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