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                         if ( window.execScript )
 568                                 window.execScript( data );
 569
 570                         else if ( jQuery.browser.safari )
 571                                 // safari doesn't provide a synchronous global eval
 572                                 window.setTimeout( data, 0 );
 573
 574                         else
 575                                 eval.call( window, data );
 576                 }
 577         },
 578
 579         nodeName: function( elem, name ) {
 580                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 581         },
 582
 583         cache: {},
 584
 585         data: function( elem, name, data ) {
 586                 elem = elem == window ?
 587                         windowData :
 588                         elem;
 589
 590                 var id = elem[ expando ];
 591
 592                 // Compute a unique ID for the element
 593                 if ( !id )
 594                         id = elem[ expando ] = ++uuid;
 595
 596                 // Only generate the data cache if we're
 597                 // trying to access or manipulate it
 598                 if ( name && !jQuery.cache[ id ] )
 599                         jQuery.cache[ id ] = {};
 600
 601                 // Prevent overriding the named cache with undefined values
 602                 if ( data != undefined )
 603                         jQuery.cache[ id ][ name ] = data;
 604
 605                 // Return the named cache data, or the ID for the element
 606                 return name ?
 607                         jQuery.cache[ id ][ name ] :
 608                         id;
 609         },
 610
 611         removeData: function( elem, name ) {
 612                 elem = elem == window ?
 613                         windowData :
 614                         elem;
 615
 616                 var id = elem[ expando ];
 617
 618                 // If we want to remove a specific section of the element's data
 619                 if ( name ) {
 620                         if ( jQuery.cache[ id ] ) {
 621                                 // Remove the section of cache data
 622                                 delete jQuery.cache[ id ][ name ];
 623
 624                                 // If we've removed all the data, remove the element's cache
 625                                 name = "";
 626
 627                                 for ( name in jQuery.cache[ id ] )
 628                                         break;
 629
 630                                 if ( !name )
 631                                         jQuery.removeData( elem );
 632                         }
 633
 634                 // Otherwise, we want to remove all of the element's data
 635                 } else {
 636                         // Clean up the element expando
 637                         try {
 638                                 delete elem[ expando ];
 639                         } catch(e){
 640                                 // IE has trouble directly removing the expando
 641                                 // but it's ok with using removeAttribute
 642                                 if ( elem.removeAttribute )
 643                                         elem.removeAttribute( expando );
 644                         }
 645
 646                         // Completely remove the data cache
 647                         delete jQuery.cache[ id ];
 648                 }
 649         },
 650
 651         // args is for internal usage only
 652         each: function( object, callback, args ) {
 653                 if ( args ) {
 654                         if ( object.length == undefined )
 655                                 for ( var name in object )
 656                                         callback.apply( object[ name ], args );
 657                         else
 658                                 for ( var i = 0, length = object.length; i < length; i++ )
 659                                         if ( callback.apply( object[ i ], args ) === false )
 660                                                 break;
 661
 662                 // A special, fast, case for the most common use of each
 663                 } else {
 664                         if ( object.length == undefined )
 665                                 for ( var name in object )
 666                                         callback.call( object[ name ], name, object[ name ] );
 667                         else
 668                                 for ( var i = 0, length = object.length, value = object[0];
 669                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
 670                 }
 671
 672                 return object;
 673         },
 674
 675         prop: function( elem, value, type, i, name ) {
 676                         // Handle executable functions
 677                         if ( jQuery.isFunction( value ) )
 678                                 value = value.call( elem, i );
 679
 680                         // Handle passing in a number to a CSS property
 681                         return value && value.constructor == Number && type == "curCSS" && !exclude.test( name ) ?
 682                                 value + "px" :
 683                                 value;
 684         },
 685
 686         className: {
 687                 // internal only, use addClass("class")
 688                 add: function( elem, classNames ) {
 689                         jQuery.each((classNames || "").split(/\s+/), function(i, className){
 690                                 if ( !jQuery.className.has( elem.className, className ) )
 691                                         elem.className += (elem.className ? " " : "") + className;
 692                         });
 693                 },
 694
 695                 // internal only, use removeClass("class")
 696                 remove: function( elem, classNames ) {
 697                         elem.className = classNames != undefined ?
