src/selector.js

   1 /*!
   2  * Sizzle CSS Selector Engine - v0.9.3
   3  *  Copyright 2009, The Dojo Foundation
   4  *  Released under the MIT, BSD, and GPL Licenses.
   5  *  More information: http://sizzlejs.com/
   6  */
   7 (function(){
   8
   9 var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?/g,
  10         done = 0,
  11         toString = Object.prototype.toString;
  12
  13 var Sizzle = function(selector, context, results, seed) {
  14         results = results || [];
  15         context = context || document;
  16
  17         if ( context.nodeType !== 1 && context.nodeType !== 9 )
  18                 return [];
  19
  20         if ( !selector || typeof selector !== "string" ) {
  21                 return results;
  22         }
  23
  24         var parts = [], m, set, checkSet, check, mode, extra, prune = true;
  25
  26         // Reset the position of the chunker regexp (start from head)
  27         chunker.lastIndex = 0;
  28
  29         while ( (m = chunker.exec(selector)) !== null ) {
  30                 parts.push( m[1] );
  31
  32                 if ( m[2] ) {
  33                         extra = RegExp.rightContext;
  34                         break;
  35                 }
  36         }
  37
  38         if ( parts.length > 1 && origPOS.exec( selector ) ) {
  39                 if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
  40                         set = posProcess( parts[0] + parts[1], context );
  41                 } else {
  42                         set = Expr.relative[ parts[0] ] ?
  43                                 [ context ] :
  44                                 Sizzle( parts.shift(), context );
  45
  46                         while ( parts.length ) {
  47                                 selector = parts.shift();
  48
  49                                 if ( Expr.relative[ selector ] )
  50                                         selector += parts.shift();
  51
  52                                 set = posProcess( selector, set );
  53                         }
  54                 }
  55         } else {
  56                 var ret = seed ?
  57                         { expr: parts.pop(), set: makeArray(seed) } :
  58                         Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context, isXML(context) );
  59                 set = Sizzle.filter( ret.expr, ret.set );
  60
  61                 if ( parts.length > 0 ) {
  62                         checkSet = makeArray(set);
  63                 } else {
  64                         prune = false;
  65                 }
  66
  67                 while ( parts.length ) {
  68                         var cur = parts.pop(), pop = cur;
  69
  70                         if ( !Expr.relative[ cur ] ) {
  71                                 cur = "";
  72                         } else {
  73                                 pop = parts.pop();
  74                         }
  75
  76                         if ( pop == null ) {
  77                                 pop = context;
  78                         }
  79
  80                         Expr.relative[ cur ]( checkSet, pop, isXML(context) );
  81                 }
  82         }
  83
  84         if ( !checkSet ) {
  85                 checkSet = set;
  86         }
  87
  88         if ( !checkSet ) {
  89                 throw "Syntax error, unrecognized expression: " + (cur || selector);
  90         }
  91
  92         if ( toString.call(checkSet) === "[object Array]" ) {
  93                 if ( !prune ) {
  94                         results.push.apply( results, checkSet );
  95                 } else if ( context.nodeType === 1 ) {
  96                         for ( var i = 0; checkSet[i] != null; i++ ) {
  97                                 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
  98                                         results.push( set[i] );
  99                                 }
 100                         }
 101                 } else {
 102                         for ( var i = 0; checkSet[i] != null; i++ ) {
 103                                 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
 104                                         results.push( set[i] );
 105                                 }
 106                         }
 107                 }
 108         } else {
 109                 makeArray( checkSet, results );
 110         }
 111
 112         if ( extra ) {
 113                 Sizzle( extra, context, results, seed );
 114
 115                 if ( sortOrder ) {
 116                         hasDuplicate = false;
 117                         results.sort(sortOrder);
 118
 119                         if ( hasDuplicate ) {
 120                                 for ( var i = 1; i < results.length; i++ ) {
 121                                         if ( results[i] === results[i-1] ) {
 122                                                 results.splice(i--, 1);
 123                                         }
 124                                 }
 125                         }
 126                 }
 127         }
 128
 129         return results;
 130 };
 131
 132 Sizzle.matches = function(expr, set){
 133         return Sizzle(expr, null, null, set);
 134 };
 135
 136 Sizzle.find = function(expr, context, isXML){
 137         var set, match;
 138
 139         if ( !expr ) {
 140                 return [];
 141         }
 142
 143         for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
 144                 var type = Expr.order[i], match;
 145
 146                 if ( (match = Expr.match[ type ].exec( expr )) ) {
 147                         var left = RegExp.leftContext;
 148
 149                         if ( left.substr( left.length - 1 ) !== "\\" ) {
 150                                 match[1] = (match[1] || "").replace(/\\/g, "");
 151                                 set = Expr.find[ type ]( match, context, isXML );
 152                                 if ( set != null ) {
