skins/common/wikibits.js

   1 // MediaWiki JavaScript support functions
   2
   3 var clientPC = navigator.userAgent.toLowerCase(); // Get client info
   4 var is_gecko = /gecko/.test( clientPC ) &&
   5         !/khtml|spoofer|netscape\/7\.0/.test(clientPC);
   6 var webkit_match = clientPC.match(/applewebkit\/(\d+)/);
   7 if (webkit_match) {
   8         var is_safari = clientPC.indexOf('applewebkit') != -1 &&
   9                 clientPC.indexOf('spoofer') == -1;
  10         var is_safari_win = is_safari && clientPC.indexOf('windows') != -1;
  11         var webkit_version = parseInt(webkit_match[1]);
  12         // Tests for chrome here, to avoid breaking old scripts safari left alone
  13         // This is here for accesskeys
  14         var is_chrome = clientPC.indexOf('chrome') !== -1 &&
  15                 clientPC.indexOf('spoofer') === -1;
  16         var is_chrome_mac = is_chrome && clientPC.indexOf('mac') !== -1
  17 }
  18 // For accesskeys; note that FF3+ is included here!
  19 var is_ff2 = /firefox\/[2-9]|minefield\/3/.test( clientPC );
  20 var ff2_bugs = /firefox\/2/.test( clientPC );
  21 // These aren't used here, but some custom scripts rely on them
  22 var is_ff2_win = is_ff2 && clientPC.indexOf('windows') != -1;
  23 var is_ff2_x11 = is_ff2 && clientPC.indexOf('x11') != -1;
  24 if (clientPC.indexOf('opera') != -1) {
  25         var is_opera = true;
  26         var is_opera_preseven = window.opera && !document.childNodes;
  27         var is_opera_seven = window.opera && document.childNodes;
  28         var is_opera_95 = /opera\/(9\.[5-9]|[1-9][0-9])/.test( clientPC );
  29         var opera6_bugs = is_opera_preseven;
  30         var opera7_bugs = is_opera_seven && !is_opera_95;
  31         var opera95_bugs = /opera\/(9\.5)/.test( clientPC );
  32 }
  33 // As recommended by <http://msdn.microsoft.com/en-us/library/ms537509.aspx>,
  34 // avoiding false positives from moronic extensions that append to the IE UA
  35 // string (bug 23171)
  36 var ie6_bugs = false;
  37 if ( /MSIE ([0-9]{1,}[\.0-9]{0,})/.exec( clientPC ) != null
  38 && parseFloat( RegExp.$1 ) <= 6.0 ) {
  39         ie6_bugs = true;
  40 }
  41
  42 // Global external objects used by this script.
  43 /*extern ta, stylepath, skin */
  44
  45 // add any onload functions in this hook (please don't hard-code any events in the xhtml source)
  46 var doneOnloadHook;
  47
  48 if (!window.onloadFuncts) {
  49         var onloadFuncts = [];
  50 }
  51
  52 function addOnloadHook( hookFunct ) {
  53         // Allows add-on scripts to add onload functions
  54         if( !doneOnloadHook ) {
  55                 onloadFuncts[onloadFuncts.length] = hookFunct;
  56         } else {
  57                 hookFunct();  // bug in MSIE script loading
  58         }
  59 }
  60
  61 function hookEvent( hookName, hookFunct ) {
  62         addHandler( window, hookName, hookFunct );
  63 }
  64
  65 function importScript( page ) {
  66         // TODO: might want to introduce a utility function to match wfUrlencode() in PHP
  67         var uri = wgScript + '?title=' +
  68                 encodeURIComponent(page.replace(/ /g,'_')).replace(/%2F/ig,'/').replace(/%3A/ig,':') +
  69                 '&action=raw&ctype=text/javascript';
  70         return importScriptURI( uri );
  71 }
  72
  73 var loadedScripts = {}; // included-scripts tracker
  74 function importScriptURI( url ) {
  75         if ( loadedScripts[url] ) {
  76                 return null;
  77         }
  78         loadedScripts[url] = true;
  79         var s = document.createElement( 'script' );
  80         s.setAttribute( 'src', url );
  81         s.setAttribute( 'type', 'text/javascript' );
  82         document.getElementsByTagName('head')[0].appendChild( s );
  83         return s;
  84 }
  85
  86 function importStylesheet( page ) {