 698                                 jQuery.grep(elem.className.split(/\s+/), function(className){
 699                                         return !jQuery.className.has( classNames, className );
 700                                 }).join(" ") :
 701                                 "";
 702                 },
 703
 704                 // internal only, use is(".class")
 705                 has: function( elem, className ) {
 706                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 707                 }
 708         },
 709
 710         // A method for quickly swapping in/out CSS properties to get correct calculations
 711         swap: function( elem, options, callback ) {
 712                 // Remember the old values, and insert the new ones
 713                 for ( var name in options ) {
 714                         elem.style[ "old" + name ] = elem.style[ name ];
 715                         elem.style[ name ] = options[ name ];
 716                 }
 717
 718                 callback.call( elem );
 719
 720                 // Revert the old values
 721                 for ( var name in options )
 722                         elem.style[ name ] = elem.style[ "old" + name ];
 723         },
 724
 725         css: function( elem, name ) {
 726                 if ( name == "height" || name == "width" ) {
 727                         var old = {}, height, width;
 728
 729                         // Revert the padding and border widths to get the
 730                         // correct height/width values
 731                         jQuery.each([ "Top", "Bottom", "Right", "Left" ], function(){
 732                                 old[ "padding" + this ] = 0;
 733                                 old[ "border" + this + "Width" ] = 0;
 734                         });
 735
 736                         // Swap out the padding/border values temporarily
 737                         jQuery.swap( elem, old, function() {
 738
 739                                 // If the element is visible, then the calculation is easy
 740                                 if ( jQuery( elem ).is(":visible") ) {
 741                                         height = elem.offsetHeight;
 742                                         width = elem.offsetWidth;
 743
 744                                 // Otherwise, we need to flip out more values
 745                                 } else {
 746                                         elem = jQuery( elem.cloneNode(true) )
 747                                                 .find(":radio").removeAttr("checked").end()
 748                                                 .css({
 749                                                         visibility: "hidden",
 750                                                         position: "absolute",
 751                                                         display: "block",
 752                                                         right: "0",
 753                                                         left: "0"
 754                                                 }).appendTo( elem.parentNode )[0];
 755
 756                                         var position = jQuery.css( elem.parentNode, "position" ) || "static";
 757                                         if ( position == "static" )
 758                                                 elem.parentNode.style.position = "relative";
 759
 760                                         height = elem.clientHeight;
 761                                         width = elem.clientWidth;
 762
 763                                         if ( position == "static" )
 764                                                 elem.parentNode.style.position = "static";
 765
 766                                         elem.parentNode.removeChild( elem );
 767                                 }
 768                         });
 769
 770                         return name == "height" ?
 771                                 height :
 772                                 width;
 773                 }
 774
 775                 return jQuery.curCSS( elem, name );
 776         },
 777
 778         curCSS: function( elem, name, force ) {
 779                 var ret;
 780
 781                 // A helper method for determining if an element's values are broken
 782                 function color( elem ) {
 783                         if ( !jQuery.browser.safari )
 784                                 return false;
 785
 786                         var ret = document.defaultView.getComputedStyle( elem, null );
 787                         return !ret || ret.getPropertyValue("color") == "";
 788                 }
 789
 790                 // We need to handle opacity special in IE
 791                 if ( name == "opacity" && jQuery.browser.msie ) {
 792                         ret = jQuery.attr( elem.style, "opacity" );
 793
 794                         return ret == "" ?
