src/core.js

   1 /*
   2  * jQuery @VERSION - New Wave Javascript
   3  *
   4  * Copyright (c) 2007 John Resig (jquery.com)
   5  * Dual licensed under the MIT (MIT-LICENSE.txt)
   6  * and GPL (GPL-LICENSE.txt) licenses.
   7  *
   8  * $Date$
   9  * $Rev$
  10  */
  11
  12 // Map over jQuery in case of overwrite
  13 if ( window.jQuery )
  14         var _jQuery = window.jQuery;
  15
  16 var jQuery = window.jQuery = function( selector, context ) {
  17         // If the context is a namespace object, return a new object
  18         return this instanceof jQuery ?
  19                 this.init( selector, context ) :
  20                 new jQuery( selector, context );
  21 };
  22
  23 // Map over the $ in case of overwrite
  24 if ( window.$ )
  25         var _$ = window.$;
  26
  27 // Map the jQuery namespace to the '$' one
  28 window.$ = jQuery;
  29
  30 // A simple way to check for HTML strings or ID strings
  31 // (both of which we optimize for)
  32 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;
  33
  34 jQuery.fn = jQuery.prototype = {
  35         init: function( selector, context ) {
  36                 // Make sure that a selection was provided
  37                 selector = selector || document;
  38
  39                 // Handle $(DOMElement)
  40                 if ( selector.nodeType ) {
  41                         this[0] = selector;
  42                         this.length = 1;
  43                         return this;
  44
  45                 // Handle HTML strings
  46                 } else if ( typeof selector == "string" ) {
  47                         // Are we dealing with HTML string or an ID?
  48                         var match = quickExpr.exec( selector );
  49
  50                         // Verify a match, and that no context was specified for #id
  51                         if ( match && (match[1] || !context) ) {
  52
  53                                 // HANDLE: $(html) -> $(array)
  54                                 if ( match[1] )
  55                                         selector = jQuery.clean( [ match[1] ], context );
  56
  57                                 // HANDLE: $("#id")
  58                                 else {
  59                                         var elem = document.getElementById( match[3] );
  60
  61                                         // Make sure an element was located
  62                                         if ( elem )
  63                                                 // Handle the case where IE and Opera return items
  64                                                 // by name instead of ID
  65                                                 if ( elem.id != match[3] )
  66                                                         return jQuery().find( selector );
  67
  68                                                 // Otherwise, we inject the element directly into the jQuery object
  69                                                 else {
  70                                                         this[0] = elem;
  71                                                         this.length = 1;
  72                                                         return this;
  73                                                 }
  74
  75                                         else
  76                                                 selector = [];
  77                                 }
  78
  79                         // HANDLE: $(expr, [context])
  80                         // (which is just equivalent to: $(content).find(expr)
  81                         } else
  82                                 return new jQuery( context ).find( selector );
  83
  84                 // HANDLE: $(function)
  85                 // Shortcut for document ready
  86                 } else if ( jQuery.isFunction( selector ) )
  87                         return new jQuery( document )[ jQuery.fn.ready ? "ready" : "load" ]( selector );
  88
  89                 return this.setArray(
  90                         // HANDLE: $(array)
  91                         selector.constructor == Array && selector ||
  92
  93                         // HANDLE: $(arraylike)
  94                         // Watch for when an array-like object, contains DOM nodes, is passed in as the selector
  95                         (selector.jquery || selector.length && selector != window && !selector.nodeType && selector[0] != undefined && selector[0].nodeType) && jQuery.makeArray( selector ) ||
  96
  97                         // HANDLE: $(*)
  98                         [ selector ] );
  99         },
 100
 101         // The current version of jQuery being used
 102         jquery: "@VERSION",
 103
 104         // The number of elements contained in the matched element set
 105         size: function() {
 106                 return this.length;
 107         },
 108
 109         // The number of elements contained in the matched element set
 110         length: 0,
 111
 112         // Get the Nth element in the matched element set OR
 113         // Get the whole matched element set as a clean array
 114         get: function( num ) {
 115                 return num == undefined ?
 116
 117                         // Return a 'clean' array
 118                         jQuery.makeArray( this ) :
 119
 120                         // Return just the object
 121                         this[ num ];
 122         },
 123
 124         // Take an array of elements and push it onto the stack
 125         // (returning the new matched element set)
 126         pushStack: function( elems ) {
 127                 // Build a new jQuery matched element set
 128                 var ret = jQuery( elems );
 129
 130                 // Add the old object onto the stack (as a reference)
 131                 ret.prevObject = this;
 132
 133                 // Return the newly-formed element set
 134                 return ret;
 135         },
 136
 137         // Force the current matched set of elements to become
 138         // the specified array of elements (destroying the stack in the process)
 139         // You should use pushStack() in order to do this, but maintain the stack
 140         setArray: function( elems ) {
 141                 // Resetting the length to 0, then using the native Array push
 142                 // is a super-fast way to populate an object with array-like properties
 143                 this.length = 0;
 144                 Array.prototype.push.apply( this, elems );
 145
 146                 return this;
 147         },
 148
 149         // Execute a callback for every element in the matched set.
 150         // (You can seed the arguments with an array of args, but this is
 151         // only used internally.)
