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 if ( window.jQuery )
  14         var _jQuery = window.jQuery;
  15
  16 var jQuery = window.jQuery = function( selector, context ) {
  17         // The jQuery object is actually just the init constructor 'enhanced'
  18         return new jQuery.prototype.init( selector, context );
  19 };
  20
  21 // Map over the $ in case of overwrite
  22 if ( window.$ )
  23         var _$ = window.$;
  24
  25 // Map the jQuery namespace to the '$' one
  26 window.$ = jQuery;
  27
  28 // A simple way to check for HTML strings or ID strings
  29 // (both of which we optimize for)
  30 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;
  31
  32 // Is it a simple selector
  33 var isSimple = /^.[^:#\[\.]*$/;
  34
  35 jQuery.fn = jQuery.prototype = {
  36         init: function( selector, context ) {
  37                 // Make sure that a selection was provided
  38                 selector = selector || document;
  39
  40                 // Handle $(DOMElement)
  41                 if ( selector.nodeType ) {
  42                         this[0] = selector;
  43                         this.length = 1;
  44                         return this;
  45
  46                 // Handle HTML strings
  47                 } else if ( typeof selector == "string" ) {
  48                         // Are we dealing with HTML string or an ID?
  49                         var match = quickExpr.exec( selector );
  50
  51                         // Verify a match, and that no context was specified for #id
  52                         if ( match && (match[1] || !context) ) {
  53
  54                                 // HANDLE: $(html) -> $(array)
  55                                 if ( match[1] )
  56                                         selector = jQuery.clean( [ match[1] ], context );
  57
  58                                 // HANDLE: $("#id")
  59                                 else {
  60                                         var elem = document.getElementById( match[3] );
  61
  62                                         // Make sure an element was located
  63                                         if ( elem )
  64                                                 // Handle the case where IE and Opera return items
  65                                                 // by name instead of ID
  66                                                 if ( elem.id != match[3] )
  67                                                         return jQuery().find( selector );
  68
  69                                                 // Otherwise, we inject the element directly into the jQuery object
  70                                                 else {
  71                                                         this[0] = elem;
  72                                                         this.length = 1;
  73                                                         return this;
  74                                                 }
  75
  76                                         else
  77                                                 selector = [];
  78                                 }
  79
  80                         // HANDLE: $(expr, [context])
  81                         // (which is just equivalent to: $(content).find(expr)
  82                         } else
  83                                 return new jQuery( context ).find( selector );
  84
  85                 // HANDLE: $(function)
  86                 // Shortcut for document ready
  87                 } else if ( jQuery.isFunction( selector ) )
  88                         return new jQuery( document )[ jQuery.fn.ready ? "ready" : "load" ]( selector );
  89
  90                 return this.setArray(jQuery.makeArray(selector));
  91         },
  92
  93         // The current version of jQuery being used
  94         jquery: "@VERSION",
  95
  96         // The number of elements contained in the matched element set
  97         size: function() {
  98                 return this.length;
  99         },
 100
 101         // The number of elements contained in the matched element set
 102         length: 0,
 103
 104         // Get the Nth element in the matched element set OR
 105         // Get the whole matched element set as a clean array
 106         get: function( num ) {
 107                 return num == undefined ?
 108
 109                         // Return a 'clean' array
 110                         jQuery.makeArray( this ) :
 111
 112                         // Return just the object
 113                         this[ num ];
 114         },
 115
 116         // Take an array of elements and push it onto the stack
 117         // (returning the new matched element set)
 118         pushStack: function( elems ) {
 119                 // Build a new jQuery matched element set
 120                 var ret = jQuery( elems );
 121
 122                 // Add the old object onto the stack (as a reference)
 123                 ret.prevObject = this;
 124
 125                 // Return the newly-formed element set
 126                 return ret;
 127         },
 128
 129         // Force the current matched set of elements to become
 130         // the specified array of elements (destroying the stack in the process)
 131         // You should use pushStack() in order to do this, but maintain the stack
 132         setArray: function( elems ) {
 133                 // Resetting the length to 0, then using the native Array push
 134                 // is a super-fast way to populate an object with array-like properties
 135                 this.length = 0;
 136                 Array.prototype.push.apply( this, elems );
 137
 138                 return this;
 139         },
 140
 141         // Execute a callback for every element in the matched set.
 142         // (You can seed the arguments with an array of args, but this is
 143         // only used internally.)