 795                                 "1" :
 796                                 ret;
 797                 }
 798
 799                 // Make sure we're using the right name for getting the float value
 800                 if ( name.match( /float/i ) )
 801                         name = styleFloat;
 802
 803                 if ( !force && elem.style[ name ] )
 804                         ret = elem.style[ name ];
 805
 806                 else if ( document.defaultView && document.defaultView.getComputedStyle ) {
 807
 808                         // Only "float" is needed here
 809                         if ( name.match( /float/i ) )
 810                                 name = "float";
 811
 812                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 813
 814                         var getComputedStyle = document.defaultView.getComputedStyle( elem, null );
 815
 816                         if ( getComputedStyle && !color( elem ) )
 817                                 ret = getComputedStyle.getPropertyValue( name );
 818
 819                         // If the element isn't reporting its values properly in Safari
 820                         // then some display: none elements are involved
 821                         else {
 822                                 var swap = [], stack = [];
 823
 824                                 // Locate all of the parent display: none elements
 825                                 for ( var a = elem; a && color(a); a = a.parentNode )
 826                                         stack.unshift(a);
 827
 828                                 // Go through and make them visible, but in reverse
 829                                 // (It would be better if we knew the exact display type that they had)
 830                                 for ( var i = 0; i < stack.length; i++ )
 831                                         if ( color( stack[ i ] ) ) {
 832                                                 swap[ i ] = stack[ i ].style.display;
 833                                                 stack[ i ].style.display = "block";
 834                                         }
 835
 836                                 // Since we flip the display style, we have to handle that
 837                                 // one special, otherwise get the value
 838                                 ret = name == "display" && swap[ stack.length - 1 ] != null ?
 839                                         "none" :
 840                                         document.defaultView.getComputedStyle( elem, null ).getPropertyValue( name ) || "";
 841
 842                                 // Finally, revert the display styles back
 843                                 for ( var i = 0; i < swap.length; i++ )
 844                                         if ( swap[ i ] != null )
 845                                                 stack[ i ].style.display = swap[ i ];
 846                         }
 847
 848                         // We should always get a number back from opacity
 849                         if ( name == "opacity" && ret == "" )
 850                                 ret = "1";
 851
 852                 } else if ( elem.currentStyle ) {
 853                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 854                                 return letter.toUpperCase();
 855                         });
 856
 857                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 858
 859                         // From the awesome hack by Dean Edwards
 860                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 861
 862                         // If we're not dealing with a regular pixel number
 863                         // but a number that has a weird ending, we need to convert it to pixels
 864                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 865                                 // Remember the original values
 866                                 var style = elem.style.left, runtimeStyle = elem.runtimeStyle.left;
 867
 868                                 // Put in the new values to get a computed value out
 869                                 elem.runtimeStyle.left = elem.currentStyle.left;
 870                                 elem.style.left = ret || 0;
 871                                 ret = elem.style.pixelLeft + "px";
 872
 873                                 // Revert the changed values
 874                                 elem.style.left = style;
 875                                 elem.runtimeStyle.left = runtimeStyle;
 876                         }
 877                 }
 878
 879                 return ret;
 880         },
 881
 882         clean: function( elems, context ) {
 883                 var ret = [];
 884                 context = context || document;
 885
 886                 jQuery.each(elems, function(i, elem){
 887                         if ( !elem )
 888                                 return;
 889
 890                         if ( elem.constructor == Number )
 891                                 elem = elem.toString();
 892
 893                         // Convert html string into DOM nodes
 894                         if ( typeof elem == "string" ) {
 895                                 // Fix "XHTML"-style tags in all browsers
 896                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 897                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area)$/i) ?
 898                                                 all :
 899                                                 front + "></" + tag + ">";
 900                                 });
 901
 902                                 // Trim whitespace, otherwise indexOf won't work as expected
 903                                 var tags = jQuery.trim( elem ).toLowerCase(), div = context.createElement("div");
 904
 905                                 var wrap =
 906                                         // option or optgroup
 907                                         !tags.indexOf("<opt") &&
 908                                         [ 1, "<select>", "</select>" ] ||
 909
 910                                         !tags.indexOf("<leg") &&
 911                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 912
 913                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 914                                         [ 1, "<table>", "</table>" ] ||
 915
 916                                         !tags.indexOf("<tr") &&
 917                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 918
 919                                         // <thead> matched above
 920                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 921                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 922
 923                                         !tags.indexOf("<col") &&
 924                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 925
 926                                         // IE can't serialize <link> and <script> tags normally
 927                                         jQuery.browser.msie &&
 928                                         [ 1, "div<div>", "</div>" ] ||
 929
 930                                         [ 0, "", "" ];
 931
 932                                 // Go to html and back, then peel off extra wrappers
 933                                 div.innerHTML = wrap[1] + elem + wrap[2];
 934
 935                                 // Move to the right depth
 936                                 while ( wrap[0]-- )
 937                                         div = div.lastChild;
 938
 939                                 // Remove IE's autoinserted <tbody> from table fragments
 940                                 if ( jQuery.browser.msie ) {
 941
 942                                         // String was a <table>, *may* have spurious <tbody>
 943                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
 944                                                 div.firstChild && div.firstChild.childNodes :
 945
 946                                                 // String was a bare <thead> or <tfoot>
 947                                                 wrap[1] == "<table>" && s.indexOf("<tbody") < 0 ?
