option
 384                                                         value = jQuery(option).val();
 385
 386                                                         // We don't need an array for one selects
 387                                                         if ( one )
 388                                                                 return value;
 389
 390                                                         // Multi-Selects return an array
 391                                                         values.push( value );
 392                                                 }
 393                                         }
 394
 395                                         return values;
 396                                 }
 397
 398                                 // Everything else, we just grab the value
 399                                 return (elem.value || "").replace(/\r/g, "");
 400
 401                         }
 402
 403                         return undefined;
 404                 }
 405
 406                 if( value.constructor == Number )
 407                         value += '';
 408
 409                 return this.each(function(){
 410                         if ( this.nodeType != 1 )
 411                                 return;
 412
 413                         if ( value.constructor == Array && /radio|checkbox/.test( this.type ) )
 414                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 415                                         jQuery.inArray(this.name, value) >= 0);
 416
 417                         else if ( jQuery.nodeName( this, "select" ) ) {
 418                                 var values = jQuery.makeArray(value);
 419
 420                                 jQuery( "option", this ).each(function(){
 421                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 422                                                 jQuery.inArray( this.text, values ) >= 0);
 423                                 });
 424
 425                                 if ( !values.length )
 426                                         this.selectedIndex = -1;
 427
 428                         } else
 429                                 this.value = value;
 430                 });
 431         },
 432
 433         html: function( value ) {
 434                 return value == undefined ?
 435                         (this[0] ?
 436                                 this[0].innerHTML :
 437                                 null) :
 438                         this.empty().append( value );
 439         },
 440
 441         replaceWith: function( value ) {
 442                 return this.after( value ).remove();
 443         },
 444
 445         eq: function( i ) {
 446                 return this.slice( i, +i + 1 );
 447         },
 448
 449         slice: function() {
 450                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 451         },
 452
 453         map: function( callback ) {
 454                 return this.pushStack( jQuery.map(this, function(elem, i){
 455                         return callback.call( elem, i, elem );
 456                 }));
 457         },
 458
 459         andSelf: function() {
 460                 return this.add( this.prevObject );
 461         },
 462
 463         data: function( key, value ){
 464                 var parts = key.split(".");
 465                 parts[1] = parts[1] ? "." + parts[1] : "";
 466
 467                 if ( value === undefined ) {
 468                         var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);
 469
 470                         if ( data === undefined && this.length )
 471                                 data = jQuery.data( this[0], key );
 472
 473                         return data === undefined && parts[1] ?
 474                                 this.data( parts[0] ) :
 475                                 data;
 476                 } else
 477                         return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function(){
 478                                 jQuery.data( this, key, value );
 479                         });
 480         },
 481
 482         removeData: function( key ){
 483                 return this.each(function(){
 484                         jQuery.removeData( this, key );
 485                 });
 486         },
 487
 488         domManip: function( args, table, reverse, callback ) {
 489                 var clone = this.length > 1, elems;
 490
 491                 return this.each(function(){
 492                         if ( !elems ) {
 493                                 elems = jQuery.clean( args, this.ownerDocument );
 494
 495                                 if ( reverse )
 496                                         elems.reverse();
 497                         }
 498
 499                         var obj = this;
 500
 501                         if ( table && jQuery.nodeName( this, "table" ) && jQuery.nodeName( elems[0], "tr" ) )
 502                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild( this.ownerDocument.createElement("tbody") );
 503
 504                         var scripts = jQuery( [] );
 505
 506                         jQuery.each(elems, function(){
 507                                 var elem = clone ?