 153                                         expr = expr.replace( Expr.match[ type ], "" );
 154                                         break;
 155                                 }
 156                         }
 157                 }
 158         }
 159
 160         if ( !set ) {
 161                 set = context.getElementsByTagName("*");
 162         }
 163
 164         return {set: set, expr: expr};
 165 };
 166
 167 Sizzle.filter = function(expr, set, inplace, not){
 168         var old = expr, result = [], curLoop = set, match, anyFound;
 169
 170         while ( expr && set.length ) {
 171                 for ( var type in Expr.filter ) {
 172                         if ( (match = Expr.match[ type ].exec( expr )) != null ) {
 173                                 var filter = Expr.filter[ type ], found, item;
 174                                 anyFound = false;
 175
 176                                 if ( curLoop == result ) {
 177                                         result = [];
 178                                 }
 179
 180                                 if ( Expr.preFilter[ type ] ) {
 181                                         match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not );
 182
 183                                         if ( !match ) {
 184                                                 anyFound = found = true;
 185                                         } else if ( match === true ) {
 186                                                 continue;
 187                                         }
 188                                 }
 189
 190                                 if ( match ) {
 191                                         for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
 192                                                 if ( item ) {
 193                                                         found = filter( item, match, i, curLoop );
 194                                                         var pass = not ^ !!found;
 195
 196                                                         if ( inplace && found != null ) {
 197                                                                 if ( pass ) {
 198                                                                         anyFound = true;
 199                                                                 } else {
 200                                                                         curLoop[i] = false;
 201                                                                 }
 202                                                         } else if ( pass ) {
 203                                                                 result.push( item );
 204                                                                 anyFound = true;
 205                                                         }
 206                                                 }
 207                                         }
 208                                 }
 209
 210                                 if ( found !== undefined ) {
 211                                         if ( !inplace ) {
 212                                                 curLoop = result;
 213                                         }
 214
 215                                         expr = expr.replace( Expr.match[ type ], "" );
 216
 217                                         if ( !anyFound ) {
 218                                                 return [];
 219                                         }
 220
 221                                         break;
 222                                 }
 223                         }
 224                 }
 225
 226                 // Improper expression
 227                 if ( expr == old ) {
 228                         if ( anyFound == null ) {
 229                                 throw "Syntax error, unrecognized expression: " + expr;
 230                         } else {
 231                                 break;
 232                         }
 233                 }
 234
 235                 old = expr;
 236         }
 237
 238         return curLoop;
 239 };
 240
 241 var Expr = Sizzle.selectors = {
 242         order: [ "ID", "NAME", "TAG" ],
 243         match: {
 244                 ID: /#((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 245                 CLASS: /\.((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 246                 NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF_-]|\\.)+)['"]*\]/,
 247                 ATTR: /\[\s*((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
 248                 TAG: /^((?:[\w\u00c0-\uFFFF\*_-]|\\.)+)/,
 249                 CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
 250                 POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
 251                 PSEUDO: /:((?:[\w\u00c0-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
 252         },
 253         attrMap: {
 254                 "class": "className",
 255                 "for": "htmlFor"
 256         },
 257         attrHandle: {
 258                 href: function(elem){
 259                         return elem.getAttribute("href");
 260                 }
 261         },
 262         relative: {
 263                 "+": function(checkSet, part, isXML){
 264                         var     isPartStr = typeof part === "string",
 265                                 isTag = isPartStr && !/\W/.test(part),
 266                                 isPartStrNotTag = isPartStr && !isTag;
 267                         if ( isTag && !isXML ) part = part.toUpperCase();
 268                         for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
 269                                 if ( elem = checkSet[i] ) {
 270                                         while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {};
 271                                         checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ?
