src/core.js

   1 /*
   2  * jQuery @VERSION - New Wave Javascript
   3  *
   4  * Copyright (c) 2008 John Resig (jquery.com)
   5  * Dual licensed under the MIT (MIT-LICENSE.txt)
   6  * and GPL (GPL-LICENSE.txt) licenses.
   7  *
   8  * $Date$
   9  * $Rev$
  10  */
  11
  12 // Will speed up references to window, and allows munging its name.
  13 var window = this;
  14
  15 // Map over jQuery in case of overwrite
  16 var _jQuery = window.jQuery,
  17 // Map over the $ in case of overwrite
  18         _$ = window.$;
  19
  20 var jQuery = window.jQuery = window.$ = function( selector, context ) {
  21         // The jQuery object is actually just the init constructor 'enhanced'
  22         return new jQuery.fn.init( selector, context );
  23 };
  24
  25 // A simple way to check for HTML strings or ID strings
  26 // (both of which we optimize for)
  27 var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
  28
  29 // Is it a simple selector
  30         isSimple = /^.[^:#\[\.,]*$/,
  31
  32 // Will speed up references to undefined, and allows munging its name.
  33         undefined;
  34
  35 jQuery.fn = jQuery.prototype = {
  36         init: function( selector, context ) {
  37                 // Make sure that a selection was provided
  38                 selector = selector || document;
  39
  40                 // Handle $(DOMElement)
  41                 if ( selector.nodeType ) {
  42                         this[0] = selector;
  43                         this.length = 1;
  44                         this.context = selector;
  45                         return this;
  46                 }
  47                 // Handle HTML strings
  48                 if ( typeof selector === "string" ) {
  49                         // Are we dealing with HTML string or an ID?
  50                         var match = quickExpr.exec( selector );
  51
  52                         // Verify a match, and that no context was specified for #id
  53                         if ( match && (match[1] || !context) ) {
  54
  55                                 // HANDLE: $(html) -> $(array)
  56                                 if ( match[1] )
  57                                         selector = jQuery.clean( [ match[1] ], context );
  58
  59                                 // HANDLE: $("#id")
  60                                 else {
  61                                         var elem = document.getElementById( match[3] );
  62
  63                                         // Make sure an element was located
  64                                         if ( elem ){
  65                                                 // Handle the case where IE and Opera return items
  66                                                 // by name instead of ID
  67                                                 if ( elem.id != match[3] )
  68                                                         return jQuery().find( selector );
  69
  70                                                 // Otherwise, we inject the element directly into the jQuery object
  71                                                 var ret = jQuery( elem );
  72                                                 ret.context = document;
  73                                                 ret.selector = selector;
  74                                                 return ret;
  75                                         }
  76                                         selector = [];
  77                                 }
  78
  79                         // HANDLE: $(expr, [context])
  80                         // (which is just equivalent to: $(content).find(expr)
  81                         } else
  82                                 return jQuery( context ).find( selector );
  83
  84                 // HANDLE: $(function)
  85                 // Shortcut for document ready
  86                 } else if ( jQuery.isFunction( selector ) )
  87                         return jQuery( document ).ready( selector );
  88
  89                 return this.setArray(jQuery.makeArray(selector));
  90         },
  91
  92         // Start with an empty selector
  93         selector: "",
  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         // Get the Nth element in the matched element set OR
 104         // Get the whole matched element set as a clean array
 105         get: function( num ) {
 106                 return num === undefined ?
 107
 108                         // Return a 'clean' array
 109                         jQuery.makeArray( this ) :
 110
 111                         // Return just the object
 112                         this[ num ];
 113         },
 114
 115         // Take an array of elements and push it onto the stack
 116         // (returning the new matched element set)
 117         pushStack: function( elems, name, selector ) {
 118                 // Build a new jQuery matched element set
 119                 var ret = jQuery( elems );
 120
 121                 // Add the old object onto the stack (as a reference)
 122                 ret.prevObject = this;
 123
 124                 ret.context = this.context;
 125
 126                 if ( name === "find" )
 127                         ret.selector = this.selector + (this.selector ? " " : "") + selector;
 128                 else if ( name )
 129                         ret.selector = this.selector + "." + name + "(" + selector + ")";
 130
 131                 // Return the newly-formed element set
 132                 return ret;
 133         },
 134
 135         // Force the current matched set of elements to become
 136         // the specified array of elements (destroying the stack in the process)
 137         // You should use pushStack() in order to do this, but maintain the stack
 138         setArray: function( elems ) {
 139                 // Resetting the length to 0, then using the native Array push
 140                 // is a super-fast way to populate an object with array-like properties
 141                 this.length = 0;
 142                 Array.prototype.push.apply( this, elems );
 143
 144                 return this;
 145         },
 146
 147         // Execute a callback for every element in the matched set.
 148         // (You can seed the arguments with an array of args, but this is
 149         // only used internally.)