 152         each: function( callback, args ) {
 153                 return jQuery.each( this, callback, args );
 154         },
 155
 156         // Determine the position of an element within
 157         // the matched set of elements
 158         index: function( elem ) {
 159                 var ret = -1;
 160
 161                 // Locate the position of the desired element
 162                 this.each(function(i){
 163                         if ( this == elem )
 164                                 ret = i;
 165                 });
 166
 167                 return ret;
 168         },
 169
 170         attr: function( name, value, type ) {
 171                 var options = name;
 172
 173                 // Look for the case where we're accessing a style value
 174                 if ( name.constructor == String )
 175                         if ( value == undefined )
 176                                 return this.length && jQuery[ type || "attr" ]( this[0], name ) || undefined;
 177
 178                         else {
 179                                 options = {};
 180                                 options[ name ] = value;
 181                         }
 182
 183                 // Check to see if we're setting style values
 184                 return this.each(function(i){
 185                         // Set all the styles
 186                         for ( name in options )
 187                                 jQuery.attr(
 188                                         type ?
 189                                                 this.style :
 190                                                 this,
 191                                         name, jQuery.prop( this, options[ name ], type, i, name )
 192                                 );
 193                 });
 194         },
 195
 196         css: function( key, value ) {
 197                 // ignore negative width and height values
 198                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 199                         value = undefined;
 200                 return this.attr( key, value, "curCSS" );
 201         },
 202
 203         text: function( text ) {
 204                 if ( typeof text != "object" && text != null )
 205                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 206
 207                 var ret = "";
 208
 209                 jQuery.each( text || this, function(){
 210                         jQuery.each( this.childNodes, function(){
 211                                 if ( this.nodeType != 8 )
 212                                         ret += this.nodeType != 1 ?
 213                                                 this.nodeValue :
 214                                                 jQuery.fn.text( [ this ] );
 215                         });
 216                 });
 217
 218                 return ret;
 219         },
 220
 221         wrapAll: function( html ) {
 222                 if ( this[0] )
 223                         // The elements to wrap the target around
 224                         jQuery( html, this[0].ownerDocument )
 225                                 .clone()
 226                                 .insertBefore( this[0] )
 227                                 .map(function(){
 228                                         var elem = this;
 229
 230                                         while ( elem.firstChild )
 231                                                 elem = elem.firstChild;
 232
 233                                         return elem;
 234                                 })
 235                                 .append(this);
 236
 237                 return this;
 238         },
 239
 240         wrapInner: function( html ) {
 241                 return this.each(function(){
 242                         jQuery( this ).contents().wrapAll( html );
 243                 });
 244         },
 245
 246         wrap: function( html ) {
 247                 return this.each(function(){
 248                         jQuery( this ).wrapAll( html );
 249                 });
 250         },
 251
 252         append: function() {
 253                 return this.domManip(arguments, true, false, function(elem){
 254                         if (this.nodeType == 1)
 255                                 this.appendChild( elem );
 256                 });
 257         },
 258
 259         prepend: function() {
 260                 return this.domManip(arguments, true, true, function(elem){
 261                         if (this.nodeType == 1)
 262                                 this.insertBefore( elem, this.firstChild );
 263                 });
 264         },
 265
 266         before: function() {
 267                 return this.domManip(arguments, false, false, function(elem){
 268                         this.parentNode.insertBefore( elem, this );
 269                 });
 270         },
 271
 272         after: function() {
 273                 return this.domManip(arguments, false, true, function(elem){
 274                         this.parentNode.insertBefore( elem, this.nextSibling );
 275                 });
 276         },
 277
 278         end: function() {
 279                 return this.prevObject || jQuery( [] );
 280         },
 281
 282         find: function( selector ) {
 283                 var elems = jQuery.map(this, function(elem){
 284                         return jQuery.find( selector, elem );
 285                 });
 286
 287                 return this.pushStack( /[^+>] [^+>]/.test( selector ) || selector.indexOf("..") > -1 ?
 288                         jQuery.unique( elems ) :
 289                         elems );
 290         },
 291
 292         clone: function( events ) {
 293                 // Do the clone
 294                 var ret = this.map(function(){
 295                         return this.outerHTML ?
 296                                 jQuery( this.outerHTML )[0] :
 297                                 this.cloneNode( true );
 298                 });
 299
 300                 // Need to set the expando to null on the cloned set if it exists
 301                 // removeData doesn't work here, IE removes it from the original as well
 302                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 303                 var clone = ret.find("*").andSelf().each(function(){
 304                         if ( this[ expando ] != undefined )
 305                                 this[ expando ] = null;
 306                 });
 307
 308                 // Copy the events from the original to the clone
 309                 if ( events === true )
 310                         this.find("*").andSelf().each(function(i){
 311                                 var events = jQuery.data( this, "events" );
 312
 313                                 for ( var type in events )
 314                                         for ( var handler in events[ type ] )
 315                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 316                         });
 317
 318                 // Return the cloned set
 319                 return ret;
 320         },
 321
 322         filter: function( selector ) {
 323                 return this.pushStack(
 324                         jQuery.isFunction( selector ) &&
 325                         jQuery.grep(this, function(elem, i){
 326                                 return selector.call( elem, i );
 327                         }) ||
 328
 329                         jQuery.multiFilter( selector, this ) );
 330         },
 331
 332         not: function( selector ) {
 333                 return this.pushStack(
 334                         selector.constructor == String &&
 335                         jQuery.multiFilter( selector, this, true ) ||
 336
 337                         jQuery.grep(this, function(elem) {
 338                                 return selector.constructor == Array || selector.jquery ?
 339                                         jQuery.inArray( elem, selector ) < 0 :
 340                                         elem != selector;
 341                         }) );
 342         },
 343
 344         add: function( selector ) {
 345                 return !selector ? this : this.pushStack( jQuery.merge(
 346                         this.get(),
 347                         selector.constructor == String ?