 272                                                  elem : elem === part;
 273                                 }
 274                         }
 275                         if (isPartStrNotTag) {
 276                                 Sizzle.filter( part, checkSet, true );
 277                         }
 278                 },
 279                 ">": function(checkSet, part, isXML){
 280                         if ( typeof part === "string" && !/\W/.test(part) ) {
 281                                 part = isXML ? part : part.toUpperCase();
 282
 283                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 284                                         var elem = checkSet[i];
 285                                         if ( elem ) {
 286                                                 var parent = elem.parentNode;
 287                                                 checkSet[i] = parent.nodeName === part ? parent : false;
 288                                         }
 289                                 }
 290                         } else {
 291                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 292                                         var elem = checkSet[i];
 293                                         if ( elem ) {
 294                                                 checkSet[i] = typeof part === "string" ?
 295                                                         elem.parentNode :
 296                                                         elem.parentNode === part;
 297                                         }
 298                                 }
 299
 300                                 if ( typeof part === "string" ) {
 301                                         Sizzle.filter( part, checkSet, true );
 302                                 }
 303                         }
 304                 },
 305                 "": function(checkSet, part, isXML){
 306                         var doneName = done++, checkFn = dirCheck;
 307
 308                         if ( !part.match(/\W/) ) {
 309                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 310                                 checkFn = dirNodeCheck;
 311                         }
 312
 313                         checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
 314                 },
 315                 "~": function(checkSet, part, isXML){
 316                         var doneName = done++, checkFn = dirCheck;
 317
 318                         if ( typeof part === "string" && !part.match(/\W/) ) {
 319                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 320                                 checkFn = dirNodeCheck;
 321                         }
 322
 323                         checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
 324                 }
 325         },
 326         find: {
 327                 ID: function(match, context, isXML){
 328                         if ( typeof context.getElementById !== "undefined" && !isXML ) {
 329                                 var m = context.getElementById(match[1]);
 330                                 return m ? [m] : [];
 331                         }
 332                 },
 333                 NAME: function(match, context, isXML){
 334                         if ( typeof context.getElementsByName !== "undefined" ) {
 335                                 var ret = [], results = context.getElementsByName(match[1]);
 336
 337                                 for ( var i = 0, l = results.length; i < l; i++ ) {
 338                                         if ( results[i].getAttribute("name") === match[1] ) {
 339                                                 ret.push( results[i] );
 340                                         }
 341                                 }
 342
 343                                 return ret.length === 0 ? null : ret;
 344                         }
 345                 },
 346                 TAG: function(match, context){
 347                         return context.getElementsByTagName(match[1]);
 348                 }
 349         },
 350         preFilter: {
 351                 CLASS: function(match, curLoop, inplace, result, not){
 352                         match = " " + match[1].replace(/\\/g, "") + " ";
 353
 354                         for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
 355                                 if ( elem ) {
 356                                         if ( not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0) ) {
 357                                                 if ( !inplace )
 358                                                         result.push( elem );
 359                                         } else if ( inplace ) {
 360                                                 curLoop[i] = false;
 361                                         }
 362                                 }
 363                         }
 364
 365                         return false;
 366                 },
 367                 ID: function(match){
 368                         return match[1].replace(/\\/g, "");
 369                 },
 370                 TAG: function(match, curLoop){
 371                         for ( var i = 0; curLoop[i] === false; i++ ){}
 372                         return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
 373                 },
 374                 CHILD: function(match){
 375                         if ( match[1] == "nth" ) {
 376                                 // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
 377                                 var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
 378                                         match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
 379                                         !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
