src/selector.js

   1 /*!
   2  * Sizzle CSS Selector Engine - v0.9.1
   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 && Expr.match.POS.exec( selector ) ) {
  39                 if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
  40                         var later = "", match;
  41
  42                         // Position selectors must be done after the filter
  43                         while ( (match = Expr.match.POS.exec( selector )) ) {
  44                                 later += match[0];
  45                                 selector = selector.replace( Expr.match.POS, "" );
  46                         }
  47
  48                         set = Sizzle.filter( later, Sizzle( selector, context ) );
  49                 } else {
  50                         set = Expr.relative[ parts[0] ] ?
  51                                 [ context ] :
  52                                 Sizzle( parts.shift(), context );
  53
  54                         while ( parts.length ) {
  55                                 var tmpSet = [];
  56
  57                                 selector = parts.shift();
  58                                 if ( Expr.relative[ selector ] )
  59                                         selector += parts.shift();
  60
  61                                 for ( var i = 0, l = set.length; i < l; i++ ) {
  62                                         Sizzle( selector, set[i], tmpSet );
  63                                 }
  64
  65                                 set = tmpSet;
  66                         }
  67                 }
  68         } else {
  69                 var ret = seed ?
  70                         { expr: parts.pop(), set: makeArray(seed) } :
  71                         Sizzle.find( parts.pop(), parts.length === 1 && context.parentNode ? context.parentNode : context );
  72                 set = Sizzle.filter( ret.expr, ret.set );
  73
  74                 if ( parts.length > 0 ) {
  75                         checkSet = makeArray(set);
  76                 } else {
  77                         prune = false;
  78                 }
  79
  80                 while ( parts.length ) {
  81                         var cur = parts.pop(), pop = cur;
  82
  83                         if ( !Expr.relative[ cur ] ) {
  84                                 cur = "";
  85                         } else {
  86                                 pop = parts.pop();
  87                         }
  88
  89                         if ( pop == null ) {
  90                                 pop = context;
  91                         }
  92
  93                         Expr.relative[ cur ]( checkSet, pop, isXML(context) );
  94                 }
  95         }
  96
  97         if ( !checkSet ) {
  98                 checkSet = set;
  99         }
 100
 101         if ( !checkSet ) {
 102                 throw "Syntax error, unrecognized expression: " + (cur || selector);
 103         }
 104
 105         if ( toString.call(checkSet) === "[object Array]" ) {
 106                 if ( !prune ) {
 107                         results.push.apply( results, checkSet );
 108                 } else if ( context.nodeType === 1 ) {
 109                         for ( var i = 0; checkSet[i] != null; i++ ) {
 110                                 if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
 111                                         results.push( set[i] );
 112                                 }
 113                         }
 114                 } else {
 115                         for ( var i = 0; checkSet[i] != null; i++ ) {
 116                                 if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
 117                                         results.push( set[i] );
 118                                 }
 119                         }
 120                 }
 121         } else {
 122                 makeArray( checkSet, results );
 123         }
 124
 125         if ( extra ) {
 126                 Sizzle( extra, context, results, seed );
 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){
 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 );
 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 ], goodArray = null, goodPos = 0, 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                                         } else if ( match[0] === true ) {
 188                                                 goodArray = [];
 189                                                 var last = null, elem;
 190                                                 for ( var i = 0; (elem = curLoop[i]) !== undefined; i++ ) {
 191                                                         if ( elem && last !== elem ) {
 192                                                                 goodArray.push( elem );
 193                                                                 last = elem;
 194                                                         }
 195                                                 }
 196                                         }
 197                                 }
 198
 199                                 if ( match ) {
 200                                         for ( var i = 0; (item = curLoop[i]) !== undefined; i++ ) {
 201                                                 if ( item ) {
 202                                                         if ( goodArray && item != goodArray[goodPos] ) {
 203                                                                 goodPos++;
 204                                                         }
 205
 206                                                         found = filter( item, match, goodPos, goodArray );
 207                                                         var pass = not ^ !!found;
 208
 209                                                         if ( inplace && found != null ) {
 210                                                                 if ( pass ) {
 211                                                                         anyFound = true;
 212                                                                 } else {
 213                                                                         curLoop[i] = false;
 214                                                                 }
 215                                                         } else if ( pass ) {
 216                                                                 result.push( item );
 217                                                                 anyFound = true;
 218                                                         }
 219                                                 }