 348                                 jQuery( selector ).get() :
 349                                 selector.length != undefined && (!selector.nodeName || jQuery.nodeName(selector, "form")) ?
 350                                         selector : [selector] ) );
 351         },
 352
 353         is: function( selector ) {
 354                 return selector ?
 355                         jQuery.multiFilter( selector, this ).length > 0 :
 356                         false;
 357         },
 358
 359         hasClass: function( selector ) {
 360                 return this.is( "." + selector );
 361         },
 362
 363         val: function( value ) {
 364                 if ( value == undefined ) {
 365
 366                         if ( this.length ) {
 367                                 var elem = this[0];
 368
 369                                 // We need to handle select boxes special
 370                                 if ( jQuery.nodeName( elem, "select" ) ) {
 371                                         var index = elem.selectedIndex,
 372                                                 values = [],
 373                                                 options = elem.options,
 374                                                 one = elem.type == "select-one";
 375
 376                                         // Nothing was selected
 377                                         if ( index < 0 )
 378                                                 return null;
 379
 380                                         // Loop through all the selected options
 381                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 382                                                 var option = options[ i ];
 383
 384                                                 if ( option.selected ) {
 385                                                         // Get the specifc value for the option
 386                                                         value = jQuery.browser.msie && !option.attributes.value.specified ? option.text : option.value;
 387
 388                                                         // We don't need an array for one selects
 389                                                         if ( one )
 390                                                                 return value;
 391
 392                                                         // Multi-Selects return an array
 393                                                         values.push( value );
 394                                                 }
 395                                         }
 396
 397                                         return values;
 398
 399                                 // Everything else, we just grab the value
 400                                 } else
 401                                         return (this[0].value || "").replace(/\r/g, "");
 402
 403                         }
 404
 405                 } else
 406                         return this.each(function(){
 407                                 if ( this.nodeType != 1 )
 408                                         return;
 409
 410                                 if ( value.constructor == Array && /radio|checkbox/.test( this.type ) )
 411                                         this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 412                                                 jQuery.inArray(this.name, value) >= 0);
 413
 414                                 else if ( jQuery.nodeName( this, "select" ) ) {
 415                                         var values = value.constructor == Array ?
 416                                                 value :
 417                                                 [ value ];
 418
 419                                         jQuery( "option", this ).each(function(){
 420                                                 this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 421                                                         jQuery.inArray( this.text, values ) >= 0);
 422                                         });
 423
 424                                         if ( !values.length )
 425                                                 this.selectedIndex = -1;
 426
 427                                 } else
 428                                         this.value = value;
 429                         });
 430         },
 431
 432         html: function( value ) {
 433                 return value == undefined ?
 434                         (this.length ?
 435                                 this[0].innerHTML :
 436                                 null) :
 437                         this.empty().append( value );
 438         },
 439
 440         replaceWith: function( value ) {
 441                 return this.after( value ).remove();
 442         },
 443
 444         eq: function( i ) {
 445                 return this.slice( i, i + 1 );
 446         },
 447
 448         slice: function() {
 449                 return this.pushStack( Array.prototype.slice.apply( this, arguments ) );
 450         },
 451
 452         map: function( callback ) {
 453                 return this.pushStack( jQuery.map(this, function(elem, i){
 454                         return callback.call( elem, i, elem );
 455                 }));
 456         },
 457
 458         andSelf: function() {
 459                 return this.add( this.prevObject );
 460         },
 461
 462         domManip: function( args, table, reverse, callback ) {
 463                 var clone = this.length > 1, elems;
 464
 465                 return this.each(function(){
 466                         if ( !elems ) {
 467                                 elems = jQuery.clean( args, this.ownerDocument );
 468
 469                                 if ( reverse )
 470                                         elems.reverse();
 471                         }
 472
 473                         var obj = this;
 474
 475                         if ( table && jQuery.nodeName( this, "table" ) && jQuery.nodeName( elems[0], "tr" ) )
 476                                 obj = this.getElementsByTagName("tbody")[0] || this.appendChild( this.ownerDocument.createElement("tbody") );
 477
 478                         var scripts = jQuery( [] );
 479
 480                         jQuery.each(elems, function(){
 481                                 var elem = clone ?