 508                                         jQuery( this ).clone( true )[0] :
 509                                         this;
 510
 511                                 // execute all scripts after the elements have been injected
 512                                 if ( jQuery.nodeName( elem, "script" ) )
 513                                         scripts = scripts.add( elem );
 514                                 else {
 515                                         // Remove any inner scripts for later evaluation
 516                                         if ( elem.nodeType == 1 )
 517                                                 scripts = scripts.add( jQuery( "script", elem ).remove() );
 518
 519                                         // Inject the elements into the document
 520                                         callback.call( obj, elem );
 521                                 }
 522                         });
 523
 524                         scripts.each( evalScript );
 525                 });
 526         }
 527 };
 528
 529 // Give the init function the jQuery prototype for later instantiation
 530 jQuery.fn.init.prototype = jQuery.fn;
 531
 532 function evalScript( i, elem ) {
 533         if ( elem.src )
 534                 jQuery.ajax({
 535                         url: elem.src,
 536                         async: false,
 537                         dataType: "script"
 538                 });
 539
 540         else
 541                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 542
 543         if ( elem.parentNode )
 544                 elem.parentNode.removeChild( elem );
 545 }
 546
 547 function now(){
 548         return +new Date;
 549 }
 550
 551 jQuery.extend = jQuery.fn.extend = function() {
 552         // copy reference to target object
 553         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 554
 555         // Handle a deep copy situation
 556         if ( target.constructor == Boolean ) {
 557                 deep = target;
 558                 target = arguments[1] || {};
 559                 // skip the boolean and the target
 560                 i = 2;
 561         }
 562
 563         // Handle case when target is a string or something (possible in deep copy)
 564         if ( typeof target != "object" && typeof target != "function" )
 565                 target = {};
 566
 567         // extend jQuery itself if only one argument is passed
 568         if ( length == i ) {
 569                 target = this;
 570                 --i;
 571         }
 572
 573         for ( ; i < length; i++ )
 574                 // Only deal with non-null/undefined values
 575                 if ( (options = arguments[ i ]) != null )
 576                         // Extend the base object
 577                         for ( var name in options ) {
 578                                 var src = target[ name ], copy = options[ name ];
 579
 580                                 // Prevent never-ending loop
 581                                 if ( target === copy )
 582                                         continue;
 583
 584                                 // Recurse if we're merging object values
 585                                 if ( deep && copy && typeof copy == "object" && !copy.nodeType )
 586                                         target[ name ] = jQuery.extend( deep,
 587                                                 // Never move original objects, clone them
 588                                                 src || ( copy.length != null ? [ ] : { } )
 589                                         , copy );
 590
 591                                 // Don't bring in undefined values
 592                                 else if ( copy !== undefined )
 593                                         target[ name ] = copy;
 594
 595                         }
 596
 597         // Return the modified object
 598         return target;
 599 };
 600
 601 var expando = "jQuery" + now(), uuid = 0, windowData = {},
 602         // exclude the following css properties to add px
 603         exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 604         // cache defaultView
 605         defaultView = document.defaultView || {};
 606
 607 jQuery.extend({
 608         noConflict: function( deep ) {
 609                 window.$ = _$;
 610
 611                 if ( deep )
 612                         window.jQuery = _jQuery;
 613
 614                 return jQuery;
 615         },
 616
 617         // See test/unit/core.js for details concerning this function.
 618         // Since 1.3 DOM methods and function like alert
 619         // aren't supported. They return false on IE (#2968).
 620         isFunction: function( fn ) {
 621                 return fn instanceof Function;
 622         },
 623
 624         // check if an element is in a (or is an) XML document
 625         isXMLDoc: function( elem ) {
 626                 return elem.documentElement && !elem.body ||
 627                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 628         },
 629
 630         // Evalulates a script in a global context
 631         globalEval: function( data ) {
 632                 data = jQuery.trim( data );
 633
 634                 if ( data ) {
 635                         // Inspired by code by Andrea Giammarchi
 636                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 637                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 638                                 script = document.createElement("script");
 639
 640                         script.type = "text/javascript";
 641                         if ( jQuery.browser.msie )
 642                                 script.text = data;
 643                         else
 644                                 script.appendChild( document.createTextNode( data ) );
 645
 646                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 647                         // This arises when a base node is used (#2709).
 648                         head.insertBefore( script, head.firstChild );
 649                         head.removeChild( script );
 650                 }
 651         },
 652
 653         nodeName: function( elem, name ) {
 654                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 655         },
 656
 657         cache: {},
 658
 659         data: function( elem, name, data ) {
 660                 elem = elem == window ?
 661                         windowData :
 662                         elem;
 663
 664                 var id = elem[ expando ];
 665
 666                 // Compute a unique ID for the element
 667                 if ( !id )
 668                         id = elem[ expando ] = ++uuid;
 669
 670                 // Only generate the data cache if we're
 671                 // trying to access or manipulate it
 672                 if ( name && !jQuery.cache[ id ] )
 673                         jQuery.cache[ id ] = {};
 674
 675                 // Prevent overriding the named cache with undefined values
 676                 if ( data !== undefined )
 677                         jQuery.cache[ id ][ name ] = data;
 678
 679                 // Return the named cache data, or the ID for the element
 680                 return name ?