 220                                         }
 221                                 }
 222
 223                                 if ( found !== undefined ) {
 224                                         if ( !inplace ) {
 225                                                 curLoop = result;
 226                                         }
 227
 228                                         expr = expr.replace( Expr.match[ type ], "" );
 229
 230                                         if ( !anyFound ) {
 231                                                 return [];
 232                                         }
 233
 234                                         break;
 235                                 }
 236                         }
 237                 }
 238
 239                 expr = expr.replace(/\s*,\s*/, "");
 240
 241                 // Improper expression
 242                 if ( expr == old ) {
 243                         if ( anyFound == null ) {
 244                                 throw "Syntax error, unrecognized expression: " + expr;
 245                         } else {
 246                                 break;
 247                         }
 248                 }
 249
 250                 old = expr;
 251         }
 252
 253         return curLoop;
 254 };
 255
 256 var Expr = Sizzle.selectors = {
 257         order: [ "ID", "NAME", "TAG" ],
 258         match: {
 259                 ID: /#((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 260                 CLASS: /\.((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
 261                 NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF_-]|\\.)+)['"]*\]/,
 262                 ATTR: /\[((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\]/,
 263                 TAG: /^((?:[\w\u00c0-\uFFFF\*_-]|\\.)+)/,
 264                 CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
 265                 POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
 266                 PSEUDO: /:((?:[\w\u00c0-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
 267         },
 268         attrMap: {
 269                 "class": "className",
 270                 "for": "htmlFor"
 271         },
 272         relative: {
 273                 "+": function(checkSet, part){
 274                         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 275                                 var elem = checkSet[i];
 276                                 if ( elem ) {
 277                                         var cur = elem.previousSibling;
 278                                         while ( cur && cur.nodeType !== 1 ) {
 279                                                 cur = cur.previousSibling;
 280                                         }
 281                                         checkSet[i] = typeof part === "string" ?
 282                                                 cur || false :
 283                                                 cur === part;
 284                                 }
 285                         }
 286
 287                         if ( typeof part === "string" ) {
 288                                 Sizzle.filter( part, checkSet, true );
 289                         }
 290                 },
 291                 ">": function(checkSet, part, isXML){
 292                         if ( typeof part === "string" && !/\W/.test(part) ) {
 293                                 part = isXML ? part : part.toUpperCase();
 294
 295                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 296                                         var elem = checkSet[i];
 297                                         if ( elem ) {
 298                                                 var parent = elem.parentNode;
 299                                                 checkSet[i] = parent.nodeName === part ? parent : false;
 300                                         }
 301                                 }
 302                         } else {
 303                                 for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 304                                         var elem = checkSet[i];
 305                                         if ( elem ) {
 306                                                 checkSet[i] = typeof part === "string" ?
 307                                                         elem.parentNode :
 308                                                         elem.parentNode === part;
 309                                         }
 310                                 }
 311
 312                                 if ( typeof part === "string" ) {
 313                                         Sizzle.filter( part, checkSet, true );
 314                                 }
 315                         }
 316                 },
 317                 "": function(checkSet, part, isXML){
 318                         var doneName = "done" + (done++), checkFn = dirCheck;
 319
 320                         if ( !part.match(/\W/) ) {
 321                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 322                                 checkFn = dirNodeCheck;
 323                         }
 324
 325                         checkFn("parentNode", part, doneName, checkSet, nodeCheck);
 326                 },
 327                 "~": function(checkSet, part, isXML){
 328                         var doneName = "done" + (done++), checkFn = dirCheck;
 329
 330                         if ( typeof part === "string" && !part.match(/\W/) ) {
 331                                 var nodeCheck = part = isXML ? part : part.toUpperCase();
 332                                 checkFn = dirNodeCheck;
 333                         }
 334
 335                         checkFn("previousSibling", part, doneName, checkSet, nodeCheck);
 336                 }
 337         },
 338         find: {
 339                 ID: function(match, context){
 340                         if ( context.getElementById ) {
 341                                 var m = context.getElementById(match[1]);
 342                                 return m ? [m] : [];
 343                         }
 344                 },
 345                 NAME: function(match, context){
 346                         return context.getElementsByName ? context.getElementsByName(match[1]) : null;
 347                 },
 348                 TAG: function(match, context){
 349                         return context.getElementsByTagName(match[1]);
 350                 }
 351         },
 352         preFilter: {
 353                 CLASS: function(match, curLoop, inplace, result, not){