 482                                         this.cloneNode( true ) :
 483                                         this;
 484
 485                                 if ( jQuery.nodeName( elem, "script" ) ) {
 486
 487                                         // If scripts are waiting to be executed, wait on this script as well
 488                                         if ( scripts.length )
 489                                                 scripts = scripts.add( elem );
 490
 491                                         // If nothing is waiting to be executed, run immediately
 492                                         else
 493                                                 evalScript( 0, elem );
 494
 495                                 } else {
 496                                         // Remove any inner scripts for later evaluation
 497                                         if ( elem.nodeType == 1 )
 498                                                 scripts = scripts.add( jQuery( "script", elem ).remove() );
 499
 500                                         // Inject the elements into the document
 501                                         callback.call( obj, elem );
 502                                 }
 503                         });
 504
 505                         scripts.each( evalScript );
 506                 });
 507         }
 508 };
 509
 510 function evalScript( i, elem ) {
 511         if ( elem.src )
 512                 jQuery.ajax({
 513                         url: elem.src,
 514                         async: false,
 515                         dataType: "script"
 516                 });
 517
 518         else
 519                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 520
 521         if ( elem.parentNode )
 522                 elem.parentNode.removeChild( elem );
 523 }
 524
 525 jQuery.extend = jQuery.fn.extend = function() {
 526         // copy reference to target object
 527         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 528
 529         // Handle a deep copy situation
 530         if ( target.constructor == Boolean ) {
 531                 deep = target;
 532                 target = arguments[1] || {};
 533                 // skip the boolean and the target
 534                 i = 2;
 535         }
 536
 537         // Handle case when target is a string or something (possible in deep copy)
 538         if ( typeof target != "object" && typeof target != "function" )
 539                 target = {};
 540
 541         // extend jQuery itself if only one argument is passed
 542         if ( length == 1 ) {
 543                 target = this;
 544                 i = 0;
 545         }
 546
 547         for ( ; i < length; i++ )
 548                 // Only deal with non-null/undefined values
 549                 if ( (options = arguments[ i ]) != null )
 550                         // Extend the base object
 551                         for ( var name in options ) {
 552                                 // Prevent never-ending loop
 553                                 if ( target === options[ name ] )
 554                                         continue;
 555
 556                                 // Recurse if we're merging object values
 557                                 if ( deep && options[ name ] && typeof options[ name ] == "object" && target[ name ] && !options[ name ].nodeType )
 558                                         target[ name ] = jQuery.extend( target[ name ], options[ name ] );
 559
 560                                 // Don't bring in undefined values
 561                                 else if ( options[ name ] != undefined )
 562                                         target[ name ] = options[ name ];
 563
 564                         }
 565
 566         // Return the modified object
 567         return target;
 568 };
 569
 570 var expando = "jQuery" + (new Date()).getTime(), uuid = 0, windowData = {};
 571
 572 // exclude the following css properties to add px
 573 var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
 574
 575 jQuery.extend({
 576         noConflict: function( deep ) {
 577                 window.$ = _$;
 578
 579                 if ( deep )
 580                         window.jQuery = _jQuery;
 581
 582                 return jQuery;
 583         },
 584
 585         // This may seem like some crazy code, but trust me when I say that this
 586         // is the only cross-browser way to do this. --John
 587         isFunction: function( fn ) {
 588                 return !!fn && typeof fn != "string" && !fn.nodeName &&
 589                         fn.constructor != Array && /function/i.test( fn + "" );
 590         },
 591
 592         // check if an element is in a (or is an) XML document
 593         isXMLDoc: function( elem ) {
 594                 return elem.documentElement && !elem.body ||
 595                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 596         },
 597
 598         // Evalulates a script in a global context
 599         globalEval: function( data ) {
 600                 data = jQuery.trim( data );
 601
 602                 if ( data ) {
 603                         // Inspired by code by Andrea Giammarchi
 604                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 605                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 606                                 script = document.createElement("script");
 607
 608                         script.type = "text/javascript";
 609                         if ( jQuery.browser.msie )
 610                                 script.text = data;
 611                         else
 612                                 script.appendChild( document.createTextNode( data ) );
 613
 614                         head.appendChild( script );
 615                         head.removeChild( script );
 616                 }
 617         },
 618
 619         nodeName: function( elem, name ) {
 620                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 621         },
 622
 623         cache: {},
 624
 625         data: function( elem, name, data ) {
 626                 elem = elem == window ?
 627                         windowData :
 628                         elem;
 629
 630                 var id = elem[ expando ];
 631
 632                 // Compute a unique ID for the element
 633                 if ( !id )
 634                         id = elem[ expando ] = ++uuid;
 635
 636                 // Only generate the data cache if we're
 637                 // trying to access or manipulate it
 638                 if ( name && !jQuery.cache[ id ] )
 639                         jQuery.cache[ id ] = {};
 640
 641                 // Prevent overriding the named cache with undefined values
 642                 if ( data != undefined )
 643                         jQuery.cache[ id ][ name ] = data;
 644
 645                 // Return the named cache data, or the ID for the element
 646                 return name ?
 647                         jQuery.cache[ id ][ name ] :
 648                         id;
 649         },
 650
 651         removeData: function( elem, name ) {
 652                 elem = elem == window ?