 948                                                         div.childNodes :
 949                                                         [];
 950
 951                                         for ( var i = tbody.length - 1; i >= 0 ; --i )
 952                                                 if ( jQuery.nodeName( tbody[ i ], "tbody" ) && !tbody[ i ].childNodes.length )
 953                                                         tbody[ i ].parentNode.removeChild( tbody[ i ] );
 954
 955                                         // IE completely kills leading whitespace when innerHTML is used
 956                                         if ( /^\s/.test( elem ) )
 957                                                 div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
 958
 959                                 }
 960
 961                                 elem = jQuery.makeArray( div.childNodes );
 962                         }
 963
 964                         if ( elem.length === 0 && (!jQuery.nodeName( elem, "form" ) && !jQuery.nodeName( elem, "select" )) )
 965                                 return;
 966
 967                         if ( elem[0] == undefined || jQuery.nodeName( elem, "form" ) || elem.options )
 968                                 ret.push( elem );
 969
 970                         else
 971                                 ret = jQuery.merge( ret, elem );
 972
 973                 });
 974
 975                 return ret;
 976         },
 977
 978         attr: function( elem, name, value ) {
 979                 var fix = jQuery.isXMLDoc( elem ) ?
 980                         {} :
 981                         jQuery.props;
 982
 983                 // Safari mis-reports the default selected property of a hidden option
 984                 // Accessing the parent's selectedIndex property fixes it
 985                 if ( name == "selected" && jQuery.browser.safari )
 986                         elem.parentNode.selectedIndex;
 987
 988                 // Certain attributes only work when accessed via the old DOM 0 way
 989                 if ( fix[ name ] ) {
 990                         if ( value != undefined )
 991                                 elem[ fix[ name ] ] = value;
 992
 993                         return elem[ fix[ name ] ];
 994
 995                 } else if ( jQuery.browser.msie && name == "style" )
 996                         return jQuery.attr( elem.style, "cssText", value );
 997
 998                 else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName( elem, "form" ) && (name == "action" || name == "method") )
 999                         return elem.getAttributeNode( name ).nodeValue;
1000
1001                 // IE elem.getAttribute passes even for style
1002                 else if ( elem.tagName ) {
1003
1004                         if ( value != undefined ) {
1005                                 // We can't allow the type property to be changed (since it causes problems in IE)
1006                                 if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
1007                                         throw "type property can't be changed";
1008
1009                                 elem.setAttribute( name, value );
1010                         }
1011
1012                         if ( jQuery.browser.msie && /href|src/.test( name ) && !jQuery.isXMLDoc( elem ) )
1013                                 return elem.getAttribute( name, 2 );
1014
1015                         return elem.getAttribute( name );
1016
1017                 // elem is actually elem.style ... set the style
1018                 } else {
1019                         // IE actually uses filters for opacity
1020                         if ( name == "opacity" && jQuery.browser.msie ) {
1021                                 if ( value != undefined ) {
1022                                         // IE has trouble with opacity if it does not have layout
1023                                         // Force it by setting the zoom level
1024                                         elem.zoom = 1;
1025
1026                                         // Set the alpha filter to set the opacity
1027                                         elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1028                                                 (parseFloat( value ).toString() == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1029                                 }
1030
1031                                 return elem.filter ?