 681                         jQuery.cache[ id ][ name ] :
 682                         id;
 683         },
 684
 685         removeData: function( elem, name ) {
 686                 elem = elem == window ?
 687                         windowData :
 688                         elem;
 689
 690                 var id = elem[ expando ];
 691
 692                 // If we want to remove a specific section of the element's data
 693                 if ( name ) {
 694                         if ( jQuery.cache[ id ] ) {
 695                                 // Remove the section of cache data
 696                                 delete jQuery.cache[ id ][ name ];
 697
 698                                 // If we've removed all the data, remove the element's cache
 699                                 name = "";
 700
 701                                 for ( name in jQuery.cache[ id ] )
 702                                         break;
 703
 704                                 if ( !name )
 705                                         jQuery.removeData( elem );
 706                         }
 707
 708                 // Otherwise, we want to remove all of the element's data
 709                 } else {
 710                         // Clean up the element expando
 711                         try {
 712                                 delete elem[ expando ];
 713                         } catch(e){
 714                                 // IE has trouble directly removing the expando
 715                                 // but it's ok with using removeAttribute
 716                                 if ( elem.removeAttribute )
 717                                         elem.removeAttribute( expando );
 718                         }
 719
 720                         // Completely remove the data cache
 721                         delete jQuery.cache[ id ];
 722                 }
 723         },
 724
 725         // args is for internal usage only
 726         each: function( object, callback, args ) {
 727                 var name, i = 0, length = object.length;
 728
 729                 if ( args ) {
 730                         if ( length == undefined ) {
 731                                 for ( name in object )
 732                                         if ( callback.apply( object[ name ], args ) === false )
 733                                                 break;
 734                         } else
 735                                 for ( ; i < length; )
 736                                         if ( callback.apply( object[ i++ ], args ) === false )
 737                                                 break;
 738
 739                 // A special, fast, case for the most common use of each
 740                 } else {
 741                         if ( length == undefined ) {
 742                                 for ( name in object )
 743                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 744                                                 break;
 745                         } else
 746                                 for ( var value = object[0];
 747                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 748                 }
 749
 750                 return object;
 751         },
 752
 753         prop: function( elem, value, type, i, name ) {
 754                 // Handle executable functions
 755                 if ( jQuery.isFunction( value ) )
 756                         value = value.call( elem, i );
 757
 758                 // Handle passing in a number to a CSS property
 759                 return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 760                         value + "px" :
 761                         value;
 762         },
 763
 764         className: {
 765                 // internal only, use addClass("class")
 766                 add: function( elem, classNames ) {
 767                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 768                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 769                                         elem.className += (elem.className ? " " : "") + className;
 770                         });
 771                 },
 772
 773                 // internal only, use removeClass("class")
 774                 remove: function( elem, classNames ) {
 775                         if (elem.nodeType == 1)
 776                                 elem.className = classNames != undefined ?
 777                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 778                                                 return !jQuery.className.has( classNames, className );
 779                                         }).join(" ") :
 780                                         "";
 781                 },
 782
 783                 // internal only, use hasClass("class")
 784                 has: function( elem, className ) {
 785                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 786                 }
 787         },
 788
 789         // A method for quickly swapping in/out CSS properties to get correct calculations
 790         swap: function( elem, options, callback ) {
 791                 var old = {};
 792                 // Remember the old values, and insert the new ones
 793                 for ( var name in options ) {
 794                         old[ name ] = elem.style[ name ];
 795                         elem.style[ name ] = options[ name ];
 796                 }
 797
 798                 callback.call( elem );
 799
 800                 // Revert the old values
 801                 for ( var name in options )
 802                         elem.style[ name ] = old[ name ];
 803         },
 804
 805         css: function( elem, name, force ) {
 806                 if ( name == "width" || name == "height" ) {
 807                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 808
 809                         function getWH() {
 810                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 811                                 var padding = 0, border = 0;
 812                                 jQuery.each( which, function() {
 813                                         padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 814                                         border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 815                                 });
 816                                 val -= Math.round(padding + border);
 817                         }
 818
 819                         if ( jQuery(elem).is(":visible") )
 820                                 getWH();
 821                         else
 822                                 jQuery.swap( elem, props, getWH );
 823
 824                         return Math.max(0, val);
 825                 }
 826
 827                 return jQuery.curCSS( elem, name, force );
 828         },
 829
 830         curCSS: function( elem, name, force ) {
 831                 var ret, style = elem.style;
 832
 833                 // A helper method for determining if an element's values are broken
 834                 function color( elem ) {
 835                         if ( !jQuery.browser.safari )
 836                                 return false;
 837
 838                         // defaultView is cached
 839                         var ret = defaultView.getComputedStyle( elem, null );
 840                         return !ret || ret.getPropertyValue("color") == "";
 841                 }
 842
 843                 // We need to handle opacity special in IE
 844                 if ( name == "opacity" && jQuery.browser.msie ) {
 845                         ret = jQuery.attr( style, "opacity" );
 846
 847                         return ret == "" ?