 150         each: function( callback, args ) {
 151                 return jQuery.each( this, callback, args );
 152         },
 153
 154         // Determine the position of an element within
 155         // the matched set of elements
 156         index: function( elem ) {
 157                 // Locate the position of the desired element
 158                 return jQuery.inArray(
 159                         // If it receives a jQuery object, the first element is used
 160                         elem && elem.jquery ? elem[0] : elem
 161                 , this );
 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 ( typeof name === "string" )
 169                         if ( value === undefined )
 170                                 return this[0] && jQuery[ type || "attr" ]( this[0], name );
 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                 // ignore negative width and height values
 192                 if ( (key == 'width' || key == 'height') && parseFloat(value) < 0 )
 193                         value = undefined;
 194                 return this.attr( key, value, "curCSS" );
 195         },
 196
 197         text: function( text ) {
 198                 if ( typeof text !== "object" && text != null )
 199                         return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) );
 200
 201                 var ret = "";
 202
 203                 jQuery.each( text || this, function(){
 204                         jQuery.each( this.childNodes, function(){
 205                                 if ( this.nodeType != 8 )
 206                                         ret += this.nodeType != 1 ?
 207                                                 this.nodeValue :
 208                                                 jQuery.fn.text( [ this ] );
 209                         });
 210                 });
 211
 212                 return ret;
 213         },
 214
 215         wrapAll: function( html ) {
 216                 if ( this[0] )
 217                         // The elements to wrap the target around
 218                         jQuery( html, this[0].ownerDocument )
 219                                 .clone()
 220                                 .insertBefore( this[0] )
 221                                 .map(function(){
 222                                         var elem = this;
 223
 224                                         while ( elem.firstChild )
 225                                                 elem = elem.firstChild;
 226
 227                                         return elem;
 228                                 })
 229                                 .append(this);
 230
 231                 return this;
 232         },
 233
 234         wrapInner: function( html ) {
 235                 return this.each(function(){
 236                         jQuery( this ).contents().wrapAll( html );
 237                 });
 238         },
 239
 240         wrap: function( html ) {
 241                 return this.each(function(){
 242                         jQuery( this ).wrapAll( html );
 243                 });
 244         },
 245
 246         append: function() {
 247                 return this.domManip(arguments, true, function(elem){
 248                         if (this.nodeType == 1)
 249                                 this.appendChild( elem );
 250                 });
 251         },
 252
 253         prepend: function() {
 254                 return this.domManip(arguments, true, function(elem){
 255                         if (this.nodeType == 1)
 256                                 this.insertBefore( elem, this.firstChild );
 257                 });
 258         },
 259
 260         before: function() {
 261                 return this.domManip(arguments, false, function(elem){
 262                         this.parentNode.insertBefore( elem, this );
 263                 });
 264         },
 265
 266         after: function() {
 267                 return this.domManip(arguments, false, function(elem){
 268                         this.parentNode.insertBefore( elem, this.nextSibling );
 269                 });
 270         },
 271
 272         end: function() {
 273                 return this.prevObject || jQuery( [] );
 274         },
 275
 276         find: function( selector ) {
 277                 var elems = jQuery.map(this, function(elem){
 278                         return jQuery.find( selector, elem );
 279                 });
 280
 281                 return this.pushStack( /[^+>] [^+>]/.test( selector ) ?
 282                         jQuery.unique( elems ) :
 283                         elems, "find", selector );
 284         },
 285
 286         clone: function( events ) {
 287                 // Do the clone
 288                 var ret = this.map(function(){
 289                         if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) {
 290                                 // IE copies events bound via attachEvent when
 291                                 // using cloneNode. Calling detachEvent on the
 292                                 // clone will also remove the events from the orignal
 293                                 // In order to get around this, we use innerHTML.
 294                                 // Unfortunately, this means some modifications to
 295                                 // attributes in IE that are actually only stored
 296                                 // as properties will not be copied (such as the
 297                                 // the name attribute on an input).