 144         each: function( callback, args ) {
 145                 return jQuery.each( this, callback, args );
 146         },
 147
 148         // Determine the position of an element within
 149         // the matched set of elements
 150         index: function( elem ) {
 151                 var ret = -1;
 152
 153                 // Locate the position of the desired element
 154                 this.each(function(i){
 155                         if ( this == elem )
 156                                 ret = i;
 157                 });
 158
 159                 return ret;
 160         },
 161
 162         attr: function( name, value, type ) {
 163                 var options = name;
 164
 165                 // Look for the case where we're accessing a style value
 166                 if ( name.constructor == String )
 167                         if ( value == undefined )
 168                                 return this.length && jQuery[ type || "attr" ]( this[0], name ) || undefined;
 169
 170                         else {
 171                                 options = {};
 172                                 options[ name ] = value;
 173                         }
 174
 175                 // Check to see if we're setting style values
 176                 return this.each(function(i){
 177                         // Set all the styles
 178                         for ( name in options )
 179                                 jQuery.attr(
 180                                         type ?
 181                                                 this.style :
 182                                                 this,
 183                                         name, jQuery.prop( this, options[ name ], type, i, name )
 184                                 );
 185                 });
 186         },
 187
 188         css: function( key, value ) {
 189                 // ignore negative width and height values
 190                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 191                         value = undefined;
 192                 return this.attr( key, value, "curCSS" );
 193         },
 194
 195         text: function( text ) {
 196                 if ( typeof text != "object" && text != null )
 197                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 198
 199                 var ret = "";
 200
 201                 jQuery.each( text || this, function(){
 202                         jQuery.each( this.childNodes, function(){
 203                                 if ( this.nodeType != 8 )
 204                                         ret += this.nodeType != 1 ?
 205                                                 this.nodeValue :
 206                                                 jQuery.fn.text( [ this ] );
 207                         });
 208                 });
 209
 210                 return ret;
 211         },
 212
 213         wrapAll: function( html ) {
 214                 if ( this[0] )
 215                         // The elements to wrap the target around
 216                         jQuery( html, this[0].ownerDocument )
 217                                 .clone()
 218                                 .insertBefore( this[0] )
 219                                 .map(function(){
 220                                         var elem = this;
 221
 222                                         while ( elem.firstChild )
 223                                                 elem = elem.firstChild;
 224
 225                                         return elem;
 226                                 })
 227                                 .append(this);
 228
 229                 return this;
 230         },
 231
 232         wrapInner: function( html ) {
 233                 return this.each(function(){
 234                         jQuery( this ).contents().wrapAll( html );
 235                 });
 236         },
 237
 238         wrap: function( html ) {
 239                 return this.each(function(){
 240                         jQuery( this ).wrapAll( html );
 241                 });
 242         },
 243
 244         append: function() {
 245                 return this.domManip(arguments, true, false, function(elem){
 246                         if (this.nodeType == 1)
 247                                 this.appendChild( elem );
 248                 });
 249         },
 250
 251         prepend: function() {
 252                 return this.domManip(arguments, true, true, function(elem){
 253                         if (this.nodeType == 1)
 254                                 this.insertBefore( elem, this.firstChild );
 255                 });
 256         },
 257
 258         before: function() {
 259                 return this.domManip(arguments, false, false, function(elem){
 260                         this.parentNode.insertBefore( elem, this );
 261                 });
 262         },
 263
 264         after: function() {
 265                 return this.domManip(arguments, false, true, function(elem){
 266                         this.parentNode.insertBefore( elem, this.nextSibling );
 267                 });
 268         },
 269
 270         end: function() {
 271                 return this.prevObject || jQuery( [] );
 272         },
 273
 274         find: function( selector ) {
 275                 var elems = jQuery.map(this, function(elem){
 276                         return jQuery.find( selector, elem );
 277                 });
 278
 279                 return this.pushStack( /[^+>] [^+>]/.test( selector ) || selector.indexOf("..") > -1 ?
 280                         jQuery.unique( elems ) :
 281                         elems );
 282         },
 283
 284         clone: function( events ) {
 285                 // Do the clone
 286                 var ret = this.map(function(){
 287                         if ( jQuery.browser.msie && !jQuery.isXMLDoc(this) ) {
 288                                 // IE copies events bound via attachEvent when
 289                                 // using cloneNode. Calling detachEvent on the
 290                                 // clone will also remove the events from the orignal
 291                                 // In order to get around this, we use innerHTML.
 292                                 // Unfortunately, this means some modifications to
 293                                 // attributes in IE that are actually only stored
 294                                 // as properties will not be copied (such as the
 295                                 // the name attribute on an input).