 848                                 "1" :
 849                                 ret;
 850                 }
 851                 // Opera sometimes will give the wrong display answer, this fixes it, see #2037
 852                 if ( jQuery.browser.opera && name == "display" ) {
 853                         var save = style.outline;
 854                         style.outline = "0 solid black";
 855                         style.outline = save;
 856                 }
 857
 858                 // Make sure we're using the right name for getting the float value
 859                 if ( name.match( /float/i ) )
 860                         name = styleFloat;
 861
 862                 if ( !force && style && style[ name ] )
 863                         ret = style[ name ];
 864
 865                 else if ( defaultView.getComputedStyle ) {
 866
 867                         // Only "float" is needed here
 868                         if ( name.match( /float/i ) )
 869                                 name = "float";
 870
 871                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 872
 873                         var computedStyle = defaultView.getComputedStyle( elem, null );
 874
 875                         if ( computedStyle && !color( elem ) )
 876                                 ret = computedStyle.getPropertyValue( name );
 877
 878                         // If the element isn't reporting its values properly in Safari
 879                         // then some display: none elements are involved
 880                         else {
 881                                 var swap = [], stack = [], a = elem, i = 0;
 882
 883                                 // Locate all of the parent display: none elements
 884                                 for ( ; a && color(a); a = a.parentNode )
 885                                         stack.unshift(a);
 886
 887                                 // Go through and make them visible, but in reverse
 888                                 // (It would be better if we knew the exact display type that they had)
 889                                 for ( ; i < stack.length; i++ )
 890                                         if ( color( stack[ i ] ) ) {
 891                                                 swap[ i ] = stack[ i ].style.display;
 892                                                 stack[ i ].style.display = "block";
 893                                         }
 894
 895                                 // Since we flip the display style, we have to handle that
 896                                 // one special, otherwise get the value
 897                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 898                                         "none" :
 899                                         ( computedStyle && computedStyle.getPropertyValue( name ) ) || "";
 900
 901                                 // Finally, revert the display styles back
 902                                 for ( i = 0; i < swap.length; i++ )
 903                                         if ( swap[ i ] != null )
 904                                                 stack[ i ].style.display = swap[ i ];
 905                         }
 906
 907                         // We should always get a number back from opacity
 908                         if ( name == "opacity" && ret == "" )
 909                                 ret = "1";
 910
 911                 } else if ( elem.currentStyle ) {
 912                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 913                                 return letter.toUpperCase();
 914                         });
 915
 916                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 917
 918                         // From the awesome hack by Dean Edwards
 919                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 920
 921                         // If we're not dealing with a regular pixel number
 922                         // but a number that has a weird ending, we need to convert it to pixels
 923                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 924                                 // Remember the original values
 925                                 var left = style.left, rsLeft = elem.runtimeStyle.left;
 926
 927                                 // Put in the new values to get a computed value out
 928                                 elem.runtimeStyle.left = elem.currentStyle.left;
 929                                 style.left = ret || 0;
 930                                 ret = style.pixelLeft + "px";
 931
 932                                 // Revert the changed values
 933                                 style.left = left;
 934                                 elem.runtimeStyle.left = rsLeft;
 935                         }
 936                 }
 937
 938                 return ret;
 939         },
 940
 941         clean: function( elems, context ) {
 942                 var ret = [];
 943                 context = context || document;
 944                 // !context.createElement fails in IE with an error but returns typeof 'object'
 945                 if (typeof context.createElement == 'undefined')
 946                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 947
 948                 jQuery.each(elems, function(i, elem){
 949                         if ( typeof elem == 'number' )
 950                                 elem += '';
 951
 952                         if ( !elem )
 953                                 return;
 954
 955                         // Convert html string into DOM nodes
 956                         if ( typeof elem == "string" ) {
 957                                 // Fix "XHTML"-style tags in all browsers
 958                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 959                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 960                                                 all :