 298                                 var clone = this.cloneNode(true),
 299                                         container = document.createElement("div");
 300                                 container.appendChild(clone);
 301                                 return jQuery.clean([container.innerHTML])[0];
 302                         } else
 303                                 return this.cloneNode(true);
 304                 });
 305
 306                 // Need to set the expando to null on the cloned set if it exists
 307                 // removeData doesn't work here, IE removes it from the original as well
 308                 // this is primarily for IE but the data expando shouldn't be copied over in any browser
 309                 var clone = ret.find("*").andSelf().each(function(){
 310                         if ( this[ expando ] !== undefined )
 311                                 this[ expando ] = null;
 312                 });
 313
 314                 // Copy the events from the original to the clone
 315                 if ( events === true )
 316                         this.find("*").andSelf().each(function(i){
 317                                 if (this.nodeType == 3)
 318                                         return;
 319                                 var events = jQuery.data( this, "events" );
 320
 321                                 for ( var type in events )
 322                                         for ( var handler in events[ type ] )
 323                                                 jQuery.event.add( clone[ i ], type, events[ type ][ handler ], events[ type ][ handler ].data );
 324                         });
 325
 326                 // Return the cloned set
 327                 return ret;
 328         },
 329
 330         filter: function( selector ) {
 331                 return this.pushStack(
 332                         jQuery.isFunction( selector ) &&
 333                         jQuery.grep(this, function(elem, i){
 334                                 return selector.call( elem, i );
 335                         }) ||
 336
 337                         jQuery.multiFilter( selector, jQuery.grep(this, function(elem){
 338                                 return elem.nodeType === 1;
 339                         }) ), "filter", selector );
 340         },
 341
 342         closest: function( selector ) {
 343                 return this.map(function(){
 344                         var cur = this;
 345                         while ( cur && cur.ownerDocument ) {
 346                                 if ( jQuery(cur).is(selector) )
 347                                         return cur;
 348                                 cur = cur.parentNode;
 349                         }
 350                 });
 351         },
 352
 353         not: function( selector ) {
 354                 if ( typeof selector === "string" )
 355                         // test special case where just one selector is passed in
 356                         if ( isSimple.test( selector ) )
 357                                 return this.pushStack( jQuery.multiFilter( selector, this, true ), "not", selector );
 358                         else
 359                                 selector = jQuery.multiFilter( selector, this );
 360
 361                 var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
 362                 return this.filter(function() {
 363                         return isArrayLike ? jQuery.inArray( this, selector ) < 0 : this != selector;
 364                 });
 365         },
 366
 367         add: function( selector ) {
 368                 return this.pushStack( jQuery.unique( jQuery.merge(
 369                         this.get(),
 370                         typeof selector === "string" ?
 371                                 jQuery( selector ) :
 372                                 jQuery.makeArray( selector )
 373                 )));
 374         },
 375
 376         is: function( selector ) {
 377                 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
 378         },
 379
 380         hasClass: function( selector ) {
 381                 return !!selector && this.is( "." + selector );
 382         },
 383
 384         val: function( value ) {
 385                 if ( value === undefined ) {
 386                         var elem = this[0];
 387
 388                         if ( elem ) {
 389                                 if( jQuery.nodeName( elem, 'option' ) )
 390                                         return (elem.attributes.value || {}).specified ? elem.value : elem.text;
 391
 392                                 // We need to handle select boxes special
 393                                 if ( jQuery.nodeName( elem, "select" ) ) {
 394                                         var index = elem.selectedIndex,
 395                                                 values = [],
 396                                                 options = elem.options,
 397                                                 one = elem.type == "select-one";
 398
 399                                         // Nothing was selected
 400                                         if ( index < 0 )
 401                                                 return null;
 402
 403                                         // Loop through all the selected options
 404                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
 405                                                 var option = options[ i ];
 406
 407                                                 if ( option.selected ) {
 408                                                         // Get the specifc value for the option
 409                                                         value = jQuery(option).val();
 410
 411                                                         // We don't need an array for one selects
 412                                                         if ( one )
 413                                                                 return value;
 414
 415                                                         // Multi-Selects return an array
 416                                                         values.push( value );
 417                                                 }
 418                                         }
 419
 420                                         return values;
 421                                 }
 422
 423                                 // Everything else, we just grab the value
 424                                 return (elem.value || "").replace(/\r/g, "");
 425
 426                         }
 427
 428                         return undefined;
 429                 }
 430
 431                 if ( typeof value === "number" )
 432                         value += '';
 433
 434                 return this.each(function(){
 435                         if ( this.nodeType != 1 )
 436                                 return;
 437
 438                         if ( jQuery.isArray(value) && /radio|checkbox/.test( this.type ) )
 439                                 this.checked = (jQuery.inArray(this.value, value) >= 0 ||
 440                                         jQuery.inArray(this.name, value) >= 0);
 441
 442                         else if ( jQuery.nodeName( this, "select" ) ) {
 443                                 var values = jQuery.makeArray(value);
 444
 445                                 jQuery( "option", this ).each(function(){
 446                                         this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
 447                                                 jQuery.inArray( this.text, values ) >= 0);
 448                                 });
 449
 450                                 if ( !values.length )
 451                                         this.selectedIndex = -1;
 452
 453                         } else
 454                                 this.value = value;
 455                 });
 456         },
 457
 458         html: function( value ) {
 459                 return value === undefined ?
 460                         (this[0] ?
 461                                 this[0].innerHTML :
 462                                 null) :
 463                         this.empty().append( value );
 464         },
 465
 466         replaceWith: function( value ) {
 467                 return this.after( value ).remove();
 468         },
 469
 470         eq: function( i ) {
 471                 return this.slice( i, +i + 1 );
 472         },
 473
 474         slice: function() {
 475                 return this.pushStack( Array.prototype.slice.apply( this, arguments ),
 476                         "slice", Array.prototype.slice.call(arguments).join(",") );
 477         },
 478
 479         map: function( callback ) {
 480                 return this.pushStack( jQuery.map(this, function(elem, i){
 481                         return callback.call( elem, i, elem );
 482                 }));
 483         },
 484
 485         andSelf: function() {
 486                 return this.add( this.prevObject );
 487         },
 488
 489         domManip: function( args, table, callback ) {
 490                 if ( this[0] ) {
 491                         var fragment = this[0].ownerDocument.createDocumentFragment(),
 492                                 scripts = jQuery.clean( args, this[0].ownerDocument, fragment ),
 493                                 first = fragment.firstChild,
 494                                 extra = this.length > 1 ? fragment.cloneNode(true) : fragment;
 495
 496                         if ( first )
 497                                 for ( var i = 0, l = this.length; i < l; i++ )
 498                                         callback.call( root(this[i], first), i > 0 ? extra.cloneNode(true) : fragment );
 499
 500                         if ( scripts )
 501                                 jQuery.each( scripts, evalScript );
 502                 }
 503
 504                 return this;
 505
 506                 function root( elem, cur ) {
 507                         return table && jQuery.nodeName(elem, "table") && jQuery.nodeName(cur, "tr") ?