 296                                 var clone = this.cloneNode(true),
 297                                         container = document.createElement("div");
 298                                 container.appendChild(clone);
 299                                 return jQuery.clean([container.innerHTML])[0];
 300                         } else
 301                                 return this.cloneNode(true);
 302                 });
 303
 304                 // Need to set the expando to null on the cloned set if it exists
 305                 // removeData doesn't work here, IE removes it from the original as well
 306                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 307                 var clone = ret.find("*").andSelf().each(function(){
 308                         if ( this[ expando ] != undefined )
 309                                 this[ expando ] = null;
 310                 });
 311
 312                 // Copy the events from the original to the clone
 313                 if ( events === true )
 314                         this.find("*").andSelf().each(function(i){
 315                                 if (this.nodeType == 3)
 316                                         return;
 317                                 var events = jQuery.data( this, "events" );
 318
 319                                 for ( var type in events )
 320                                         for ( var handler in events[ type ] )
 321                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 322                         });
 323
 324                 // Return the cloned set
 325                 return ret;
 326         },
 327
 328         filter: function( selector ) {
 329                 return this.pushStack(
 330                         jQuery.isFunction( selector ) &&
 331                         jQuery.grep(this, function(elem, i){
 332                                 return selector.call( elem, i );
 333                         }) ||
 334
 335                         jQuery.multiFilter( selector, this ) );
 336         },
 337
 338         not: function( selector ) {
 339                 if ( selector.constructor == String )
 340                         // test special case where just one selector is passed in
 341                         if ( isSimple.test( selector ) )
 342                                 return this.pushStack( jQuery.multiFilter( selector, this, true ) );
 343                         else
 344                                 selector = jQuery.multiFilter( selector, this );
 345
 346                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 347                 return this.filter(function() {
 348                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 349                 });
 350         },
 351
 352         add: function( selector ) {
 353                 return !selector ? this : this.pushStack( jQuery.merge(
 354                         this.get(),
 355                         selector.constructor == String ?
 356                                 jQuery( selector ).get() :
 357                                 selector.length != undefined && (!selector.nodeName || jQuery.nodeName(selector, "form")) ?
 358                                         selector : [selector] ) );
 359         },
 360
 361         is: function( selector ) {
 362                 return selector ?
 363                         jQuery.multiFilter( selector, this ).length > 0 :
 364                         false;
 365         },
 366
 367         hasClass: function( selector ) {
 368                 return this.is( "." + selector );
 369         },
 370
 371         val: function( value ) {
 372                 if ( value == undefined ) {
 373
 374                         if ( this.length ) {
 375                                 var elem = this[0];
 376
 377                                 // We need to handle select boxes special
 378                                 if ( jQuery.nodeName( elem, "select" ) ) {
 379                                         var index = elem.selectedIndex,
 380                                                 values = [],
 381                                                 options = elem.options,
 382                                                 one = elem.type == "select-one";
 383
 384                                         // Nothing was selected
 385                                         if ( index < 0 )
 386                                                 return null;
 387
 388                                         // Loop through all the selected options
 389                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 390                                                 var option = options[ i ];
 391
 392                                                 if ( option.selected ) {
 393                                                         // Get the specifc value for the option
 394                                                         value = jQuery.browser.msie && !option.attributes.value.specified ? option.text : option.value;
 395
 396                                                         // We don't need an array for one selects
 397                                                         if ( one )
 398                                                                 return value;
 399
 400                                                         // Multi-Selects return an array
 401                                                         values.push( value );
 402                                                 }
 403                                         }
 404
 405                                         return values;
 406
 407                                 // Everything else, we just grab the value
 408                                 } else
 409                                         return (this[0].value || "").replace(/\r/g, "");
 410
 411                         }
 412
 413                         return undefined;
 414                 }
 415
 416                 return this.each(function(){
 417                         if ( this.nodeType != 1 )
 418                                 return;
 419
 420                         if ( value.constructor == Array && /radio|checkbox/.test( this.type ) )
 421                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 422                                         jQuery.inArray(this.name, value) >= 0);
 423
 424                         else if ( jQuery.nodeName( this, "select" ) ) {
 425                                 var values = value.constructor == Array ?
 426                                         value :
 427                                         [ value ];
 428
 429                                 jQuery( "option", this ).each(function(){
 430                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 431                                                 jQuery.inArray( this.text, values ) >= 0);
 432                                 });
 433
 434                                 if ( !values.length )
 435                                         this.selectedIndex = -1;
 436
 437                         } else
 438                                 this.value = value;
 439                 });
 440         },
 441
 442         html: function( value ) {
 443                 return value == undefined ?
 444                         (this.length ?
 445                                 this[0].innerHTML :
 446                                 null) :
 447                         this.empty().append( value );
 448         },
 449
 450         replaceWith: function( value ) {
 451                 return this.after( value ).remove();
 452         },
 453
 454         eq: function( i ) {
 455                 return this.slice( i, i + 1 );
 456         },
 457
 458         slice: function() {
 459                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 460         },
 461
 462         map: function( callback ) {
 463                 return this.pushStack( jQuery.map(this, function(elem, i){
 464                         return callback.call( elem, i, elem );
 465                 }));
 466         },
 467
 468         andSelf: function() {
 469                 return this.add( this.prevObject );
 470         },
 471
 472         data: function( key, value ){
 473                 var parts = key.split(".");
 474                 parts[1] = parts[1] ? "." + parts[1] : "";
 475
 476                 if ( value == null ) {
 477                         var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);
 478
 479                         if ( data == undefined && this.length )
 480                                 data = jQuery.data( this[0], key );
 481
 482                         return data == null && parts[1] ?