1032                                         (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100).toString() :
1033                                         "";
1034                         }
1035
1036                         name = name.replace(/-([a-z])/ig, function(all, letter){
1037                                 return letter.toUpperCase();
1038                         });
1039
1040                         if ( value != undefined )
1041                                 elem[ name ] = value;
1042
1043                         return elem[ name ];
1044                 }
1045         },
1046
1047         trim: function( text ) {
1048                 return (text || "").replace( /^\s+|\s+$/g, "" );
1049         },
1050
1051         makeArray: function( array ) {
1052                 var ret = [];
1053
1054                 // Need to use typeof to fight Safari childNodes crashes
1055                 if ( typeof array != "array" )
1056                         for ( var i = 0, length = array.length; i < length; i++ )
1057                                 ret.push( array[ i ] );
1058                 else
1059                         ret = array.slice( 0 );
1060
1061                 return ret;
1062         },
1063
1064         inArray: function( elem, array ) {
1065                 for ( var i = 0, length = array.length; i < length; i++ )
1066                         if ( array[ i ] == elem )
1067                                 return i;
1068
1069                 return -1;
1070         },
1071
1072         merge: function( first, second ) {
1073                 // We have to loop this way because IE & Opera overwrite the length
1074                 // expando of getElementsByTagName
1075
1076                 // Also, we need to make sure that the correct elements are being returned
1077                 // (IE returns comment nodes in a '*' query)
1078                 if ( jQuery.browser.msie ) {
1079                         for ( var i = 0; second[ i ]; i++ )
1080                                 if ( second[ i ].nodeType != 8 )
1081                                         first.push( second[ i ] );
1082
1083                 } else
1084                         for ( var i = 0; second[ i ]; i++ )
1085                                 first.push( second[ i ] );
1086
1087                 return first;
1088         },
1089
1090         unique: function( array ) {
1091                 var ret = [], done = {};
1092
1093                 try {
1094
1095                         for ( var i = 0, length = array.length; i < length; i++ ) {
1096                                 var id = jQuery.data( array[ i ] );
1097
1098                                 if ( !done[ id ] ) {
1099                                         done[ id ] = true;
1100                                         ret.push( array[ i ] );
1101                                 }
1102                         }
1103
1104                 } catch( e ) {
1105                         ret = array;
1106                 }
1107
1108                 return ret;
1109         },
1110
1111         grep: function( elems, callback, inv ) {
1112                 // If a string is passed in for the function, make a function
1113                 // for it (a handy shortcut)
1114                 if ( typeof callback == "string" )
1115                         callback = eval("false||function(a,i){return " + callback + "}");
1116
1117                 var ret = [];
1118
1119                 // Go through the array, only saving the items
1120                 // that pass the validator function
1121                 for ( var i = 0, length = elems.length; i < length; i++ )
1122                         if ( !inv && callback( elems[ i ], i ) || inv && !callback( elems[ i ], i ) )
1123                                 ret.push( elems[ i ] );
1124
1125                 return ret;
1126         },
1127
1128         map: function( elems, callback ) {
1129                 var ret = [];
1130
1131                 // Go through the array, translating each of the items to their
1132                 // new value (or values).
1133                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1134                         var value = callback( elems[ i ], i );
1135
1136                         if ( value !== null && value != undefined ) {
1137                                 if ( value.constructor != Array )
1138                                         value = [ value ];
1139
1140                                 ret = ret.concat( value );
1141                         }
1142                 }
1143
1144                 return ret;
1145         }
1146 });
1147
1148 var userAgent = navigator.userAgent.toLowerCase();
1149
1150 // Figure out what browser is being used
1151 jQuery.browser = {
1152         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1],
1153         safari: /webkit/.test( userAgent ),
1154         opera: /opera/.test( userAgent ),
1155         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1156         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1157 };
1158
1159 var styleFloat = jQuery.browser.msie ?