 508                                 (elem.getElementsByTagName("tbody")[0] ||
 509                                 elem.appendChild(elem.ownerDocument.createElement("tbody"))) :
 510                                 elem;
 511                 }
 512         }
 513 };
 514
 515 // Give the init function the jQuery prototype for later instantiation
 516 jQuery.fn.init.prototype = jQuery.fn;
 517
 518 function evalScript( i, elem ) {
 519         if ( elem.src )
 520                 jQuery.ajax({
 521                         url: elem.src,
 522                         async: false,
 523                         dataType: "script"
 524                 });
 525
 526         else
 527                 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
 528
 529         if ( elem.parentNode )
 530                 elem.parentNode.removeChild( elem );
 531 }
 532
 533 function now(){
 534         return +new Date;
 535 }
 536
 537 jQuery.extend = jQuery.fn.extend = function() {
 538         // copy reference to target object
 539         var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options;
 540
 541         // Handle a deep copy situation
 542         if ( typeof target === "boolean" ) {
 543                 deep = target;
 544                 target = arguments[1] || {};
 545                 // skip the boolean and the target
 546                 i = 2;
 547         }
 548
 549         // Handle case when target is a string or something (possible in deep copy)
 550         if ( typeof target !== "object" && !jQuery.isFunction(target) )
 551                 target = {};
 552
 553         // extend jQuery itself if only one argument is passed
 554         if ( length == i ) {
 555                 target = this;
 556                 --i;
 557         }
 558
 559         for ( ; i < length; i++ )
 560                 // Only deal with non-null/undefined values
 561                 if ( (options = arguments[ i ]) != null )
 562                         // Extend the base object
 563                         for ( var name in options ) {
 564                                 var src = target[ name ], copy = options[ name ];
 565
 566                                 // Prevent never-ending loop
 567                                 if ( target === copy )
 568                                         continue;
 569
 570                                 // Recurse if we're merging object values
 571                                 if ( deep && copy && typeof copy === "object" && !copy.nodeType )
 572                                         target[ name ] = jQuery.extend( deep,
 573                                                 // Never move original objects, clone them
 574                                                 src || ( copy.length != null ? [ ] : { } )
 575                                         , copy );
 576
 577                                 // Don't bring in undefined values
 578                                 else if ( copy !== undefined )
 579                                         target[ name ] = copy;
 580
 581                         }
 582
 583         // Return the modified object
 584         return target;
 585 };
 586
 587 // exclude the following css properties to add px
 588 var     exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 589         // cache defaultView
 590         defaultView = document.defaultView || {},
 591         toString = Object.prototype.toString;
 592
 593 jQuery.extend({
 594         noConflict: function( deep ) {
 595                 window.$ = _$;
 596
 597                 if ( deep )
 598                         window.jQuery = _jQuery;
 599
 600                 return jQuery;
 601         },
 602
 603         // See test/unit/core.js for details concerning isFunction.
 604         // Since version 1.3, DOM methods and functions like alert
 605         // aren't supported. They return false on IE (#2968).
 606         isFunction: function( obj ) {
 607                 return toString.call(obj) === "[object Function]";
 608         },
 609
 610         isArray: function( obj ) {
 611                 return toString.call(obj) === "[object Array]";
 612         },
 613
 614         // check if an element is in a (or is an) XML document
 615         isXMLDoc: function( elem ) {
 616                 return elem.documentElement && !elem.body ||
 617                         elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 618         },
 619
 620         // Evalulates a script in a global context
 621         globalEval: function( data ) {
 622                 data = jQuery.trim( data );
 623
 624                 if ( data ) {
 625                         // Inspired by code by Andrea Giammarchi
 626                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 627                         var head = document.getElementsByTagName("head")[0] || document.documentElement,
 628                                 script = document.createElement("script");
 629
 630                         script.type = "text/javascript";
 631                         if ( jQuery.support.scriptEval )
 632                                 script.appendChild( document.createTextNode( data ) );
 633                         else
 634                                 script.text = data;
 635
 636                         // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
 637                         // This arises when a base node is used (#2709).