 380
 381                                 // calculate the numbers (first)n+(last) including if they are negative
 382                                 match[2] = (test[1] + (test[2] || 1)) - 0;
 383                                 match[3] = test[3] - 0;
 384                         }
 385
 386                         // TODO: Move to normal caching system
 387                         match[0] = done++;
 388
 389                         return match;
 390                 },
 391                 ATTR: function(match){
 392                         var name = match[1].replace(/\\/g, "");
 393
 394                         if ( Expr.attrMap[name] ) {
 395                                 match[1] = Expr.attrMap[name];
 396                         }
 397
 398                         if ( match[2] === "~=" ) {
 399                                 match[4] = " " + match[4] + " ";
 400                         }
 401
 402                         return match;
 403                 },
 404                 PSEUDO: function(match, curLoop, inplace, result, not){
 405                         if ( match[1] === "not" ) {
 406                                 // If we're dealing with a complex expression, or a simple one
 407                                 if ( match[3].match(chunker).length > 1 || /^\w/.test(match[3]) ) {
 408                                         match[3] = Sizzle(match[3], null, null, curLoop);
 409                                 } else {
 410                                         var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
 411                                         if ( !inplace ) {
 412                                                 result.push.apply( result, ret );
 413                                         }
 414                                         return false;
 415                                 }
 416                         } else if ( Expr.match.POS.test( match[0] ) ) {
 417                                 return true;
 418                         }
 419
 420                         return match;
 421                 },
 422                 POS: function(match){
 423                         match.unshift( true );
 424                         return match;
 425                 }
 426         },
 427         filters: {
 428                 enabled: function(elem){
 429                         return elem.disabled === false && elem.type !== "hidden";
 430                 },
 431                 disabled: function(elem){
 432                         return elem.disabled === true;
 433                 },
 434                 checked: function(elem){
 435                         return elem.checked === true;
 436                 },
 437                 selected: function(elem){
 438                         // Accessing this property makes selected-by-default
 439                         // options in Safari work properly
 440                         elem.parentNode.selectedIndex;
 441                         return elem.selected === true;
 442                 },
 443                 parent: function(elem){
 444                         return !!elem.firstChild;
 445                 },
 446                 empty: function(elem){
 447                         return !elem.firstChild;
 448                 },
 449                 has: function(elem, i, match){
 450                         return !!Sizzle( match[3], elem ).length;
 451                 },
 452                 header: function(elem){
 453                         return /h\d/i.test( elem.nodeName );
 454                 },
 455                 text: function(elem){
 456                         return "text" === elem.type;
 457                 },
 458                 radio: function(elem){
 459                         return "radio" === elem.type;
 460                 },
 461                 checkbox: function(elem){
 462                         return "checkbox" === elem.type;
 463                 },
 464                 file: function(elem){
 465                         return "file" === elem.type;
 466                 },
 467                 password: function(elem){
 468                         return "password" === elem.type;
 469                 },
 470                 submit: function(elem){
 471                         return "submit" === elem.type;
 472                 },
 473                 image: function(elem){
 474                         return "image" === elem.type;
 475                 },
 476                 reset: function(elem){
 477                         return "reset" === elem.type;
 478                 },
 479                 button: function(elem){
 480                         return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
 481                 },
 482                 input: function(elem){
 483                         return /input|select|textarea|button/i.test(elem.nodeName);
 484                 }
 485         },
 486         setFilters: {
 487                 first: function(elem, i){
 488                         return i === 0;
 489                 },
 490                 last: function(elem, i, match, array){
 491                         return i === array.length - 1;
 492                 },
 493                 even: function(elem, i){
 494                         return i % 2 === 0;
 495                 },
 496                 odd: function(elem, i){
 497                         return i % 2 === 1;
 498                 },
 499                 lt: function(elem, i, match){
 500                         return i < match[3] - 0;
 501                 },
 502                 gt: function(elem, i, match){
 503                         return i > match[3] - 0;
 504                 },
 505                 nth: function(elem, i, match){
 506                         return match[3] - 0 == i;
 507                 },