1160         "styleFloat" :
1161         "cssFloat";
1162
1163 jQuery.extend({
1164         // Check to see if the W3C box model is being used
1165         boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",
1166
1167         props: {
1168                 "for": "htmlFor",
1169                 "class": "className",
1170                 "float": styleFloat,
1171                 cssFloat: styleFloat,
1172                 styleFloat: styleFloat,
1173                 innerHTML: "innerHTML",
1174                 className: "className",
1175                 value: "value",
1176                 disabled: "disabled",
1177                 checked: "checked",
1178                 readonly: "readOnly",
1179                 selected: "selected",
1180                 maxlength: "maxLength",
1181                 selectedIndex: "selectedIndex"
1182         }
1183 });
1184
1185 jQuery.each({
1186         parent: "elem.parentNode",
1187         parents: "jQuery.dir(elem,'parentNode')",
1188         next: "jQuery.nth(elem,2,'nextSibling')",
1189         prev: "jQuery.nth(elem,2,'previousSibling')",
1190         nextAll: "jQuery.dir(elem,'nextSibling')",
1191         prevAll: "jQuery.dir(elem,'previousSibling')",
1192         siblings: "jQuery.sibling(elem.parentNode.firstChild,elem)",
1193         children: "jQuery.sibling(elem.firstChild)",
1194         contents: "jQuery.nodeName(elem,'iframe')?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes)"
1195 }, function(name, fn){
1196         fn = eval("false||function(elem){return " + fn + "}");
1197
1198         jQuery.fn[ name ] = function( selector ) {
1199                 var ret = jQuery.map( this, fn );
1200
1201                 if ( selector && typeof selector == "string" )
1202                         ret = jQuery.multiFilter( selector, ret );
1203
1204                 return this.pushStack( jQuery.unique( ret ) );
1205         };
1206 });
1207
1208 jQuery.each({
1209         appendTo: "append",
1210         prependTo: "prepend",
1211         insertBefore: "before",
1212         insertAfter: "after",
1213         replaceAll: "replaceWith"
1214 }, function(name, original){
1215         jQuery.fn[ name ] = function() {
1216                 var args = arguments;
1217
1218                 return this.each(function(){
1219                         for ( var i = 0, length = args.length; i < length; i++ )
1220                                 jQuery( args[ i ] )[ original ]( this );
1221                 });
1222         };
1223 });
1224
1225 jQuery.each({
1226         removeAttr: function( name ) {
1227                 jQuery.attr( this, name, "" );
1228                 this.removeAttribute( name );
1229         },
1230
1231         addClass: function( classNames ) {
1232                 jQuery.className.add( this, classNames );
1233         },
1234
1235         removeClass: function( classNames ) {
1236                 jQuery.className.remove( this, classNames );
1237         },
1238
1239         toggleClass: function( classNames ) {
1240                 jQuery.className[ jQuery.className.has( this, classNames ) ? "remove" : "add" ]( this, classNames );
1241         },
1242
1243         remove: function( selector ) {
1244                 if ( !selector || jQuery.filter( selector, [ this ] ).r.length ) {
1245                         jQuery.removeData( this );
1246                         this.parentNode.removeChild( this );
1247                 }
1248         },
1249
1250         empty: function() {
1251                 // Clean up the cache
1252                 jQuery( "*", this ).each(function(){
1253                         jQuery.removeData(this);
1254                 });
1255
1256                 while ( this.firstChild )
1257                         this.removeChild( this.firstChild );
1258         }
1259 }, function(name, fn){
1260         jQuery.fn[ name ] = function(){
1261                 return this.each( fn, arguments );
1262         };
1263 });
1264
1265 jQuery.each([ "Height", "Width" ], function(i, name){
1266         var type = name.toLowerCase();
1267
1268         jQuery.fn[ type ] = function( size ) {
1269                 // Get window width or height
1270                 return this[0] == window ?
1271                         // Opera reports document.body.client[Width/Height] properly in both quirks and standards
1272                         jQuery.browser.opera && document.body[ "client" + name ] ||
1273
1274                         // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
1275                         jQuery.browser.safari && self[ "inner" + name ] ||
1276
1277                         // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
1278                         document.compatMode == "CSS1Compat" && document.documentElement[ "client" + name ] || document.body[ "client" + name ] :
1279
1280                         // Get document width or height
1281                         this[0] == document ?
1282                                 // Either scroll[Width/Height] or offset[Width/Height], whichever is greater (Mozilla reports scrollWidth the same as offsetWidth)
1283                                 Math.max( document.body[ "scroll" + name ], document.body[ "offset" + name ] ) :
1284
1285                                 // Get or set width or height on the element
1286                                 size == undefined ?
1287                                         // Get width or height on the element
1288                                         (this.length ? jQuery.css( this[0], type ) : null) :
1289
1290                                         // Set the width or height on the element (default to pixels if value is unitless)
1291                                         this.css( type, size.constructor == String ? size : size + "px" );
1292         };
1293 });