 638                         head.insertBefore( script, head.firstChild );
 639                         head.removeChild( script );
 640                 }
 641         },
 642
 643         nodeName: function( elem, name ) {
 644                 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
 645         },
 646
 647         // args is for internal usage only
 648         each: function( object, callback, args ) {
 649                 var name, i = 0, length = object.length;
 650
 651                 if ( args ) {
 652                         if ( length === undefined ) {
 653                                 for ( name in object )
 654                                         if ( callback.apply( object[ name ], args ) === false )
 655                                                 break;
 656                         } else
 657                                 for ( ; i < length; )
 658                                         if ( callback.apply( object[ i++ ], args ) === false )
 659                                                 break;
 660
 661                 // A special, fast, case for the most common use of each
 662                 } else {
 663                         if ( length === undefined ) {
 664                                 for ( name in object )
 665                                         if ( callback.call( object[ name ], name, object[ name ] ) === false )
 666                                                 break;
 667                         } else
 668                                 for ( var 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 typeof value === "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 ( elem.nodeType == 1 && !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                         if (elem.nodeType == 1)
 698                                 elem.className = classNames !== undefined ?
 699                                         jQuery.grep(elem.className.split(/\s+/), function(className){
 700                                                 return !jQuery.className.has( classNames, className );
 701                                         }).join(" ") :
 702                                         "";
 703                 },
 704
 705                 // internal only, use hasClass("class")
 706                 has: function( elem, className ) {
 707                         return jQuery.inArray( className, (elem.className || elem).toString().split(/\s+/) ) > -1;
 708                 }
 709         },
 710
 711         // A method for quickly swapping in/out CSS properties to get correct calculations
 712         swap: function( elem, options, callback ) {
 713                 var old = {};
 714                 // Remember the old values, and insert the new ones
 715                 for ( var name in options ) {
 716                         old[ name ] = elem.style[ name ];
 717                         elem.style[ name ] = options[ name ];
 718                 }
 719
 720                 callback.call( elem );
 721
 722                 // Revert the old values
 723                 for ( var name in options )
 724                         elem.style[ name ] = old[ name ];
 725         },
 726
 727         css: function( elem, name, force ) {
 728                 if ( name == "width" || name == "height" ) {
 729                         var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name == "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
 730
 731                         function getWH() {
 732                                 val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
 733                                 var padding = 0, border = 0;
 734                                 jQuery.each( which, function() {
 735                                         padding += parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
 736                                         border += parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
 737                                 });
 738                                 val -= Math.round(padding + border);
 739                         }
 740
 741                         if ( jQuery(elem).is(":visible") )
 742                                 getWH();
 743                         else
 744                                 jQuery.swap( elem, props, getWH );
 745
 746                         return Math.max(0, val);
 747                 }
 748
 749                 return jQuery.curCSS( elem, name, force );
 750         },
 751
 752         curCSS: function( elem, name, force ) {
 753                 var ret, style = elem.style;
 754
 755                 // We need to handle opacity special in IE
 756                 if ( name == "opacity" && !jQuery.support.opacity ) {
 757                         ret = jQuery.attr( style, "opacity" );
 758
 759                         return ret == "" ?
 760                                 "1" :
 761                                 ret;
 762                 }
 763
 764                 // Make sure we're using the right name for getting the float value
 765                 if ( name.match( /float/i ) )
 766                         name = styleFloat;
 767
 768                 if ( !force && style && style[ name ] )
 769                         ret = style[ name ];
 770
 771                 else if ( defaultView.getComputedStyle ) {
 772
 773                         // Only "float" is needed here
 774                         if ( name.match( /float/i ) )
 775                                 name = "float";
 776
 777                         name = name.replace( /([A-Z])/g, "-$1" ).toLowerCase();
 778
 779                         var computedStyle = defaultView.getComputedStyle( elem, null );
 780
 781                         if ( computedStyle )
 782                                 ret = computedStyle.getPropertyValue( name );
 783
 784                         // We should always get a number back from opacity
 785                         if ( name == "opacity" && ret == "" )
 786                                 ret = "1";
 787
 788                 } else if ( elem.currentStyle ) {
 789                         var camelCase = name.replace(/\-(\w)/g, function(all, letter){
 790                                 return letter.toUpperCase();
 791                         });
 792
 793                         ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
 794
 795                         // From the awesome hack by Dean Edwards
 796                         // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
 797
 798                         // If we're not dealing with a regular pixel number
 799                         // but a number that has a weird ending, we need to convert it to pixels
 800                         if ( !/^\d+(px)?$/i.test( ret ) && /^\d/.test( ret ) ) {
 801                                 // Remember the original values
 802                                 var left = style.left, rsLeft = elem.runtimeStyle.left;
 803
 804                                 // Put in the new values to get a computed value out
 805                                 elem.runtimeStyle.left = elem.currentStyle.left;
 806                                 style.left = ret || 0;
 807                                 ret = style.pixelLeft + "px";
 808
 809                                 // Revert the changed values
 810                                 style.left = left;
 811                                 elem.runtimeStyle.left = rsLeft;
 812                         }
 813                 }
 814
 815                 return ret;
 816         },
 817
 818         clean: function( elems, context, fragment ) {
 819                 context = context || document;
 820
 821                 // !context.createElement fails in IE with an error but returns typeof 'object'
 822                 if ( typeof context.createElement === "undefined" )
 823                         context = context.ownerDocument || context[0] && context[0].ownerDocument || document;
 824
 825                 // If a single string is passed in and it's a single tag
 826                 // just do a createElement and skip the rest
 827                 if ( !fragment && elems.length === 1 && typeof elems[0] === "string" ) {
 828                         var match = /^<(\w+)\/?>$/.exec(elems[0]);
 829                         if ( match )