 508                 eq: function(elem, i, match){
 509                         return match[3] - 0 == i;
 510                 }
 511         },
 512         filter: {
 513                 CHILD: function(elem, match){
 514                         var type = match[1], node = elem;
 515                         switch (type) {
 516                                 case 'only':
 517                                 case 'first':
 518                                         while (node = node.previousSibling)  {
 519                                                 if ( node.nodeType === 1 ) return false;
 520                                         }
 521                                         if ( type == 'first') return true;
 522                                         node = elem;
 523                                 case 'last':
 524                                         while (node = node.nextSibling)  {
 525                                                 if ( node.nodeType === 1 ) return false;
 526                                         }
 527                                         return true;
 528                                 case 'nth':
 529                                         var first = match[2], last = match[3];
 530
 531                                         if ( first == 1 && last == 0 ) {
 532                                                 return true;
 533                                         }
 534
 535                                         var doneName = match[0],
 536                                                 parent = elem.parentNode;
 537
 538                                         if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
 539                                                 var count = 0;
 540                                                 for ( node = parent.firstChild; node; node = node.nextSibling ) {
 541                                                         if ( node.nodeType === 1 ) {
 542                                                                 node.nodeIndex = ++count;
 543                                                         }
 544                                                 }
 545                                                 parent.sizcache = doneName;
 546                                         }
 547
 548                                         var diff = elem.nodeIndex - last;
 549                                         if ( first == 0 ) {
 550                                                 return diff == 0;
 551                                         } else {
 552                                                 return ( diff % first == 0 && diff / first >= 0 );
 553                                         }
 554                         }
 555                 },
 556                 PSEUDO: function(elem, match, i, array){
 557                         var name = match[1], filter = Expr.filters[ name ];
 558
 559                         if ( filter ) {
 560                                 return filter( elem, i, match, array );
 561                         } else if ( name === "contains" ) {
 562                                 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
 563                         } else if ( name === "not" ) {
 564                                 var not = match[3];
 565
 566                                 for ( var i = 0, l = not.length; i < l; i++ ) {
 567                                         if ( not[i] === elem ) {
 568                                                 return false;
 569                                         }
 570                                 }
 571
 572                                 return true;
 573                         }
 574                 },
 575                 ID: function(elem, match){
 576                         return elem.nodeType === 1 && elem.getAttribute("id") === match;
 577                 },
 578                 TAG: function(elem, match){
 579                         return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
 580                 },
 581                 CLASS: function(elem, match){
 582                         return match.test( elem.className );
 583                 },
 584                 ATTR: function(elem, match){
 585                         var name = match[1],
 586                                 result = Expr.attrHandle[ name ] ?
 587                                         Expr.attrHandle[ name ]( elem ) :
 588                                         elem[ name ] != null ?
 589                                                 elem[ name ] :
 590                                                 elem.getAttribute( name ),
 591                                 value = result + "",
 592                                 type = match[2],
 593                                 check = match[4];
 594
 595                         return result == null ?
 596                                 type === "!=" :
 597                                 type === "=" ?
 598                                 value === check :
 599                                 type === "*=" ?
 600                                 value.indexOf(check) >= 0 :
 601                                 type === "~=" ?
 602                                 (" " + value + " ").indexOf(check) >= 0 :
 603                                 !check ?
 604                                 value && result !== false :
 605                                 type === "!=" ?
 606                                 value != check :
 607                                 type === "^=" ?
 608                                 value.indexOf(check) === 0 :
 609                                 type === "$=" ?
 610                                 value.substr(value.length - check.length) === check :
 611                                 type === "|=" ?