 653                         windowData :
 654                         elem;
 655
 656                 var id = elem[ expando ];
 657
 658                 // If we want to remove a specific section of the element's data
 659                 if ( name ) {
 660                         if ( jQuery.cache[ id ] ) {
 661                                 // Remove the section of cache data
 662                                 delete jQuery.cache[ id ][ name ];
 663
 664                                 // If we've removed all the data, remove the element's cache
 665                                 name = "";
 666
 667                                 for ( name in jQuery.cache[ id ] )
 668                                         break;
 669
 670                                 if ( !name )
 671                                         jQuery.removeData( elem );
 672                         }
 673
 674                 // Otherwise, we want to remove all of the element's data
 675                 } else {
 676                         // Clean up the element expando
 677                         try {
 678                                 delete elem[ expando ];
 679                         } catch(e){
 680                                 // IE has trouble directly removing the expando
 681                                 // but it's ok with using removeAttribute
 682                                 if ( elem.removeAttribute )
 683                                         elem.removeAttribute( expando );
 684                         }
 685
 686                         // Completely remove the data cache
 687                         delete jQuery.cache[ id ];
 688                 }
 689         },
 690
 691         // args is for internal usage only
 692         each: function( object, callback, args ) {
 693                 if ( args ) {
 694                         if ( object.length == undefined )
 695                                 for ( var name in object )
 696                                         callback.apply( object[ name ], args );
 697                         else
 698                                 for ( var i = 0, length = object.length; i < length; i++ )
 699                                         if ( callback.apply( object[ i ], args ) === false )
 700                                                 break;
 701
 702                 // A special, fast, case for the most common use of each
 703                 } else {
 704                         if ( object.length == undefined )
 705                                 for ( var name in object )
 706                                         callback.call( object[ name ], name, object[ name ] );
 707                         else
 708                                 for ( var i = 0, length = object.length, value = object[0];
 709                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 710                 }
 711
 712                 return object;
 713         },
 714
 715         prop: function( elem, value, type, i, name ) {
 716                         // Handle executable functions
 717                         if ( jQuery.isFunction( value ) )
 718                                 value = value.call( elem, i );
 719
 720                         // Handle passing in a number to a CSS property
 721                         return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 722                                 value + "px" :
 723                                 value;
 724         },
 725
 726         className: {
 727                 // internal only, use addClass("class")
 728                 add: function( elem, classNames ) {
 729                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 730                                 if ( elem.nodeType == 1 && !jQuery.className.has( elem.className, className ) )
 731                                         elem.className += (elem.className ? " " : "") + className;
 732                         });
 733                 },
 734
 735                 // internal only, use removeClass("class")
 736                 remove: function( elem, classNames ) {
 737                         if (elem.nodeType == 1)
 738                                 elem.className = classNames != undefined ?
 739                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 740                                                 return !jQuery.className.has( classNames, className );
 741                                         }).join(" ") :
 742                                         "";
 743                 },
 744
 745                 // internal only, use is(".class")
 746                 has: function( elem, className ) {
 747                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 748                 }
 749         },
 750
 751         // A method for quickly swapping in/out CSS properties to get correct calculations
 752         swap: function( elem, options, callback ) {
 753                 // Remember the old values, and insert the new ones
 754                 for ( var name in options ) {
 755                         elem.style[ "old" + name ] = elem.style[ name ];
 756                         elem.style[ name ] = options[ name ];
 757                 }
 758
 759                 callback.call( elem );
 760
 761                 // Revert the old values
 762                 for ( var name in options )
 763                         elem.style[ name ] = elem.style[ "old" + name ];
 764         },
 765
 766         css: function( elem, name, force ) {
 767                 if ( name == "height" || name == "width" ) {
 768                         var old = {}, height, width;
 769
 770                         // Revert the padding and border widths to get the
 771                         // correct height/width values
 772                         jQuery.each([ "Top", "Bottom", "Right", "Left" ], function(){
 773                                 old[ "padding" + this ] = 0;
 774                                 old[ "border" + this + "Width" ] = 0;
 775                         });
 776
 777                         // Swap out the padding/border values temporarily
 778                         jQuery.swap( elem, old, function() {
 779
 780                                 // If the element is visible, then the calculation is easy
 781                                 if ( jQuery( elem ).is(":visible") ) {
 782                                         height = elem.offsetHeight;
 783                                         width = elem.offsetWidth;
 784
 785                                 // Otherwise, we need to flip out more values
 786                                 } else {
 787                                         elem = jQuery( elem.cloneNode(true) )
 788                                                 .find(":radio").removeAttr("checked").removeAttr("defaultChecked").end()
 789                                                 .css({
 790                                                         visibility: "hidden",
 791                                                         position: "absolute",
 792                                                         display: "block",
 793                                                         right: "0",
 794                                                         left: "0"
 795                                                 }).appendTo( elem.parentNode )[0];
 796
 797                                         var position = jQuery.css( elem.parentNode, "position" ) || "static";
 798                                         if ( position == "static" )
 799                                                 elem.parentNode.style.position = "relative";
 800
 801                                         height = elem.clientHeight;
 802                                         width = elem.clientWidth;
 803
 804                                         if ( position == "static" )
 805                                                 elem.parentNode.style.position = "static";
 806
 807                                         elem.parentNode.removeChild( elem );
 808                                 }
 809                         });
 810
 811                         return name == "height" ?
 812                                 height :
 813                                 width;
 814                 }
 815
 816                 return jQuery.curCSS( elem, name, force );
 817         },
 818
 819         curCSS: function( elem, name, force ) {
 820                 var ret;
 821
 822                 // A helper method for determining if an element's values are broken
 823                 function color( elem ) {
 824                         if ( !jQuery.browser.safari )
 825                                 return false;
 826
 827                         var ret = document.defaultView.getComputedStyle( elem, null );
 828                         return !ret || ret.getPropertyValue("color") == "";
 829                 }
 830
 831                 // We need to handle opacity special in IE
 832                 if ( name == "opacity" && jQuery.browser.msie ) {
 833                         ret = jQuery.attr( elem.style, "opacity" );
 834
 835                         return ret == "" ?