 483                                 this.data( parts[0] ) :
 484                                 data;
 485                 } else
 486                         return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function(){
 487                                 jQuery.data( this, key, value );
 488                         });
 489         },
 490
 491         removeData: function( key ){
 492                 return this.each(function(){
 493                         jQuery.removeData( this, key );
 494                 });
 495         },
 496
 497         domManip: function( args, table, reverse, callback ) {
 498                 var clone = this.length > 1, elems;
 499
 500                 return this.each(function(){
 501                         if ( !elems ) {
 502                                 elems = jQuery.clean( args, this.ownerDocument );
 503
 504                                 if ( reverse )
 505                                         elems.reverse();
 506                         }
 507
 508                         var obj = this;
 509
 510                         if ( table && jQuery.nodeName( this, "table" ) && jQuery.nodeName( elems[0], "tr" ) )
 511                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild( this.ownerDocument.createElement("tbody") );
 512
 513                         var scripts = jQuery( [] );
 514
 515                         jQuery.each(elems, function(){
 516                                 var elem = clone ?
 517                                         jQuery( this ).clone( true )[0] :
 518                                         this;
 519
 520                                 // execute all scripts after the elements have been injected
 521                                 if ( jQuery.nodeName( elem, "script" ) ) {
 522                                         scripts = scripts.add( elem );
 523                                 } else {
 524                                         // Remove any inner scripts for later evaluation
 525                                         if ( elem.nodeType == 1 )
 526                                                 scripts = scripts.add( jQuery( "script", elem ).remove() );
 527
 528                                         // Inject the elements into the document
 529                                         callback.call( obj, elem );
 530                                 }
 531                         });
 532
 533                         scripts.each( evalScript );
 534                 });
 535         }
 536 };
 537
 538 // Give the init function the jQuery prototype for later instantiation
 539 jQuery.prototype.init.prototype = jQuery.prototype;
 540
 541 function evalScript( i, elem ) {
 542         if ( elem.src )
 543                 jQuery.ajax({
 544                         url: elem.src,
 545                         async: false,
 546                         dataType: "script"
 547                 });
 548
 549         else
 550                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 551
 552         if ( elem.parentNode )
 553                 elem.parentNode.removeChild( elem );
 554 }
 555
 556 jQuery.extend = jQuery.fn.extend = function() {
 557         // copy reference to target object
 558         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 559
 560         // Handle a deep copy situation
 561         if ( target.constructor == Boolean ) {
 562                 deep = target;
 563                 target = arguments[1] || {};
 564                 // skip the boolean and the target
 565                 i = 2;
 566         }
 567
 568         // Handle case when target is a string or something (possible in deep copy)
 569         if ( typeof target != "object" && typeof target != "function" )
 570                 target = {};
 571
 572         // extend jQuery itself if only one argument is passed
 573         if ( length == 1 ) {
 574                 target = this;
 575                 i = 0;
 576         }
 577
 578         for ( ; i < length; i++ )
 579                 // Only deal with non-null/undefined values
 580                 if ( (options = arguments[ i ]) != null )
 581                         // Extend the base object
 582                         for ( var name in options ) {
 583                                 // Prevent never-ending loop
 584                                 if ( target === options[ name ] )
 585                                         continue;
 586
 587                                 // Recurse if we're merging object values
 588                                 if ( deep && options[ name ] && typeof options[ name ] == "object" && target[ name ] && !options[ name ].nodeType )
 589                                         target[ name ] = jQuery.extend( deep, target[ name ], options[ name ] );
 590
 591                                 // Don't bring in undefined values
 592                                 else if ( options[ name ] != undefined )
 593                                         target[ name ] = options[ name ];
 594
 595                         }
 596
 597         // Return the modified object
 598         return target;
 599 };
 600
 601 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, windowData = {};
 602
 603 // exclude the following css properties to add px
 604 var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 605 // cache getComputedStyle
 606 var getComputedStyle = document.defaultView && document.defaultView.getComputedStyle;
 607
 608 jQuery.extend({
 609         noConflict: function( deep ) {
 610                 window.$ = _$;
 611
 612                 if ( deep )
 613                         window.jQuery = _jQuery;
 614
 615                 return jQuery;
 616         },
 617
 618         // See test/unit/core.js for details concerning this function.