  87         return importStylesheetURI( wgScript + '?action=raw&ctype=text/css&title=' + encodeURIComponent( page.replace(/ /g,'_') ) );
  88 }
  89
  90 function importStylesheetURI( url, media ) {
  91         var l = document.createElement( 'link' );
  92         l.type = 'text/css';
  93         l.rel = 'stylesheet';
  94         l.href = url;
  95         if( media ) {
  96                 l.media = media;
  97         }
  98         document.getElementsByTagName('head')[0].appendChild( l );
  99         return l;
 100 }
 101
 102 function appendCSS( text ) {
 103         var s = document.createElement( 'style' );
 104         s.type = 'text/css';
 105         s.rel = 'stylesheet';
 106         if ( s.styleSheet ) {
 107                 s.styleSheet.cssText = text; // IE
 108         } else {
 109                 s.appendChild( document.createTextNode( text + '' ) ); // Safari sometimes borks on null
 110         }
 111         document.getElementsByTagName('head')[0].appendChild( s );
 112         return s;
 113 }
 114
 115 // Special stylesheet links for Monobook only (see bug 14717)
 116 if ( typeof stylepath != 'undefined' && skin == 'monobook' ) {
 117         if ( opera6_bugs ) {
 118                 importStylesheetURI( stylepath + '/' + skin + '/Opera6Fixes.css' );
 119         } else if ( opera7_bugs ) {
 120                 importStylesheetURI( stylepath + '/' + skin + '/Opera7Fixes.css' );
 121         } else if ( opera95_bugs ) {
 122                 importStylesheetURI( stylepath + '/' + skin + '/Opera9Fixes.css' );
 123         } else if ( ff2_bugs ) {
 124                 importStylesheetURI( stylepath + '/' + skin + '/FF2Fixes.css' );
 125         }
 126 }
 127
 128
 129 if ( wgBreakFrames ) {
 130         // Un-trap us from framesets
 131         if ( window.top != window ) {
 132                 window.top.location = window.location;
 133         }
 134 }
 135
 136 function showTocToggle() {
 137         if ( document.createTextNode ) {
 138                 // Uses DOM calls to avoid document.write + XHTML issues
 139
 140                 var linkHolder = document.getElementById( 'toctitle' );
 141                 var existingLink = document.getElementById( 'togglelink' );
 142                 if ( !linkHolder || existingLink ) {
 143                         // Don't add the toggle link twice
 144                         return;
 145                 }
 146
 147                 var outerSpan = document.createElement( 'span' );
 148                 outerSpan.className = 'toctoggle';
 149
 150                 var toggleLink = document.createElement( 'a' );
 151                 toggleLink.id = 'togglelink';
 152                 toggleLink.className = 'internal';
 153                 toggleLink.href = '#';
 154                 addClickHandler( toggleLink, function( evt ) { toggleToc(); return killEvt( evt ); } );
 155
 156                 toggleLink.appendChild( document.createTextNode( tocHideText ) );
 157
 158                 outerSpan.appendChild( document.createTextNode( '[' ) );
 159                 outerSpan.appendChild( toggleLink );
 160                 outerSpan.appendChild( document.createTextNode( ']' ) );
 161
 162                 linkHolder.appendChild( document.createTextNode( ' ' ) );
 163                 linkHolder.appendChild( outerSpan );
 164
 165                 var cookiePos = document.cookie.indexOf( "hidetoc=" );
 166                 if ( cookiePos > -1 && document.cookie.charAt( cookiePos + 8 ) == 1 ) {
 167                         toggleToc();
 168                 }
 169         }
 170 }
 171
 172 function changeText( el, newText ) {
 173         // Safari work around
 174         if ( el.innerText ) {
 175                 el.innerText = newText;
 176         } else if ( el.firstChild && el.firstChild.nodeValue ) {
 177                 el.firstChild.nodeValue = newText;
 178         }
 179 }
 180