 836                                 "1" :
 837                                 ret;
 838                 }
 839
 840                 // Make sure we're using the right name for getting the float value
 841                 if ( name.match( /float/i ) )
 842                         name = styleFloat;
 843
 844                 if ( !force && elem.style[ name ] )
 845                         ret = elem.style[ name ];
 846
 847                 else if ( document.defaultView && document.defaultView.getComputedStyle ) {
 848
 849                         // Only "float" is needed here
 850                         if ( name.match( /float/i ) )
 851                                 name = "float";
 852
 853                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 854
 855                         var getComputedStyle = document.defaultView.getComputedStyle( elem, null );
 856
 857                         if ( getComputedStyle && !color( elem ) )
 858                                 ret = getComputedStyle.getPropertyValue( name );
 859
 860                         // If the element isn't reporting its values properly in Safari
 861                         // then some display: none elements are involved
 862                         else {
 863                                 var swap = [], stack = [];
 864
 865                                 // Locate all of the parent display: none elements
 866                                 for ( var a = elem; a && color(a); a = a.parentNode )
 867                                         stack.unshift(a);
 868
 869                                 // Go through and make them visible, but in reverse
 870                                 // (It would be better if we knew the exact display type that they had)
 871                                 for ( var i = 0; i < stack.length; i++ )
 872                                         if ( color( stack[ i ] ) ) {
 873                                                 swap[ i ] = stack[ i ].style.display;
 874                                                 stack[ i ].style.display = "block";
 875                                         }
 876
 877                                 // Since we flip the display style, we have to handle that
 878                                 // one special, otherwise get the value
 879                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 880                                         "none" :
 881                                         ( getComputedStyle && getComputedStyle.getPropertyValue( name ) ) || "";
 882
 883                                 // Finally, revert the display styles back
 884                                 for ( var i = 0; i < swap.length; i++ )
 885                                         if ( swap[ i ] != null )
 886                                                 stack[ i ].style.display = swap[ i ];
 887                         }
 888
 889                         // We should always get a number back from opacity
 890                         if ( name == "opacity" && ret == "" )
 891                                 ret = "1";
 892
 893                 } else if ( elem.currentStyle ) {
 894                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 895                                 return letter.toUpperCase();
 896                         });
 897
 898                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 899
 900                         // From the awesome hack by Dean Edwards
 901                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 902
 903                         // If we're not dealing with a regular pixel number
 904                         // but a number that has a weird ending, we need to convert it to pixels
 905                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 906                                 // Remember the original values
 907                                 var style = elem.style.left, runtimeStyle = elem.runtimeStyle.left;
 908
 909                                 // Put in the new values to get a computed value out
 910                                 elem.runtimeStyle.left = elem.currentStyle.left;
 911                                 elem.style.left = ret || 0;
 912                                 ret = elem.style.pixelLeft + "px";
 913
 914                                 // Revert the changed values
 915                                 elem.style.left = style;
 916                                 elem.runtimeStyle.left = runtimeStyle;
 917                         }
 918                 }
 919
 920                 return ret;
 921         },
 922
 923         clean: function( elems, context ) {
 924                 var ret = [];
 925                 context = context || document;
 926                 // !context.createElement fails in IE with an error but returns typeof 'object'
 927                 if (typeof context.createElement == 'undefined')
 928                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 929
 930                 jQuery.each(elems, function(i, elem){
 931                         if ( !elem )
 932                                 return;
 933
 934                         if ( elem.constructor == Number )
 935                                 elem = elem.toString();
 936
 937                         // Convert html string into DOM nodes
 938                         if ( typeof elem == "string" ) {
 939                                 // Fix "XHTML"-style tags in all browsers
 940                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 941                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i) ?
 942                                                 all :
 943                                                 front + "></" + tag + ">";
 944                                 });
 945
 946                                 // Trim whitespace, otherwise indexOf won't work as expected
 947                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 948
 949                                 var wrap =
 950                                         // option or optgroup
 951                                         !tags.indexOf("<opt") &&
 952                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 953
 954                                         !tags.indexOf("<leg") &&
 955                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 956
 957                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 958                                         [ 1, "<table>", "</table>" ] ||
 959
 960                                         !tags.indexOf("<tr") &&
 961                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 962
 963                                         // <thead> matched above
 964                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 965                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 966
 967                                         !tags.indexOf("<col") &&
 968                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 969
 970                                         // IE can't serialize <link> and <script> tags normally
 971                                         jQuery.browser.msie &&
 972                                         [ 1, "div<div>", "</div>" ] ||
 973
 974                                         [ 0, "", "" ];
 975
 976                                 // Go to html and back, then peel off extra wrappers
 977                                 div.innerHTML = wrap[1] + elem + wrap[2];
 978
 979                                 // Move to the right depth
 980                                 while ( wrap[0]-- )
 981                                         div = div.lastChild;
 982
 983                                 // Remove IE's autoinserted <tbody> from table fragments
 984                                 if ( jQuery.browser.msie ) {
 985
 986                                         // String was a <table>, *may* have spurious <tbody>
 987                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
 988                                                 div.firstChild && div.firstChild.childNodes :
 989
 990                                                 // String was a bare <thead> or <tfoot>
 991                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
 992                                                         div.childNodes :
 993                                                         [];
 994
 995                                         for ( var i = tbody.length - 1; i >= 0 ; --i )
 996                                                 if ( jQuery.nodeName( tbody[ i ], "tbody" ) && !tbody[ i ].childNodes.length )
 997                                                         tbody[ i ].parentNode.removeChild( tbody[ i ] );
 998
 999                                         // IE completely kills leading whitespace when innerHTML is used
1000                                         if ( /^\s/.test( elem ) )
1001                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
1002
1003                                 }
1004
1005                                 elem = jQuery.makeArray( div.childNodes );
1006                         }
1007
1008                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
1009                                 return;
1010
1011                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
1012                                 ret.push( elem );
1013
1014                         else
1015                                 ret = jQuery.merge( ret, elem );
1016
1017                 });
1018
1019                 return ret;
1020         },
1021
1022         attr: function( elem, name, value ) {
1023                 // don't set attributes on text and comment nodes
1024                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
1025                         return undefined;
1026
1027                 var fix = jQuery.isXMLDoc( elem ) ?