 619         isFunction: function( fn ) {
 620                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 621                         fn.constructor != Array && /function/i.test( fn + "" );
 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                         head.appendChild( script );
 647                         head.removeChild( script );
 648                 }
 649         },
 650
 651         nodeName: function( elem, name ) {
 652                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 653         },
 654
 655         cache: {},
 656
 657         data: function( elem, name, data ) {
 658                 elem = elem == window ?
 659                         windowData :
 660                         elem;
 661
 662                 var id = elem[ expando ];
 663
 664                 // Compute a unique ID for the element
 665                 if ( !id )
 666                         id = elem[ expando ] = ++uuid;
 667
 668                 // Only generate the data cache if we're
 669                 // trying to access or manipulate it
 670                 if ( name && !jQuery.cache[ id ] )
 671                         jQuery.cache[ id ] = {};
 672
 673                 // Prevent overriding the named cache with undefined values
 674                 if ( data != undefined )
 675                         jQuery.cache[ id ][ name ] = data;
 676
 677                 // Return the named cache data, or the ID for the element
 678                 return name ?
 679                         jQuery.cache[ id ][ name ] :
 680                         id;
 681         },
 682
 683         removeData: function( elem, name ) {
 684                 elem = elem == window ?
 685                         windowData :
 686                         elem;
 687
 688                 var id = elem[ expando ];
 689
 690                 // If we want to remove a specific section of the element's data
 691                 if ( name ) {
 692                         if ( jQuery.cache[ id ] ) {
 693                                 // Remove the section of cache data
 694                                 delete jQuery.cache[ id ][ name ];
 695
 696                                 // If we've removed all the data, remove the element's cache
 697                                 name = "";
 698
 699                                 for ( name in jQuery.cache[ id ] )
 700                                         break;
 701
 702                                 if ( !name )
 703                                         jQuery.removeData( elem );
 704                         }
 705
 706                 // Otherwise, we want to remove all of the element's data
 707                 } else {
 708                         // Clean up the element expando
 709                         try {
 710                                 delete elem[ expando ];
 711                         } catch(e){
 712                                 // IE has trouble directly removing the expando
 713                                 // but it's ok with using removeAttribute
 714                                 if ( elem.removeAttribute )
 715                                         elem.removeAttribute( expando );
 716                         }
 717
 718                         // Completely remove the data cache
 719                         delete jQuery.cache[ id ];
 720                 }
 721         },
 722
 723         // args is for internal usage only
 724         each: function( object, callback, args ) {
 725                 if ( args ) {
 726                         if ( object.length == undefined ) {
 727                                 for ( var name in object )
 728                                         if ( callback.apply( object[ name ], args ) === false )
 729                                                 break;
 730                         } else
 731                                 for ( var i = 0, length = object.length; i < length; i++ )
 732                                         if ( callback.apply( object[ i ], args ) === false )
 733                                                 break;
 734
 735                 // A special, fast, case for the most common use of each
 736                 } else {
 737                         if ( object.length == undefined ) {
 738                                 for ( var name in object )
 739                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 740                                                 break;
 741                         } else
 742                                 for ( var i = 0, length = object.length, value = object[0];
 743                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 744                 }
 745
 746                 return object;
 747         },
 748
 749         prop: function( elem, value, type, i, name ) {
 750                         // Handle executable functions
 751                         if ( jQuery.isFunction( value ) )
 752                                 value = value.call( elem, i );
 753
 754                         // Handle passing in a number to a CSS property
 755                         return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 756                                 value + "px" :
 757                                 value;
 758         },
 759
 760         className: {
 761                 // internal only, use addClass("class")
 762                 add: function( elem, classNames ) {
 763                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 764                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 765                                         elem.className += (elem.className ? " " : "") + className;
 766                         });
 767                 },
 768
 769                 // internal only, use removeClass("class")
 770                 remove: function( elem, classNames ) {
 771                         if (elem.nodeType == 1)
 772                                 elem.className = classNames != undefined ?