 830                                 return [ context.createElement( match[1] ) ];
 831                 }
 832
 833                 var ret = [], scripts = [], div = context.createElement("div");
 834
 835                 jQuery.each(elems, function(i, elem){
 836                         if ( typeof elem === "number" )
 837                                 elem += '';
 838
 839                         if ( !elem )
 840                                 return;
 841
 842                         // Convert html string into DOM nodes
 843                         if ( typeof elem === "string" ) {
 844                                 // Fix "XHTML"-style tags in all browsers
 845                                 elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag){
 846                                         return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
 847                                                 all :
 848                                                 front + "></" + tag + ">";
 849                                 });
 850
 851                                 // Trim whitespace, otherwise indexOf won't work as expected
 852                                 var tags = jQuery.trim( elem ).toLowerCase();
 853
 854                                 var wrap =
 855                                         // option or optgroup
 856                                         !tags.indexOf("<opt") &&
 857                                         [ 1, "<select multiple='multiple'>", "</select>" ] ||
 858
 859                                         !tags.indexOf("<leg") &&
 860                                         [ 1, "<fieldset>", "</fieldset>" ] ||
 861
 862                                         tags.match(/^<(thead|tbody|tfoot|colg|cap)/) &&
 863                                         [ 1, "<table>", "</table>" ] ||
 864
 865                                         !tags.indexOf("<tr") &&
 866                                         [ 2, "<table><tbody>", "</tbody></table>" ] ||
 867
 868                                         // <thead> matched above
 869                                         (!tags.indexOf("<td") || !tags.indexOf("<th")) &&
 870                                         [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ] ||
 871
 872                                         !tags.indexOf("<col") &&
 873                                         [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ] ||
 874
 875                                         // IE can't serialize <link> and <script> tags normally
 876                                         !jQuery.support.htmlSerialize &&
 877                                         [ 1, "div<div>", "</div>" ] ||
 878
 879                                         [ 0, "", "" ];
 880
 881                                 // Go to html and back, then peel off extra wrappers
 882                                 div.innerHTML = wrap[1] + elem + wrap[2];
 883
 884                                 // Move to the right depth
 885                                 while ( wrap[0]-- )
 886                                         div = div.lastChild;
 887
 888                                 // Remove IE's autoinserted <tbody> from table fragments
 889                                 if ( !jQuery.support.tbody ) {
 890
 891                                         // String was a <table>, *may* have spurious <tbody>
 892                                         var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
 893                                                 div.firstChild && div.firstChild.childNodes :
 894
 895                                                 // String was a bare <thead> or <tfoot>
 896                                                 wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
 897                                                         div.childNodes :
 898                                                         [];
 899
 900                                         for ( var j = tbody.length - 1; j >= 0 ; --j )
 901                                                 if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length )
 902                                                         tbody[ j ].parentNode.removeChild( tbody[ j ] );
 903
 904                                         }
 905
 906                                 // IE completely kills leading whitespace when innerHTML is used
 907                                 if ( !jQuery.support.leadingWhitespace && /^\s/.test( elem ) )
 908                                         div.insertBefore( context.createTextNode( elem.match(/^\s*/)[0] ), div.firstChild );
 909
 910                                 if ( fragment ) {
 911                                         var found = div.getElementsByTagName("script");
 912
 913                                         while ( found.length ) {
 914                                                 scripts.push( found[0] );
 915                                                 found[0].parentNode.removeChild( found[0] );
 916                                         }
 917                                 }
 918
 919                                 elem = jQuery.makeArray( div.childNodes );
 920                         }
 921
 922                         if ( elem.nodeType )
 923                                 ret.push( elem );
 924                         else
 925                                 ret = jQuery.merge( ret, elem );
 926
 927                 });
 928
 929                 if ( fragment ) {
 930                         for ( var i = 0; ret[i]; i++ ) {
 931                                 var node = ret[i];
 932                                 if ( jQuery.nodeName( node, "script" ) ) {
 933                                         if( node.parentNode )
 934                                                 node.parentNode.removeChild( node );
 935                                 } else {
 936                                         if ( node.nodeType === 1 )
 937                                                 ret = jQuery.merge( ret, node.getElementsByTagName("script"));
 938                                         fragment.appendChild( node );
 939                                 }
 940                         }
 941
 942                         return scripts;
 943                 }
 944
 945                 return ret;
 946         },
 947
 948         attr: function( elem, name, value ) {
 949                 // don't set attributes on text and comment nodes
 950                 if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
 951                         return undefined;
 952
 953                 var notxml = !jQuery.isXMLDoc( elem ),
 954                         // Whether we are setting (or getting)
 955                         set = value !== undefined;
 956
 957                 // Try to normalize/fix the name
 958                 name = notxml && jQuery.props[ name ] || name;
 959
 960                 // Only do all the following if this is a node (faster for style)
 961                 // IE elem.getAttribute passes even for style
 962                 if ( elem.tagName ) {
 963
 964                         // These attributes require special treatment
 965                         var special = /href|src|style/.test( name );
 966
 967                         // Safari mis-reports the default selected property of a hidden option
 968                         // Accessing the parent's selectedIndex property fixes it
 969                         if ( name == "selected" )
 970                                 elem.parentNode.selectedIndex;
 971
 972                         // If applicable, access the attribute via the DOM 0 way
 973                         if ( name in elem && notxml && !special ) {
 974                                 if ( set ){
 975                                         // We can't allow the type property to be changed (since it causes problems in IE)
 976                                         if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
 977                                                 throw "type property can't be changed";
 978
 979                                         elem[ name ] = value;
 980                                 }
 981
 982                                 // browsers index elements by id/name on forms, give priority to attributes.