 612                                 value === check || value.substr(0, check.length + 1) === check + "-" :
 613                                 false;
 614                 },
 615                 POS: function(elem, match, i, array){
 616                         var name = match[2], filter = Expr.setFilters[ name ];
 617
 618                         if ( filter ) {
 619                                 return filter( elem, i, match, array );
 620                         }
 621                 }
 622         }
 623 };
 624
 625 var origPOS = Expr.match.POS;
 626
 627 for ( var type in Expr.match ) {
 628         Expr.match[ type ] = RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
 629 }
 630
 631 var makeArray = function(array, results) {
 632         array = Array.prototype.slice.call( array );
 633
 634         if ( results ) {
 635                 results.push.apply( results, array );
 636                 return results;
 637         }
 638
 639         return array;
 640 };
 641
 642 // Perform a simple check to determine if the browser is capable of
 643 // converting a NodeList to an array using builtin methods.
 644 try {
 645         Array.prototype.slice.call( document.documentElement.childNodes );
 646
 647 // Provide a fallback method if it does not work
 648 } catch(e){
 649         makeArray = function(array, results) {
 650                 var ret = results || [];
 651
 652                 if ( toString.call(array) === "[object Array]" ) {
 653                         Array.prototype.push.apply( ret, array );
 654                 } else {
 655                         if ( typeof array.length === "number" ) {
 656                                 for ( var i = 0, l = array.length; i < l; i++ ) {
 657                                         ret.push( array[i] );
 658                                 }
 659                         } else {
 660                                 for ( var i = 0; array[i]; i++ ) {
 661                                         ret.push( array[i] );
 662                                 }
 663                         }
 664                 }
 665
 666                 return ret;
 667         };
 668 }
 669
 670 var sortOrder;
 671
 672 if ( Array.prototype.indexOf ) {
 673         var indexOf = Array.prototype.indexOf,
 674                 allSort = document.getElementsByTagName("*");
 675
 676         sortOrder = function( a, b ) {
 677                 var ret = indexOf.call( allSort, a ) - indexOf.call( allSort, b );
 678                 if ( ret === 0 ) {
 679                         hasDuplicate = true;
 680                 }
 681                 return ret;
 682         };
 683 } else if ( document.documentElement.sourceIndex === 1 ) {
 684         sortOrder = function( a, b ) {
 685                 var ret = a.sourceIndex - b.sourceIndex;
 686                 if ( ret === 0 ) {
 687                         hasDuplicate = true;
 688                 }
 689                 return ret;
 690         };
 691 }
 692
 693 // Check to see if the browser returns elements by name when
 694 // querying by getElementById (and provide a workaround)
 695 (function(){
 696         // We're going to inject a fake input element with a specified name
 697         var form = document.createElement("form"),
 698                 id = "script" + (new Date).getTime();
 699         form.innerHTML = "<input name='" + id + "'/>";
 700
 701         // Inject it into the root element, check its status, and remove it quickly
 702         var root = document.documentElement;
 703         root.insertBefore( form, root.firstChild );
 704
 705         // The workaround has to do additional checks after a getElementById
 706         // Which slows things down for other browsers (hence the branching)
 707         if ( !!document.getElementById( id ) ) {
 708                 Expr.find.ID = function(match, context, isXML){
 709                         if ( typeof context.getElementById !== "undefined" && !isXML ) {
 710                                 var m = context.getElementById(match[1]);
 711                                 return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
 712                         }
 713                 };
 714
 715                 Expr.filter.ID = function(elem, match){
 716                         var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
 717                         return elem.nodeType === 1 && node && node.nodeValue === match;
 718                 };
 719         }
 720
 721         root.removeChild( form );
 722 })();
 723
 724 (function(){
 725         // Check to see if the browser returns only elements
 726         // when doing getElementsByTagName("*")
 727
 728         // Create a fake element
 729         var div = document.createElement("div");
 730         div.appendChild( document.createComment("") );
 731
 732         // Make sure no comments are found
 733         if ( div.getElementsByTagName("*").length > 0 ) {
 734                 Expr.find.TAG = function(match, context){
 735                         var results = context.getElementsByTagName(match[1]);
 736
 737                         // Filter out possible comments
 738                         if ( match[1] === "*" ) {
 739                                 var tmp = [];
 740
 741                                 for ( var i = 0; results[i]; i++ ) {
 742                                         if ( results[i].nodeType === 1 ) {
 743                                                 tmp.push( results[i] );
 744                                         }
 745                                 }
 746
 747                                 results = tmp;
 748                         }
 749
 750                         return results;
 751                 };
 752         }
 753
 754         // Check to see if an attribute returns normalized href attributes
 755         div.innerHTML = "<a href='#'></a>";
 756         if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
 757                         div.firstChild.getAttribute("href") !== "#" ) {
 758                 Expr.attrHandle.href = function(elem){
 759                         return elem.getAttribute("href", 2);
 760                 };
 761         }
 762 })();
 763
 764 if ( document.querySelectorAll ) (function(){
 765         var oldSizzle = Sizzle, div = document.createElement("div");
 766         div.innerHTML = "<p class='TEST'></p>";
 767
 768         // Safari can't handle uppercase or unicode characters when
 769         // in quirks mode.