1028                         {} :
1029                         jQuery.props;
1030
1031                 // Safari mis-reports the default selected property of a hidden option
1032                 // Accessing the parent's selectedIndex property fixes it
1033                 if ( name == "selected" && jQuery.browser.safari )
1034                         elem.parentNode.selectedIndex;
1035
1036                 // Certain attributes only work when accessed via the old DOM 0 way
1037                 if ( fix[ name ] ) {
1038                         if ( value != undefined )
1039                                 elem[ fix[ name ] ] = value;
1040
1041                         return elem[ fix[ name ] ];
1042
1043                 } else if ( jQuery.browser.msie && name == "style" )
1044                         return jQuery.attr( elem.style, "cssText", value );
1045
1046                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName( elem, "form" ) && (name == "action" || name == "method") )
1047                         return elem.getAttributeNode( name ).nodeValue;
1048
1049                 // IE elem.getAttribute passes even for style
1050                 else if ( elem.tagName ) {
1051
1052                         if ( value != undefined ) {
1053                                 // We can't allow the type property to be changed (since it causes problems in IE)
1054                                 if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1055                                         throw "type property can't be changed";
1056
1057                                 // convert the value to a string (all browsers do this but IE) see #1070
1058                                 elem.setAttribute( name, "" + value );
1059                         }
1060
1061                         if ( jQuery.browser.msie && /href|src/.test( name ) && !jQuery.isXMLDoc( elem ) )
1062                                 return elem.getAttribute( name, 2 );
1063
1064                         return elem.getAttribute( name );
1065
1066                 // elem is actually elem.style ... set the style
1067                 } else {
1068                         // IE actually uses filters for opacity
1069                         if ( name == "opacity" && jQuery.browser.msie ) {
1070                                 if ( value != undefined ) {
1071                                         // IE has trouble with opacity if it does not have layout
1072                                         // Force it by setting the zoom level
1073                                         elem.zoom = 1;
1074
1075                                         // Set the alpha filter to set the opacity
1076                                         elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1077                                                 (parseFloat( value ).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1078                                 }
1079
1080                                 return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1081                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() :
1082                                         "";
1083                         }
1084
1085                         name = name.replace(/-([a-z])/ig, function(all, letter){
1086                                 return letter.toUpperCase();
1087                         });
1088
1089                         if ( value != undefined )
1090                                 elem[ name ] = value;
1091
1092                         return elem[ name ];
1093                 }
1094         },
1095
1096         trim: function( text ) {
1097                 return (text || "").replace( /^\s+|\s+$/g, "" );
1098         },
1099
1100         makeArray: function( array ) {
1101                 var ret = [];
1102
1103                 // Need to use typeof to fight Safari childNodes crashes
1104                 if ( typeof array != "array" )
1105                         for ( var i = 0, length = array.length; i < length; i++ )
1106                                 ret.push( array[ i ] );
1107                 else
1108                         ret = array.slice( 0 );
1109
1110                 return ret;
1111         },
1112
1113         inArray: function( elem, array ) {
1114                 for ( var i = 0, length = array.length; i < length; i++ )
1115                         if ( array[ i ] == elem )
1116                                 return i;
1117
1118                 return -1;
1119         },
1120
1121         merge: function( first, second ) {
1122                 // We have to loop this way because IE & Opera overwrite the length
1123                 // expando of getElementsByTagName
1124
1125                 // Also, we need to make sure that the correct elements are being returned
1126                 // (IE returns comment nodes in a '*' query)
1127                 if ( jQuery.browser.msie ) {
1128                         for ( var i = 0; second[ i ]; i++ )
1129                                 if ( second[ i ].nodeType != 8 )
1130                                         first.push( second[ i ] );
1131
1132                 } else
1133                         for ( var i = 0; second[ i ]; i++ )
1134                                 first.push( second[ i ] );
1135
1136                 return first;
1137         },
1138
1139         unique: function( array ) {
1140                 var ret = [], done = {};
1141
1142                 try {
1143
1144                         for ( var i = 0, length = array.length; i < length; i++ ) {
1145                                 var id = jQuery.data( array[ i ] );
1146
1147                                 if ( !done[ id ] ) {
1148                                         done[ id ] = true;
1149                                         ret.push( array[ i ] );
1150                                 }
1151                         }
1152
1153                 } catch( e ) {
1154                         ret = array;
1155                 }
1156
1157                 return ret;
1158         },
1159
1160         grep: function( elems, callback, inv ) {
1161                 // If a string is passed in for the function, make a function
1162                 // for it (a handy shortcut)
1163                 if ( typeof callback == "string" )
1164                         callback = eval("false||function(a,i){return " + callback + "}");
1165
1166                 var ret = [];
1167
1168                 // Go through the array, only saving the items
1169                 // that pass the validator function
1170                 for ( var i = 0, length = elems.length; i < length; i++ )
1171                         if ( !inv && callback( elems[ i ], i ) || inv && !callback( elems[ i ], i ) )
1172                                 ret.push( elems[ i ] );
1173
1174                 return ret;
1175         },
1176
1177         map: function( elems, callback ) {
1178                 var ret = [];
1179
1180                 // Go through the array, translating each of the items to their
1181                 // new value (or values).