 354                         match = " " + match[1].replace(/\\/g, "") + " ";
 355
 356                         for ( var i = 0; curLoop[i]; i++ ) {
 357                                 if ( not ^ (" " + curLoop[i].className + " ").indexOf(match) >= 0 ) {
 358                                         if ( !inplace )
 359                                                 result.push( curLoop[i] );
 360                                 } else if ( inplace ) {
 361                                         curLoop[i] = false;
 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]; i++ ){}
 372                         return 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" + (done++);
 388
 389                         return match;
 390                 },
 391                 ATTR: function(match){
 392                         var name = match[1];
 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 ) {
 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], parent = elem.parentNode;
 515
 516                         var doneName = "child" + parent.childNodes.length;
 517
 518                         if ( parent && (!parent[ doneName ] || !elem.nodeIndex) ) {
 519                                 var count = 1;
 520
 521                                 for ( var node = parent.firstChild; node; node = node.nextSibling ) {
 522                                         if ( node.nodeType == 1 ) {
 523                                                 node.nodeIndex = count++;
 524                                         }
 525                                 }
 526
 527                                 parent[ doneName ] = count - 1;
 528                         }
 529
 530                         if ( type == "first" ) {
 531                                 return elem.nodeIndex == 1;
 532                         } else if ( type == "last" ) {
 533                                 return elem.nodeIndex == parent[ doneName ];
 534                         } else if ( type == "only" ) {
 535                                 return parent[ doneName ] == 1;
 536                         } else if ( type == "nth" ) {
 537                                 var add = false, first = match[2], last = match[3];
 538
 539                                 if ( first == 1 && last == 0 ) {
 540                                         return true;
 541                                 }
 542
 543                                 if ( first == 0 ) {
 544                                         if ( elem.nodeIndex == last ) {
 545                                                 add = true;
 546                                         }
 547                                 } else if ( (elem.nodeIndex - last) % first == 0 && (elem.nodeIndex - last) / first >= 0 ) {
 548                                         add = true;
 549                                 }
 550
 551                                 return add;
 552                         }
 553                 },
 554                 PSEUDO: function(elem, match, i, array){
 555                         var name = match[1], filter = Expr.filters[ name ];
 556
 557                         if ( filter ) {
 558                                 return filter( elem, i, match, array );
 559                         } else if ( name === "contains" ) {
 560                                 return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
 561                         } else if ( name === "not" ) {
 562                                 var not = match[3];
 563
 564                                 for ( var i = 0, l = not.length; i < l; i++ ) {
 565                                         if ( not[i] === elem ) {
 566                                                 return false;
 567                                         }
 568                                 }
 569
 570                                 return true;
 571                         }
 572                 },
 573                 ID: function(elem, match){
 574                         return elem.nodeType === 1 && elem.getAttribute("id") === match;
 575                 },
 576                 TAG: function(elem, match){
 577                         return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
 578                 },
 579                 CLASS: function(elem, match){
 580                         return match.test( elem.className );
 581                 },
 582                 ATTR: function(elem, match){
 583                         var result = elem[ match[1] ] || elem.getAttribute( match[1] ), value = result + "", type = match[2], check = match[4];
 584                         return result == null ?
 585                                 false :
 586                                 type === "=" ?
 587                                 value === check :
 588                                 type === "*=" ?
 589                                 value.indexOf(check) >= 0 :
 590                                 type === "~=" ?
 591                                 (" " + value + " ").indexOf(check) >= 0 :
 592                                 !match[4] ?
 593                                 result :
 594                                 type === "!=" ?
 595                                 value != check :
 596                                 type === "^=" ?
 597                                 value.indexOf(check) === 0 :
 598                                 type === "$=" ?
 599                                 value.substr(value.length - check.length) === check :
 600                                 type === "|=" ?
 601                                 value === check || value.substr(0, check.length + 1) === check + "-" :
 602                                 false;
 603                 },
 604                 POS: function(elem, match, i, array){
 605                         var name = match[2], filter = Expr.setFilters[ name ];
 606
 607                         if ( filter ) {
 608                                 return filter( elem, i, match, array );
 609                         }
 610                 }
 611         }
 612 };
 613
 614 for ( var type in Expr.match ) {
 615         Expr.match[ type ] = RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
 616 }
 617
 618 var makeArray = function(array, results) {
 619         array = Array.prototype.slice.call( array );
 620
 621         if ( results ) {
 622                 results.push.apply( results, array );
 623                 return results;
 624         }
 625
 626         return array;
 627 };
 628
 629 // Perform a simple check to determine if the browser is capable of
 630 // converting a NodeList to an array using builtin methods.