 770         if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
 771                 return;
 772         }
 773
 774         Sizzle = function(query, context, extra, seed){
 775                 context = context || document;
 776
 777                 // Only use querySelectorAll on non-XML documents
 778                 // (ID selectors don't work in non-HTML documents)
 779                 if ( !seed && context.nodeType === 9 && !isXML(context) ) {
 780                         try {
 781                                 return makeArray( context.querySelectorAll(query), extra );
 782                         } catch(e){}
 783                 }
 784
 785                 return oldSizzle(query, context, extra, seed);
 786         };
 787
 788         Sizzle.find = oldSizzle.find;
 789         Sizzle.filter = oldSizzle.filter;
 790         Sizzle.selectors = oldSizzle.selectors;
 791         Sizzle.matches = oldSizzle.matches;
 792 })();
 793
 794 if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){
 795         var div = document.createElement("div");
 796         div.innerHTML = "<div class='test e'></div><div class='test'></div>";
 797
 798         // Opera can't find a second classname (in 9.6)
 799         if ( div.getElementsByClassName("e").length === 0 )
 800                 return;
 801
 802         // Safari caches class attributes, doesn't catch changes (in 3.2)
 803         div.lastChild.className = "e";
 804
 805         if ( div.getElementsByClassName("e").length === 1 )
 806                 return;
 807
 808         Expr.order.splice(1, 0, "CLASS");
 809         Expr.find.CLASS = function(match, context) {
 810                 return context.getElementsByClassName(match[1]);
 811         };
 812 })();
 813
 814 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
 815         var sibDir = dir == "previousSibling" && !isXML;
 816         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 817                 var elem = checkSet[i];
 818                 if ( elem ) {
 819                         if ( sibDir && elem.nodeType === 1 ){
 820                                 elem.sizcache = doneName;
 821                                 elem.sizset = i;
 822                         }
 823                         elem = elem[dir];
 824                         var match = false;
 825
 826                         while ( elem ) {
 827                                 if ( elem.sizcache === doneName ) {
 828                                         match = checkSet[elem.sizset];
 829                                         break;
 830                                 }
 831
 832                                 if ( elem.nodeType === 1 && !isXML ){
 833                                         elem.sizcache = doneName;
 834                                         elem.sizset = i;
 835                                 }
 836
 837                                 if ( elem.nodeName === cur ) {
 838                                         match = elem;
 839                                         break;
 840                                 }
 841
 842                                 elem = elem[dir];
 843                         }
 844
 845                         checkSet[i] = match;
 846                 }
 847         }
 848 }
 849
 850 function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
 851         var sibDir = dir == "previousSibling" && !isXML;
 852         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 853                 var elem = checkSet[i];
 854                 if ( elem ) {
 855                         if ( sibDir && elem.nodeType === 1 ) {
 856                                 elem.sizcache = doneName;
 857                                 elem.sizset = i;
 858                         }
 859                         elem = elem[dir];
 860                         var match = false;
 861
 862                         while ( elem ) {
 863                                 if ( elem.sizcache === doneName ) {
 864                                         match = checkSet[elem.sizset];
 865                                         break;
 866                                 }
 867
 868                                 if ( elem.nodeType === 1 ) {
 869                                         if ( !isXML ) {