 773                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 774                                                 return !jQuery.className.has( classNames, className );
 775                                         }).join(" ") :
 776                                         "";
 777                 },
 778
 779                 // internal only, use is(".class")
 780                 has: function( elem, className ) {
 781                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 782                 }
 783         },
 784
 785         // A method for quickly swapping in/out CSS properties to get correct calculations
 786         swap: function( elem, options, callback ) {
 787                 var old = {};
 788                 // Remember the old values, and insert the new ones
 789                 for ( var name in options ) {
 790                         old[ name ] = elem.style[ name ];
 791                         elem.style[ name ] = options[ name ];
 792                 }
 793
 794                 callback.call( elem );
 795
 796                 // Revert the old values
 797                 for ( var name in options )
 798                         elem.style[ name ] = old[ name ];
 799         },
 800
 801         css: function( elem, name, force ) {
 802                 if ( name == "width" || name == "height" ) {
 803                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 804
 805                         function getWH() {
 806                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 807                                 var padding = 0, border = 0;
 808                                 jQuery.each( which, function() {
 809                                         padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 810                                         border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 811                                 });
 812                                 val -= Math.round(padding + border);
 813                         }
 814
 815                         if ( jQuery(elem).is(":visible") )
 816                                 getWH();
 817                         else
 818                                 jQuery.swap( elem, props, getWH );
 819
 820                         return Math.max(0, val);
 821                 }
 822
 823                 return jQuery.curCSS( elem, name, force );
 824         },
 825
 826         curCSS: function( elem, name, force ) {
 827                 var ret;
 828
 829                 // A helper method for determining if an element's values are broken
 830                 function color( elem ) {
 831                         if ( !jQuery.browser.safari )
 832                                 return false;
 833
 834                         // getComputedStyle is cached
 835                         var ret = getComputedStyle( elem, null );
 836                         return !ret || ret.getPropertyValue("color") == "";
 837                 }
 838
 839                 // We need to handle opacity special in IE
 840                 if ( name == "opacity" && jQuery.browser.msie ) {
 841                         ret = jQuery.attr( elem.style, "opacity" );
 842
 843                         return ret == "" ?
 844                                 "1" :
 845                                 ret;
 846                 }
 847                 // Opera sometimes will give the wrong display answer, this fixes it, see #2037
 848                 if ( jQuery.browser.opera && name == "display" ) {
 849                         var save = elem.style.outline;
 850                         elem.style.outline = "0 solid black";
 851                         elem.style.outline = save;
 852                 }
 853
 854                 // Make sure we're using the right name for getting the float value
 855                 if ( name.match( /float/i ) )
 856                         name = styleFloat;
 857
 858                 if ( !force && elem.style && elem.style[ name ] )
 859                         ret = elem.style[ name ];
 860
 861                 else if ( getComputedStyle ) {
 862
 863                         // Only "float" is needed here
 864                         if ( name.match( /float/i ) )
 865                                 name = "float";
 866
 867                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 868
 869                         var computedStyle = getComputedStyle( elem, null );
 870
 871                         if ( computedStyle && !color( elem ) )
 872                                 ret = computedStyle.getPropertyValue( name );
 873
 874                         // If the element isn't reporting its values properly in Safari
 875                         // then some display: none elements are involved
 876                         else {
 877                                 var swap = [], stack = [];
 878
 879                                 // Locate all of the parent display: none elements
 880                                 for ( var a = elem; a && color(a); a = a.parentNode )
 881                                         stack.unshift(a);
 882
 883                                 // Go through and make them visible, but in reverse
 884                                 // (It would be better if we knew the exact display type that they had)
 885                                 for ( var i = 0; i < stack.length; i++ )
 886                                         if ( color( stack[ i ] ) ) {
 887                                                 swap[ i ] = stack[ i ].style.display;
 888                                                 stack[ i ].style.display = "block";
 889                                         }
 890
 891                                 // Since we flip the display style, we have to handle that
 892                                 // one special, otherwise get the value
 893                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 894                                         "none" :
 895                                         ( computedStyle && computedStyle.getPropertyValue( name ) ) || "";
 896
 897                                 // Finally, revert the display styles back
 898                                 for ( var i = 0; i < swap.length; i++ )
 899                                         if ( swap[ i ] != null )
 900                                                 stack[ i ].style.display = swap[ i ];
 901                         }
 902
 903                         // We should always get a number back from opacity
 904                         if ( name == "opacity" && ret == "" )
 905                                 ret = "1";
 906
 907                 } else if ( elem.currentStyle ) {
 908                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 909                                 return letter.toUpperCase();
 910                         });
 911
 912                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 913
 914                         // From the awesome hack by Dean Edwards
 915                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 916
 917                         // If we're not dealing with a regular pixel number
 918                         // but a number that has a weird ending, we need to convert it to pixels
 919                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 920                                 // Remember the original values