 961                                                 front + "></" + tag + ">";
 962                                 });
 963
 964                                 // Trim whitespace, otherwise indexOf won't work as expected
 965                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 966
 967                                 var wrap =
 968                                         // option or optgroup
 969                                         !tags.indexOf("<opt") &&
 970                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 971
 972                                         !tags.indexOf("<leg") &&
 973                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 974
 975                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 976                                         [ 1, "<table>", "</table>" ] ||
 977
 978                                         !tags.indexOf("<tr") &&
 979                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 980
 981                                         // <thead> matched above
 982                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 983                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 984
 985                                         !tags.indexOf("<col") &&
 986                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 987
 988                                         // IE can't serialize <link> and <script> tags normally
 989                                         jQuery.browser.msie &&
 990                                         [ 1, "div<div>", "</div>" ] ||
 991
 992                                         [ 0, "", "" ];
 993
 994                                 // Go to html and back, then peel off extra wrappers
 995                                 div.innerHTML = wrap[1] + elem + wrap[2];
 996
 997                                 // Move to the right depth
 998                                 while ( wrap[0]-- )
 999                                         div = div.lastChild;
1000
1001                                 // Remove IE's autoinserted <tbody> from table fragments
1002                                 if ( jQuery.browser.msie ) {
1003
1004                                         // String was a <table>, *may* have spurious <tbody>
1005                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
1006                                                 div.firstChild && div.firstChild.childNodes :
1007
1008                                                 // String was a bare <thead> or <tfoot>
1009                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
1010                                                         div.childNodes :
1011                                                         [];
1012
1013                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
1014                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
1015                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
1016
1017                                         // IE completely kills leading whitespace when innerHTML is used
1018                                         if ( /^\s/.test( elem ) )
1019                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
1020
1021                                 }
1022
1023                                 elem = jQuery.makeArray( div.childNodes );
1024                         }
1025
1026                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
1027                                 return;
1028
1029                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
1030                                 ret.push( elem );
1031
1032                         else
1033                                 ret = jQuery.merge( ret, elem );
1034
1035                 });
1036
1037                 return ret;
1038         },
1039
1040         attr: function( elem, name, value ) {
1041                 // don't set attributes on text and comment nodes
1042                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
1043                         return undefined;
1044
1045                 var notxml = !jQuery.isXMLDoc( elem ),
1046                         // Whether we are setting (or getting)
1047                         set = value !== undefined,
1048                         msie = jQuery.browser.msie;
1049
1050                 // Try to normalize/fix the name
1051                 name = notxml && jQuery.props[ name ] || name;
1052
1053                 // Only do all the following if this is a node (faster for style)
1054                 // IE elem.getAttribute passes even for style
1055                 if ( elem.tagName ) {
1056
1057                         // These attributes require special treatment
1058                         var special = /href|src|style/.test( name );
1059
1060                         // Safari mis-reports the default selected property of a hidden option
1061                         // Accessing the parent's selectedIndex property fixes it
1062                         if ( name == "selected" && jQuery.browser.safari )
1063                                 elem.parentNode.selectedIndex;
1064
1065                         // If applicable, access the attribute via the DOM 0 way
1066                         if ( name in elem && notxml && !special ) {
1067                                 if ( set ){
1068                                         // We can't allow the type property to be changed (since it causes problems in IE)
1069                                         if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1070                                                 throw "type property can't be changed";
1071
1072                                         elem[ name ] = value;
1073                                 }
1074
1075                                 // browsers index elements by id/name on forms, give priority to attributes.