1182                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1183                         var value = callback( elems[ i ], i );
1184
1185                         if ( value !== null && value != undefined ) {
1186                                 if ( value.constructor != Array )
1187                                         value = [ value ];
1188
1189                                 ret = ret.concat( value );
1190                         }
1191                 }
1192
1193                 return ret;
1194         }
1195 });
1196
1197 var userAgent = navigator.userAgent.toLowerCase();
1198
1199 // Figure out what browser is being used
1200 jQuery.browser = {
1201         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1],
1202         safari: /webkit/.test( userAgent ),
1203         opera: /opera/.test( userAgent ),
1204         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1205         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1206 };
1207
1208 var styleFloat = jQuery.browser.msie ?
1209         "styleFloat" :
1210         "cssFloat";
1211
1212 jQuery.extend({
1213         // Check to see if the W3C box model is being used
1214         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1215
1216         props: {
1217                 "for": "htmlFor",
1218                 "class": "className",
1219                 "float": styleFloat,
1220                 cssFloat: styleFloat,
1221                 styleFloat: styleFloat,
1222                 innerHTML: "innerHTML",
1223                 className: "className",
1224                 value: "value",
1225                 disabled: "disabled",
1226                 checked: "checked",
1227                 readonly: "readOnly",
1228                 selected: "selected",
1229                 maxlength: "maxLength",
1230                 selectedIndex: "selectedIndex",
1231                 defaultValue: "defaultValue",
1232                 tagName: "tagName",
1233                 nodeName: "nodeName"
1234         }
1235 });
1236
1237 jQuery.each({
1238         parent: "elem.parentNode",
1239         parents: "jQuery.dir(elem,'parentNode')",
1240         next: "jQuery.nth(elem,2,'nextSibling')",
1241         prev: "jQuery.nth(elem,2,'previousSibling')",
1242         nextAll: "jQuery.dir(elem,'nextSibling')",
1243         prevAll: "jQuery.dir(elem,'previousSibling')",
1244         siblings: "jQuery.sibling(elem.parentNode.firstChild,elem)",
1245         children: "jQuery.sibling(elem.firstChild)",
1246         contents: "jQuery.nodeName(elem,'iframe')?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes)"
1247 }, function(name, fn){
1248         fn = eval("false||function(elem){return " + fn + "}");
1249
1250         jQuery.fn[ name ] = function( selector ) {
1251                 var ret = jQuery.map( this, fn );
1252
1253                 if ( selector && typeof selector == "string" )
1254                         ret = jQuery.multiFilter( selector, ret );
1255
1256                 return this.pushStack( jQuery.unique( ret ) );
1257         };
1258 });
1259
1260 jQuery.each({
1261         appendTo: "append",
1262         prependTo: "prepend",
1263         insertBefore: "before",
1264         insertAfter: "after",
1265         replaceAll: "replaceWith"
1266 }, function(name, original){
1267         jQuery.fn[ name ] = function() {
1268                 var args = arguments;
1269
1270                 return this.each(function(){
1271                         for ( var i = 0, length = args.length; i < length; i++ )
1272                                 jQuery( args[ i ] )[ original ]( this );
1273                 });
1274         };
1275 });
1276
1277 jQuery.each({
1278         removeAttr: function( name ) {
1279                 jQuery.attr( this, name, "" );
1280                 if (this.nodeType == 1)
1281                         this.removeAttribute( name );
1282         },
1283
1284         addClass: function( classNames ) {
1285                 jQuery.className.add( this, classNames );
1286         },
1287
1288         removeClass: function( classNames ) {
1289                 jQuery.className.remove( this, classNames );
1290         },
1291
1292         toggleClass: function( classNames ) {
1293                 jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
1294         },
1295
1296         remove: function( selector ) {
1297                 if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
1298                         // Prevent memory leaks
1299                         jQuery( "*", this ).add(this).each(function(){
1300                                 jQuery.event.remove(this);
1301                                 jQuery.removeData(this);
1302                         });
1303                         if (this.parentNode)
1304                                 this.parentNode.removeChild( this );
1305                 }
1306         },
1307
1308         empty: function() {
1309                 // Remove element nodes and prevent memory leaks
1310                 jQuery( ">*", this ).remove();
1311
1312                 // Remove any remaining nodes
1313                 while ( this.firstChild )
1314                         this.removeChild( this.firstChild );
1315         }
1316 }, function(name, fn){
1317         jQuery.fn[ name ] = function(){
1318                 return this.each( fn, arguments );
1319         };
1320 });
1321
1322 jQuery.each([ "Height", "Width" ], function(i, name){
1323         var type = name.toLowerCase();
1324
1325         jQuery.fn[ type ] = function( size ) {
1326                 // Get window width or height
1327                 return this[0] == window ?
1328                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1329                         jQuery.browser.opera && document.body[ "client" + name ] ||
1330
1331                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1332                         jQuery.browser.safari && window[ "inner" + name ] ||
1333
1334                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1335                         document.compatMode == "CSS1Compat" && document.documentElement[ "client" + name ] || document.body[ "client" + name ] :
1336
1337                         // Get document width or height
1338                         this[0] == document ?
1339                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater (Mozilla reports scrollWidth the same as offsetWidth)
1340                                 Math.max( document.body[ "scroll" + name ], document.body[ "offset" + name ] ) :
1341
1342                                 // Get or set width or height on the element
1343                                 size == undefined ?
1344                                         // Get width or height on the element
1345                                         (this.length ? jQuery.css( this[0], type ) : null) :
1346
1347                                         // Set the width or height on the element (default to pixels if value is unitless)
1348                                         this.css( type, size.constructor == String ? size : size + "px" );
1349         };
1350 });