 983                                 if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
 984                                         return elem.getAttributeNode( name ).nodeValue;
 985
 986                                 return elem[ name ];
 987                         }
 988
 989                         if ( !jQuery.support.style && notxml &&  name == "style" )
 990                                 return jQuery.attr( elem.style, "cssText", value );
 991
 992                         if ( set )
 993                                 // convert the value to a string (all browsers do this but IE) see #1070
 994                                 elem.setAttribute( name, "" + value );
 995
 996                         var attr = !jQuery.support.hrefNormalized && notxml && special
 997                                         // Some attributes require a special call on IE
 998                                         ? elem.getAttribute( name, 2 )
 999                                         : elem.getAttribute( name );
1000
1001                         // Non-existent attributes return null, we normalize to undefined
1002                         return attr === null ? undefined : attr;
1003                 }
1004
1005                 // elem is actually elem.style ... set the style
1006
1007                 // IE uses filters for opacity
1008                 if ( !jQuery.support.opacity && name == "opacity" ) {
1009                         if ( set ) {
1010                                 // IE has trouble with opacity if it does not have layout
1011                                 // Force it by setting the zoom level
1012                                 elem.zoom = 1;
1013
1014                                 // Set the alpha filter to set the opacity
1015                                 elem.filter = (elem.filter || "").replace( /alpha\([^)]*\)/, "" ) +
1016                                         (parseInt( value ) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
1017                         }
1018
1019                         return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
1020                                 (parseFloat( elem.filter.match(/opacity=([^)]*)/)[1] ) / 100) + '':
1021                                 "";
1022                 }
1023
1024                 name = name.replace(/-([a-z])/ig, function(all, letter){
1025                         return letter.toUpperCase();
1026                 });
1027
1028                 if ( set )
1029                         elem[ name ] = value;
1030
1031                 return elem[ name ];
1032         },
1033
1034         trim: function( text ) {
1035                 return (text || "").replace( /^\s+|\s+$/g, "" );
1036         },
1037
1038         makeArray: function( array ) {
1039                 var ret = [];
1040
1041                 if( array != null ){
1042                         var i = array.length;
1043                         // The window, strings (and functions) also have 'length'
1044                         if( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval )
1045                                 ret[0] = array;
1046                         else
1047                                 while( i )
1048                                         ret[--i] = array[i];
1049                 }
1050
1051                 return ret;
1052         },
1053
1054         inArray: function( elem, array ) {
1055                 for ( var i = 0, length = array.length; i < length; i++ )
1056                 // Use === because on IE, window == document
1057                         if ( array[ i ] === elem )
1058                                 return i;
1059
1060                 return -1;
1061         },
1062
1063         merge: function( first, second ) {
1064                 // We have to loop this way because IE & Opera overwrite the length
1065                 // expando of getElementsByTagName
1066                 var i = 0, elem, pos = first.length;
1067                 // Also, we need to make sure that the correct elements are being returned
1068                 // (IE returns comment nodes in a '*' query)
1069                 if ( !jQuery.support.getAll ) {
1070                         while ( (elem = second[ i++ ]) != null )
1071                                 if ( elem.nodeType != 8 )
1072                                         first[ pos++ ] = elem;
1073
1074                 } else
1075                         while ( (elem = second[ i++ ]) != null )
1076                                 first[ pos++ ] = elem;
1077
1078                 return first;
1079         },
1080
1081         unique: function( array ) {
1082                 var ret = [], done = {};
1083
1084                 try {
1085
1086                         for ( var i = 0, length = array.length; i < length; i++ ) {
1087                                 var id = jQuery.data( array[ i ] );
1088
1089                                 if ( !done[ id ] ) {
1090                                         done[ id ] = true;
1091                                         ret.push( array[ i ] );
1092                                 }
1093                         }
1094
1095                 } catch( e ) {
1096                         ret = array;
1097                 }
1098
1099                 return ret;
1100         },
1101
1102         grep: function( elems, callback, inv ) {
1103                 var ret = [];
1104
1105                 // Go through the array, only saving the items
1106                 // that pass the validator function
1107                 for ( var i = 0, length = elems.length; i < length; i++ )
1108                         if ( !inv != !callback( elems[ i ], i ) )
1109                                 ret.push( elems[ i ] );
1110
1111                 return ret;
1112         },
1113
1114         map: function( elems, callback ) {
1115                 var ret = [];
1116
1117                 // Go through the array, translating each of the items to their
1118                 // new value (or values).