1076                                 if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
1077                                         return elem.getAttributeNode( name ).nodeValue;
1078
1079                                 return elem[ name ];
1080                         }
1081
1082                         if ( msie && notxml &&  name == "style" )
1083                                 return jQuery.attr( elem.style, "cssText", value );
1084
1085                         if ( set )
1086                                 // convert the value to a string (all browsers do this but IE) see #1070
1087                                 elem.setAttribute( name, "" + value );
1088
1089                         var attr = msie && notxml && special
1090                                         // Some attributes require a special call on IE
1091                                         ? elem.getAttribute( name, 2 )
1092                                         : elem.getAttribute( name );
1093
1094                         // Non-existent attributes return null, we normalize to undefined
1095                         return attr === null ? undefined : attr;
1096                 }
1097
1098                 // elem is actually elem.style ... set the style
1099
1100                 // IE uses filters for opacity
1101                 if ( msie && name == "opacity" ) {
1102                         if ( set ) {
1103                                 // IE has trouble with opacity if it does not have layout
1104                                 // Force it by setting the zoom level
1105                                 elem.zoom = 1;
1106
1107                                 // Set the alpha filter to set the opacity
1108                                 elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1109                                         (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1110                         }
1111
1112                         return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1113                                 (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
1114                                 "";
1115                 }
1116
1117                 name = name.replace(/-([a-z])/ig, function(all, letter){
1118                         return letter.toUpperCase();
1119                 });
1120
1121                 if ( set )
1122                         elem[ name ] = value;
1123
1124                 return elem[ name ];
1125         },
1126
1127         trim: function( text ) {
1128                 return (text || "").replace( /^\s+|\s+$/g, "" );
1129         },
1130
1131         makeArray: function( array ) {
1132                 var ret = [];
1133
1134                 if( array != null ){
1135                         var i = array.length;
1136                         //the window, strings and functions also have 'length'
1137                         if( i == null || array.split || array.setInterval || array.call )
1138                                 ret[0] = array;
1139                         else
1140                                 while( i )
1141                                         ret[--i] = array[i];
1142                 }
1143
1144                 return ret;
1145         },
1146
1147         inArray: function( elem, array ) {
1148                 for ( var i = 0, length = array.length; i < length; i++ )
1149                 // Use === because on IE, window == document
1150                         if ( array[ i ] === elem )
1151                                 return i;
1152
1153                 return -1;
1154         },
1155
1156         merge: function( first, second ) {
1157                 // We have to loop this way because IE & Opera overwrite the length
1158                 // expando of getElementsByTagName
1159                 var i = 0, elem, pos = first.length;
1160                 // Also, we need to make sure that the correct elements are being returned
1161                 // (IE returns comment nodes in a '*' query)
1162                 if ( jQuery.browser.msie ) {
1163                         while ( elem = second[ i++ ] )
1164                                 if ( elem.nodeType != 8 )
1165                                         first[ pos++ ] = elem;
1166
1167                 } else
1168                         while ( elem = second[ i++ ] )
1169                                 first[ pos++ ] = elem;
1170
1171                 return first;
1172         },
1173
1174         unique: function( array ) {
1175                 var ret = [], done = {};
1176
1177                 try {
1178
1179                         for ( var i = 0, length = array.length; i < length; i++ ) {
1180                                 var id = jQuery.data( array[ i ] );
1181
1182                                 if ( !done[ id ] ) {
1183                                         done[ id ] = true;
1184                                         ret.push( array[ i ] );
1185                                 }
1186                         }
1187
1188                 } catch( e ) {
1189                         ret = array;
1190                 }
1191
1192                 return ret;
1193         },
1194
1195         grep: function( elems, callback, inv ) {
1196                 var ret = [];
1197
1198                 // Go through the array, only saving the items
1199                 // that pass the validator function
1200                 for ( var i = 0, length = elems.length; i < length; i++ )
1201                         if ( !inv != !callback( elems[ i ], i ) )
1202                                 ret.push( elems[ i ] );
1203
1204                 return ret;
1205         },
1206
1207         map: function( elems, callback ) {
1208                 var ret = [];
1209
1210                 // Go through the array, translating each of the items to their
1211                 // new value (or values).
1212                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1213                         var value = callback( elems[ i ], i );
1214
1215                         if ( value != null )
1216                                 ret[ ret.length ] = value;
1217                 }
1218
1219                 return ret.concat.apply( [], ret );
1220         }
1221 });
1222
1223 var userAgent = navigator.userAgent.toLowerCase();
1224
1225 // Figure out what browser is being used
1226 jQuery.browser = {
1227         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
1228         safari: /webkit/.test( userAgent ),
1229         opera: /opera/.test( userAgent ),
1230         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1231         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1232 };
1233
1234 var styleFloat = jQuery.browser.msie ?