 921                                 var style = elem.style.left, runtimeStyle = elem.runtimeStyle.left;
 922
 923                                 // Put in the new values to get a computed value out
 924                                 elem.runtimeStyle.left = elem.currentStyle.left;
 925                                 elem.style.left = ret || 0;
 926                                 ret = elem.style.pixelLeft + "px";
 927
 928                                 // Revert the changed values
 929                                 elem.style.left = style;
 930                                 elem.runtimeStyle.left = runtimeStyle;
 931                         }
 932                 }
 933
 934                 return ret;
 935         },
 936
 937         clean: function( elems, context ) {
 938                 var ret = [];
 939                 context = context || document;
 940                 // !context.createElement fails in IE with an error but returns typeof 'object'
 941                 if (typeof context.createElement == 'undefined')
 942                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 943
 944                 jQuery.each(elems, function(i, elem){
 945                         if ( !elem )
 946                                 return;
 947
 948                         if ( elem.constructor == Number )
 949                                 elem = elem.toString();
 950
 951                         // Convert html string into DOM nodes
 952                         if ( typeof elem == "string" ) {
 953                                 // Fix "XHTML"-style tags in all browsers
 954                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 955                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 956                                                 all :
 957                                                 front + "></" + tag + ">";
 958                                 });
 959
 960                                 // Trim whitespace, otherwise indexOf won't work as expected
 961                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 962
 963                                 var wrap =
 964                                         // option or optgroup
 965                                         !tags.indexOf("<opt") &&
 966                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 967
 968                                         !tags.indexOf("<leg") &&
 969                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 970
 971                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 972                                         [ 1, "<table>", "</table>" ] ||
 973
 974                                         !tags.indexOf("<tr") &&
 975                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 976
 977                                         // <thead> matched above
 978                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 979                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 980
 981                                         !tags.indexOf("<col") &&
 982                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 983
 984                                         // IE can't serialize <link> and <script> tags normally
 985                                         jQuery.browser.msie &&
 986                                         [ 1, "div<div>", "</div>" ] ||
 987
 988                                         [ 0, "", "" ];
 989
 990                                 // Go to html and back, then peel off extra wrappers
 991                                 div.innerHTML = wrap[1] + elem + wrap[2];
 992
 993                                 // Move to the right depth
 994                                 while ( wrap[0]-- )
 995                                         div = div.lastChild;
 996
 997                                 // Remove IE's autoinserted <tbody> from table fragments
 998                                 if ( jQuery.browser.msie ) {
 999
1000                                         // String was a <table>, *may* have spurious <tbody>
1001                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
1002                                                 div.firstChild && div.firstChild.childNodes :
1003
1004                                                 // String was a bare <thead> or <tfoot>
1005                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
1006                                                         div.childNodes :
1007                                                         [];
1008
1009                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
1010                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
1011                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
1012
1013                                         // IE completely kills leading whitespace when innerHTML is used
1014                                         if ( /^\s/.test( elem ) )
1015                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
1016
1017                                 }
1018
1019                                 elem = jQuery.makeArray( div.childNodes );
1020                         }
1021
1022                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
1023                                 return;
1024
1025                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
1026                                 ret.push( elem );
1027
1028                         else
1029                                 ret = jQuery.merge( ret, elem );
1030
1031                 });
1032
1033                 return ret;
1034         },
1035
1036         attr: function( elem, name, value ) {
1037                 // don't set attributes on text and comment nodes
1038                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
1039                         return undefined;
1040
1041                 var fix = jQuery.isXMLDoc( elem ) ?
1042                         {} :
1043                         jQuery.props;
1044
1045                 // Safari mis-reports the default selected property of a hidden option
1046                 // Accessing the parent's selectedIndex property fixes it
1047                 if ( name == "selected" && jQuery.browser.safari )
1048                         elem.parentNode.selectedIndex;
1049
1050                 // Certain attributes only work when accessed via the old DOM 0 way
1051                 if ( fix[ name ] ) {
1052                         if ( value != undefined )
1053                                 elem[ fix[ name ] ] = value;
1054
1055                         return elem[ fix[ name ] ];
1056
1057                 } else if ( jQuery.browser.msie && name == "style" )
1058                         return jQuery.attr( elem.style, "cssText", value );
1059
1060                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName( elem, "form" ) && (name == "action" || name == "method") )
1061                         return elem.getAttributeNode( name ).nodeValue;
1062
1063                 // IE elem.getAttribute passes even for style
1064                 else if ( elem.tagName ) {
1065
1066                         if ( value != undefined ) {
1067                                 // We can't allow the type property to be changed (since it causes problems in IE)
1068                                 if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1069                                         throw "type property can't be changed";