 631 try {
 632         Array.prototype.slice.call( document.documentElement.childNodes );
 633
 634 // Provide a fallback method if it does not work
 635 } catch(e){
 636         makeArray = function(array, results) {
 637                 var ret = results || [];
 638
 639                 if ( toString.call(array) === "[object Array]" ) {
 640                         Array.prototype.push.apply( ret, array );
 641                 } else {
 642                         if ( typeof array.length === "number" ) {
 643                                 for ( var i = 0, l = array.length; i < l; i++ ) {
 644                                         ret.push( array[i] );
 645                                 }
 646                         } else {
 647                                 for ( var i = 0; array[i]; i++ ) {
 648                                         ret.push( array[i] );
 649                                 }
 650                         }
 651                 }
 652
 653                 return ret;
 654         };
 655 }
 656
 657 // Check to see if the browser returns elements by name when
 658 // querying by getElementById (and provide a workaround)
 659 (function(){
 660         // We're going to inject a fake input element with a specified name
 661         var form = document.createElement("form"),
 662                 id = "script" + (new Date).getTime();
 663         form.innerHTML = "<input name='" + id + "'/>";
 664
 665         // Inject it into the root element, check its status, and remove it quickly
 666         var root = document.documentElement;
 667         root.insertBefore( form, root.firstChild );
 668
 669         // The workaround has to do additional checks after a getElementById
 670         // Which slows things down for other browsers (hence the branching)
 671         if ( !!document.getElementById( id ) ) {
 672                 Expr.find.ID = function(match, context){
 673                         if ( context.getElementById ) {
 674                                 var m = context.getElementById(match[1]);
 675                                 return m ? m.id === match[1] || m.getAttributeNode && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
 676                         }
 677                 };
 678
 679                 Expr.filter.ID = function(elem, match){
 680                         var node = elem.getAttributeNode && elem.getAttributeNode("id");
 681                         return elem.nodeType === 1 && node && node.nodeValue === match;
 682                 };
 683         }
 684
 685         root.removeChild( form );
 686 })();
 687
 688 // Check to see if the browser returns only elements
 689 // when doing getElementsByTagName("*")
 690 (function(){
 691         // Create a fake element
 692         var div = document.createElement("div");
 693         div.appendChild( document.createComment("") );
 694
 695         // Make sure no comments are found
 696         if ( div.getElementsByTagName("*").length > 0 ) {
 697                 Expr.find.TAG = function(match, context){
 698                         var results = context.getElementsByTagName(match[1]);
 699
 700                         // Filter out possible comments
 701                         if ( match[1] === "*" ) {
 702                                 var tmp = [];
 703
 704                                 for ( var i = 0; results[i]; i++ ) {
 705                                         if ( results[i].nodeType === 1 ) {
 706                                                 tmp.push( results[i] );
 707                                         }
 708                                 }
 709
 710                                 results = tmp;
 711                         }
 712
 713                         return results;
 714                 };
 715         }
 716 })();
 717
 718 if ( document.querySelectorAll ) (function(){
 719         var oldSizzle = Sizzle;
 720
 721         Sizzle = function(query, context, extra, seed){
 722                 context = context || document;
 723
 724                 if ( !seed && context.nodeType === 9 ) {
 725                         try {
 726                                 return makeArray( context.querySelectorAll(query), extra );
 727                         } catch(e){}
 728                 }
 729
 730                 return oldSizzle(query, context, extra, seed);
 731         };
 732
 733         Sizzle.find = oldSizzle.find;
 734         Sizzle.filter = oldSizzle.filter;
 735         Sizzle.selectors = oldSizzle.selectors;
 736         Sizzle.matches = oldSizzle.matches;
 737 })();
 738
 739 if ( document.documentElement.getElementsByClassName ) {
 740         Expr.order.splice(1, 0, "CLASS");
 741         Expr.find.CLASS = function(match, context) {
 742                 return context.getElementsByClassName(match[1]);
 743         };
 744 }
 745
 746 function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck ) {
 747         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 748                 var elem = checkSet[i];