 870                                                 elem.sizcache = doneName;
 871                                                 elem.sizset = i;
 872                                         }
 873                                         if ( typeof cur !== "string" ) {
 874                                                 if ( elem === cur ) {
 875                                                         match = true;
 876                                                         break;
 877                                                 }
 878
 879                                         } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
 880                                                 match = elem;
 881                                                 break;
 882                                         }
 883                                 }
 884
 885                                 elem = elem[dir];
 886                         }
 887
 888                         checkSet[i] = match;
 889                 }
 890         }
 891 }
 892
 893 var contains = document.compareDocumentPosition ?  function(a, b){
 894         return a.compareDocumentPosition(b) & 16;
 895 } : function(a, b){
 896         return a !== b && (a.contains ? a.contains(b) : true);
 897 };
 898
 899 var isXML = function(elem){
 900         return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
 901                 !!elem.ownerDocument && isXML( elem.ownerDocument );
 902 };
 903
 904 var posProcess = function(selector, context){
 905         var tmpSet = [], later = "", match,
 906                 root = context.nodeType ? [context] : context;
 907
 908         // Position selectors must be done after the filter
 909         // And so must :not(positional) so we move all PSEUDOs to the end
 910         while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
 911                 later += match[0];
 912                 selector = selector.replace( Expr.match.PSEUDO, "" );
 913         }
 914
 915         selector = Expr.relative[selector] ? selector + "*" : selector;
 916
 917         for ( var i = 0, l = root.length; i < l; i++ ) {
 918                 Sizzle( selector, root[i], tmpSet );
 919         }
 920
 921         return Sizzle.filter( later, tmpSet );
 922 };
 923
 924 // EXPOSE
 925 jQuery.find = Sizzle;
 926 jQuery.filter = Sizzle.filter;
 927 jQuery.expr = Sizzle.selectors;
 928 jQuery.expr[":"] = jQuery.expr.filters;
 929
 930 Sizzle.selectors.filters.hidden = function(elem){
 931         return "hidden" === elem.type ||
 932                 jQuery.css(elem, "display") === "none" ||
 933                 jQuery.css(elem, "visibility") === "hidden";
 934 };
 935
 936 Sizzle.selectors.filters.visible = function(elem){
 937         return "hidden" !== elem.type &&
 938                 jQuery.css(elem, "display") !== "none" &&
 939                 jQuery.css(elem, "visibility") !== "hidden";
 940 };
 941
 942 Sizzle.selectors.filters.animated = function(elem){
 943         return jQuery.grep(jQuery.timers, function(fn){
 944                 return elem === fn.elem;
 945         }).length;
 946 };
 947
 948 jQuery.multiFilter = function( expr, elems, not ) {
 949         if ( not ) {
 950                 expr = ":not(" + expr + ")";
 951         }
 952
 953         return Sizzle.matches(expr, elems);
 954 };
 955
 956 jQuery.dir = function( elem, dir ){
 957         var matched = [], cur = elem[dir];
 958         while ( cur && cur != document ) {
 959                 if ( cur.nodeType == 1 )
 960                         matched.push( cur );
 961                 cur = cur[dir];
 962         }
 963         return matched;
 964 };
 965
 966 jQuery.nth = function(cur, result, dir, elem){
 967         result = result || 1;
 968         var num = 0;
 969
 970         for ( ; cur; cur = cur[dir] )
 971                 if ( cur.nodeType == 1 && ++num == result )
 972                         break;
 973
 974         return cur;
 975 };
 976
 977 jQuery.sibling = function(n, elem){
 978         var r = [];
 979
 980         for ( ; n; n = n.nextSibling ) {
 981                 if ( n.nodeType == 1 && n != elem )
 982                         r.push( n );
 983         }
 984
 985         return r;
 986 };
 987
 988 return;
 989
 990 window.Sizzle = Sizzle;
 991
 992 })();