1070
1071                                 // convert the value to a string (all browsers do this but IE) see #1070
1072                                 elem.setAttribute( name, "" + value );
1073                         }
1074
1075                         if ( jQuery.browser.msie && /href|src/.test( name ) && !jQuery.isXMLDoc( elem ) )
1076                                 return elem.getAttribute( name, 2 );
1077
1078                         return elem.getAttribute( name );
1079
1080                 // elem is actually elem.style ... set the style
1081                 } else {
1082                         // IE actually uses filters for opacity
1083                         if ( name == "opacity" && jQuery.browser.msie ) {
1084                                 if ( value != undefined ) {
1085                                         // IE has trouble with opacity if it does not have layout
1086                                         // Force it by setting the zoom level
1087                                         elem.zoom = 1;
1088
1089                                         // Set the alpha filter to set the opacity
1090                                         elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1091                                                 (parseFloat( value ).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1092                                 }
1093
1094                                 return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1095                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() :
1096                                         "";
1097                         }
1098
1099                         name = name.replace(/-([a-z])/ig, function(all, letter){
1100                                 return letter.toUpperCase();
1101                         });
1102
1103                         if ( value != undefined )
1104                                 elem[ name ] = value;
1105
1106                         return elem[ name ];
1107                 }
1108         },
1109
1110         trim: function( text ) {
1111                 return (text || "").replace( /^\s+|\s+$/g, "" );
1112         },
1113
1114         makeArray: function( array ) {
1115                 var ret = [];
1116
1117                 if( array != undefined ){
1118                         var i = array.length;
1119                         //the window, strings and functions also have 'length'
1120                         if( i != null && !array.split && array != window && !array.call )
1121                                 while( i )
1122                                         ret[--i] = array[i];
1123                         else
1124                                 ret[0] = array;
1125                 }
1126
1127                 return ret;
1128         },
1129
1130         inArray: function( elem, array ) {
1131                 for ( var i = 0, length = array.length; i < length; i++ )
1132                         if ( array[ i ] == elem )
1133                                 return i;
1134
1135                 return -1;
1136         },
1137
1138         merge: function( first, second ) {
1139                 // We have to loop this way because IE & Opera overwrite the length
1140                 // expando of getElementsByTagName
1141
1142                 // Also, we need to make sure that the correct elements are being returned
1143                 // (IE returns comment nodes in a '*' query)
1144                 if ( jQuery.browser.msie ) {
1145                         for ( var i = 0; second[ i ]; i++ )
1146                                 if ( second[ i ].nodeType != 8 )
1147                                         first.push( second[ i ] );
1148
1149                 } else
1150                         for ( var i = 0; second[ i ]; i++ )
1151                                 first.push( second[ i ] );
1152
1153                 return first;
1154         },
1155
1156         unique: function( array ) {
1157                 var ret = [], done = {};
1158
1159                 try {
1160
1161                         for ( var i = 0, length = array.length; i < length; i++ ) {
1162                                 var id = jQuery.data( array[ i ] );
1163
1164                                 if ( !done[ id ] ) {
1165                                         done[ id ] = true;
1166                                         ret.push( array[ i ] );
1167                                 }
1168                         }
1169
1170                 } catch( e ) {
1171                         ret = array;
1172                 }
1173
1174                 return ret;
1175         },
1176
1177         grep: function( elems, callback, inv ) {
1178                 var ret = [];
1179
1180                 // Go through the array, only saving the items
1181                 // that pass the validator function
1182                 for ( var i = 0, length = elems.length; i < length; i++ )
1183                         if ( !inv && callback( elems[ i ], i ) || inv && !callback( elems[ i ], i ) )
1184                                 ret.push( elems[ i ] );
1185
1186                 return ret;
1187         },
1188
1189         map: function( elems, callback ) {
1190                 var ret = [];
1191
1192                 // Go through the array, translating each of the items to their
1193                 // new value (or values).
1194                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1195                         var value = callback( elems[ i ], i );
1196
1197                         if ( value !== null && value != undefined ) {
1198                                 if ( value.constructor != Array )
1199                                         value = [ value ];
1200
1201                                 ret = ret.concat( value );
1202                         }
1203                 }
1204
1205                 return ret;
1206         }
1207 });
1208
1209 var userAgent = navigator.userAgent.toLowerCase();
1210
1211 // Figure out what browser is being used
1212 jQuery.browser = {
1213         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1],
1214         safari: /webkit/.test( userAgent ),
1215         opera: /opera/.test( userAgent ),
1216         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1217         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1218 };
1219
1220 var styleFloat = jQuery.browser.msie ?
1221         "styleFloat" :
1222         "cssFloat";
1223
1224 jQuery.extend({
1225         // Check to see if the W3C box model is being used
1226         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1227
1228         props: {
1229                 "for": "htmlFor",
1230                 "class": "className",
1231                 "float": styleFloat,
1232                 cssFloat: styleFloat,
1233                 styleFloat: styleFloat,
1234                 innerHTML: "innerHTML",
1235                 className: "className",
1236                 value: "value",
1237                 disabled: "disabled",
1238                 checked: "checked",
1239                 readonly: "readOnly",
1240                 selected: "selected",
1241                 maxlength: "maxLength",
1242                 selectedIndex: "selectedIndex",
1243                 defaultValue: "defaultValue",
1244                 tagName: "tagName",
1245                 nodeName: "nodeName"
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 });