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