1235         "styleFloat" :
1236         "cssFloat";
1237
1238 jQuery.extend({
1239         // Check to see if the W3C box model is being used
1240         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1241
1242         props: {
1243                 "for": "htmlFor",
1244                 "class": "className",
1245                 "float": styleFloat,
1246                 cssFloat: styleFloat,
1247                 styleFloat: styleFloat,
1248                 readonly: "readOnly",
1249                 maxlength: "maxLength",
1250                 cellspacing: "cellSpacing",
1251                 rowspan: "rowSpan"
1252         }
1253 });
1254
1255 jQuery.each({
1256         parent: function(elem){return elem.parentNode;},
1257         parents: function(elem){return jQuery.dir(elem,"parentNode");},
1258         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
1259         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
1260         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
1261         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
1262         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
1263         children: function(elem){return jQuery.sibling(elem.firstChild);},
1264         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
1265 }, function(name, fn){
1266         jQuery.fn[ name ] = function( selector ) {
1267                 var ret = jQuery.map( this, fn );
1268
1269                 if ( selector && typeof selector == "string" )
1270                         ret = jQuery.multiFilter( selector, ret );
1271
1272                 return this.pushStack( jQuery.unique( ret ) );
1273         };
1274 });
1275
1276 jQuery.each({
1277         appendTo: "append",
1278         prependTo: "prepend",
1279         insertBefore: "before",
1280         insertAfter: "after",
1281         replaceAll: "replaceWith"
1282 }, function(name, original){
1283         jQuery.fn[ name ] = function() {
1284                 var args = arguments;
1285
1286                 return this.each(function(){
1287                         for ( var i = 0, length = args.length; i < length; i++ )
1288                                 jQuery( args[ i ] )[ original ]( this );
1289                 });
1290         };
1291 });
1292
1293 jQuery.each({
1294         removeAttr: function( name ) {
1295                 jQuery.attr( this, name, "" );
1296                 if (this.nodeType == 1)
1297                         this.removeAttribute( name );
1298         },
1299
1300         addClass: function( classNames ) {
1301                 jQuery.className.add( this, classNames );
1302         },
1303
1304         removeClass: function( classNames ) {
1305                 jQuery.className.remove( this, classNames );
1306         },
1307
1308         toggleClass: function( classNames ) {
1309                 jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
1310         },
1311
1312         remove: function( selector ) {
1313                 if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
1314                         // Prevent memory leaks
1315                         jQuery( "*", this ).add([this]).each(function(){
1316                                 jQuery.event.remove(this);
1317                                 jQuery.removeData(this);
1318                         });
1319                         if (this.parentNode)
1320                                 this.parentNode.removeChild( this );
1321                 }
1322         },
1323
1324         empty: function() {
1325                 // Remove element nodes and prevent memory leaks
1326                 jQuery( ">*", this ).remove();
1327
1328                 // Remove any remaining nodes
1329                 while ( this.firstChild )
1330                         this.removeChild( this.firstChild );
1331         }
1332 }, function(name, fn){
1333         jQuery.fn[ name ] = function(){
1334                 return this.each( fn, arguments );
1335         };
1336 });
1337
1338 jQuery.each([ "Height", "Width" ], function(i, name){
1339         var type = name.toLowerCase();
1340
1341         jQuery.fn[ type ] = function( size ) {
1342                 // Get window width or height
1343                 return this[0] == window ?
1344                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1345                         jQuery.browser.opera && document.body[ "client" + name ] ||
1346
1347                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1348                         jQuery.browser.safari && window[ "inner" + name ] ||
1349
1350                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1351                         document.compatMode == "CSS1Compat" && document.documentElement[ "client" + name ] || document.body[ "client" + name ] :
1352
1353                         // Get document width or height
1354                         this[0] == document ?
1355                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater
1356                                 Math.max(
1357                                         Math.max(document.body["scroll" + name], document.documentElement["scroll" + name]),
1358                                         Math.max(document.body["offset" + name], document.documentElement["offset" + name])
1359                                 ) :
1360
1361                                 // Get or set width or height on the element
1362                                 size == undefined ?
1363                                         // Get width or height on the element
1364                                         (this.length ? jQuery.css( this[0], type ) : null) :
1365
1366                                         // Set the width or height on the element (default to pixels if value is unitless)
1367                                         this.css( type, size.constructor == String ? size : size + "px" );
1368         };
1369 });
1370
1371 // Helper function used by the dimensions and offset modules
1372 function num(elem, prop) {
1373         return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
1374 }