 749                 if ( elem ) {
 750                         elem = elem[dir];
 751                         var match = false;
 752
 753                         while ( elem && elem.nodeType ) {
 754                                 var done = elem[doneName];
 755                                 if ( done ) {
 756                                         match = checkSet[ done ];
 757                                         break;
 758                                 }
 759
 760                                 if ( elem.nodeType === 1 )
 761                                         elem[doneName] = i;
 762
 763                                 if ( elem.nodeName === cur ) {
 764                                         match = elem;
 765                                         break;
 766                                 }
 767
 768                                 elem = elem[dir];
 769                         }
 770
 771                         checkSet[i] = match;
 772                 }
 773         }
 774 }
 775
 776 function dirCheck( dir, cur, doneName, checkSet, nodeCheck ) {
 777         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
 778                 var elem = checkSet[i];
 779                 if ( elem ) {
 780                         elem = elem[dir];
 781                         var match = false;
 782
 783                         while ( elem && elem.nodeType ) {
 784                                 if ( elem[doneName] ) {
 785                                         match = checkSet[ elem[doneName] ];
 786                                         break;
 787                                 }
 788
 789                                 if ( elem.nodeType === 1 ) {
 790                                         elem[doneName] = i;
 791
 792                                         if ( typeof cur !== "string" ) {
 793                                                 if ( elem === cur ) {
 794                                                         match = true;
 795                                                         break;
 796                                                 }
 797
 798                                         } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
 799                                                 match = elem;
 800                                                 break;
 801                                         }
 802                                 }
 803
 804                                 elem = elem[dir];
 805                         }
 806
 807                         checkSet[i] = match;
 808                 }
 809         }
 810 }
 811
 812 var contains = document.compareDocumentPosition ?  function(a, b){
 813         return a.compareDocumentPosition(b) & 16;
 814 } : function(a, b){
 815         return a !== b && (a.contains ? a.contains(b) : true);
 816 };
 817
 818 var isXML = function(elem){
 819         return elem.documentElement && !elem.body ||
 820                 elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
 821 };
 822
 823 // EXPOSE
 824 jQuery.find = Sizzle;
 825 jQuery.filter = Sizzle.filter;
 826 jQuery.expr = Sizzle.selectors;
 827 jQuery.expr[":"] = jQuery.expr.filters;
 828
 829 Sizzle.selectors.filters.hidden = function(elem){
 830         return "hidden" === elem.type ||
 831                 jQuery.css(elem, "display") === "none" ||
 832                 jQuery.css(elem, "visibility") === "hidden";
 833 };
 834
 835 Sizzle.selectors.filters.visible = function(elem){
 836         return "hidden" !== elem.type &&
 837                 jQuery.css(elem, "display") !== "none" &&
 838                 jQuery.css(elem, "visibility") !== "hidden";
 839 };
 840
 841 Sizzle.selectors.filters.animated = function(elem){
 842         return jQuery.grep(jQuery.timers, function(fn){
 843                 return elem === fn.elem;
 844         }).length;
 845 };
 846
 847 jQuery.multiFilter = function( expr, elems, not ) {
 848         if ( not ) {
 849                 expr = ":not(" + expr + ")";
 850         }
 851
 852         return Sizzle.matches(expr, elems);
 853 };
 854
 855 jQuery.dir = function( elem, dir ){
 856         var matched = [], cur = elem[dir];
 857         while ( cur && cur != document ) {
 858                 if ( cur.nodeType == 1 )
 859                         matched.push( cur );
 860                 cur = cur[dir];
 861         }
 862         return matched;
 863 };
 864
 865 jQuery.nth = function(cur, result, dir, elem){
 866         result = result || 1;
 867         var num = 0;
 868
 869         for ( ; cur; cur = cur[dir] )
 870                 if ( cur.nodeType == 1 && ++num == result )
 871                         break;
 872
 873         return cur;
 874 };
 875
 876 jQuery.sibling = function(n, elem){
 877         var r = [];
 878
 879         for ( ; n; n = n.nextSibling ) {
 880                 if ( n.nodeType == 1 && n != elem )
 881                         r.push( n );
 882         }
 883
 884         return r;
 885 };
 886
 887 return;
 888
 889 window.Sizzle = Sizzle;
 890
 891 })();