1119                 for ( var i = 0, length = elems.length; i < length; i++ ) {
1120                         var value = callback( elems[ i ], i );
1121
1122                         if ( value != null )
1123                                 ret[ ret.length ] = value;
1124                 }
1125
1126                 return ret.concat.apply( [], ret );
1127         }
1128 });
1129
1130 // Use of jQuery.browser is deprecated.
1131 // It's included for backwards compatibility and plugins,
1132 // although they should work to migrate away.
1133
1134 var userAgent = navigator.userAgent.toLowerCase();
1135
1136 // Figure out what browser is being used
1137 jQuery.browser = {
1138         version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
1139         safari: /webkit/.test( userAgent ),
1140         opera: /opera/.test( userAgent ),
1141         msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
1142         mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
1143 };
1144
1145 // Check to see if the W3C box model is being used
1146 jQuery.boxModel = !jQuery.browser.msie || document.compatMode == "CSS1Compat";
1147
1148 jQuery.each({
1149         parent: function(elem){return elem.parentNode;},
1150         parents: function(elem){return jQuery.dir(elem,"parentNode");},
1151         next: function(elem){return jQuery.nth(elem,2,"nextSibling");},
1152         prev: function(elem){return jQuery.nth(elem,2,"previousSibling");},
1153         nextAll: function(elem){return jQuery.dir(elem,"nextSibling");},
1154         prevAll: function(elem){return jQuery.dir(elem,"previousSibling");},
1155         siblings: function(elem){return jQuery.sibling(elem.parentNode.firstChild,elem);},
1156         children: function(elem){return jQuery.sibling(elem.firstChild);},
1157         contents: function(elem){return jQuery.nodeName(elem,"iframe")?elem.contentDocument||elem.contentWindow.document:jQuery.makeArray(elem.childNodes);}
1158 }, function(name, fn){
1159         jQuery.fn[ name ] = function( selector ) {
1160                 var ret = jQuery.map( this, fn );
1161
1162                 if ( selector && typeof selector == "string" )
1163                         ret = jQuery.multiFilter( selector, ret );
1164
1165                 return this.pushStack( jQuery.unique( ret ), name, selector );
1166         };
1167 });
1168
1169 jQuery.each({
1170         appendTo: "append",
1171         prependTo: "prepend",
1172         insertBefore: "before",
1173         insertAfter: "after",
1174         replaceAll: "replaceWith"
1175 }, function(name, original){
1176         jQuery.fn[ name ] = function() {
1177                 var args = arguments;
1178
1179                 return this.each(function(){
1180                         for ( var i = 0, length = args.length; i < length; i++ )
1181                                 jQuery( args[ i ] )[ original ]( this );
1182                 });
1183         };
1184 });
1185
1186 jQuery.each({
1187         removeAttr: function( name ) {
1188                 jQuery.attr( this, name, "" );
1189                 if (this.nodeType == 1)
1190                         this.removeAttribute( name );
1191         },
1192
1193         addClass: function( classNames ) {
1194                 jQuery.className.add( this, classNames );
1195         },
1196
1197         removeClass: function( classNames ) {
1198                 jQuery.className.remove( this, classNames );
1199         },
1200
1201         toggleClass: function( classNames, state ) {
1202                 if( typeof state !== "boolean" )
1203                         state = !jQuery.className.has( this, classNames );
1204                 jQuery.className[ state ? "add" : "remove" ]( this, classNames );
1205         },
1206
1207         remove: function( selector ) {
1208                 if ( !selector || jQuery.filter( selector, [ this ] ).length ) {
1209                         // Prevent memory leaks
1210                         jQuery( "*", this ).add([this]).each(function(){
1211                                 jQuery.event.remove(this);
1212                                 jQuery.removeData(this);
1213                         });
1214                         if (this.parentNode)
1215                                 this.parentNode.removeChild( this );
1216                 }
1217         },
1218
1219         empty: function() {
1220                 // Remove element nodes and prevent memory leaks
1221                 jQuery( ">*", this ).remove();
1222
1223                 // Remove any remaining nodes
1224                 while ( this.firstChild )
1225                         this.removeChild( this.firstChild );
1226         }
1227 }, function(name, fn){
1228         jQuery.fn[ name ] = function(){
1229                 return this.each( fn, arguments );
1230         };
1231 });
1232
1233 // Helper function used by the dimensions and offset modules
1234 function num(elem, prop) {
1235         return elem[0] && parseInt( jQuery.curCSS(elem[0], prop, true), 10 ) || 0;
1236 }