 181 function killEvt( evt ) {
 182         evt = evt || window.event || window.Event; // W3C, IE, Netscape
 183         if ( typeof ( evt.preventDefault ) != 'undefined' ) {
 184                 evt.preventDefault(); // Don't follow the link
 185                 evt.stopPropagation();
 186         } else {
 187                 evt.cancelBubble = true; // IE
 188         }
 189         return false; // Don't follow the link (IE)
 190 }
 191
 192 function toggleToc() {
 193         var tocmain = document.getElementById( 'toc' );
 194         var toc = document.getElementById('toc').getElementsByTagName('ul')[0];
 195         var toggleLink = document.getElementById( 'togglelink' );
 196
 197         if ( toc && toggleLink && toc.style.display == 'none' ) {
 198                 changeText( toggleLink, tocHideText );
 199                 toc.style.display = 'block';
 200                 document.cookie = "hidetoc=0";
 201                 tocmain.className = 'toc';
 202         } else {
 203                 changeText( toggleLink, tocShowText );
 204                 toc.style.display = 'none';
 205                 document.cookie = "hidetoc=1";
 206                 tocmain.className = 'toc tochidden';
 207         }
 208         return false;
 209 }
 210
 211 var mwEditButtons = [];
 212 var mwCustomEditButtons = []; // eg to add in MediaWiki:Common.js
 213
 214 function escapeQuotes( text ) {
 215         var re = new RegExp( "'", "g" );
 216         text = text.replace( re, "\\'" );
 217         re = new RegExp( "\\n", "g" );
 218         text = text.replace( re, "\\n" );
 219         return escapeQuotesHTML( text );
 220 }
 221
 222 function escapeQuotesHTML( text ) {
 223         var re = new RegExp( '&', "g" );
 224         text = text.replace( re, "&amp;" );
 225         re = new RegExp( '"', "g" );
 226         text = text.replace( re, "&quot;" );
 227         re = new RegExp( '<', "g" );
 228         text = text.replace( re, "&lt;" );
 229         re = new RegExp( '>', "g" );
 230         text = text.replace( re, "&gt;" );
 231         return text;
 232 }
 233
 234 /**
 235  * Set the accesskey prefix based on browser detection.
 236  */
 237 var tooltipAccessKeyPrefix = 'alt-';
 238 if ( is_opera ) {
 239         tooltipAccessKeyPrefix = 'shift-esc-';
 240 } else if ( is_chrome ) {
 241         tooltipAccessKeyPrefix = is_chrome_mac ? 'ctrl-option-' : 'alt-';
 242 } else if ( !is_safari_win && is_safari && webkit_version > 526 ) {
 243         tooltipAccessKeyPrefix = 'ctrl-alt-';
 244 } else if ( !is_safari_win && ( is_safari
 245                 || clientPC.indexOf('mac') != -1
 246                 || clientPC.indexOf('konqueror') != -1 ) ) {
 247         tooltipAccessKeyPrefix = 'ctrl-';
 248 } else if ( is_ff2 ) {
 249         tooltipAccessKeyPrefix = 'alt-shift-';
 250 }
 251 var tooltipAccessKeyRegexp = /\[(ctrl-)?(alt-)?(shift-)?(esc-)?(.)\]$/;
 252
 253 /**
 254  * Add the appropriate prefix to the accesskey shown in the tooltip.
 255  * If the nodeList parameter is given, only those nodes are updated;
 256  * otherwise, all the nodes that will probably have accesskeys by
 257  * default are updated.
 258  *
 259  * @param Array nodeList -- list of elements to update
 260  */
 261 function updateTooltipAccessKeys( nodeList ) {
 262         if ( !nodeList ) {
 263                 // Rather than scan all links on the whole page, we can just scan these
 264                 // containers which contain the relevant links. This is really just an
 265                 // optimization technique.
 266                 var linkContainers = [
 267                         'column-one', // Monobook and Modern
 268                         'mw-head', 'mw-panel', 'p-logo' // Vector
 269                 ];
 270                 for ( var i in linkContainers ) {
 271                         var linkContainer = document.getElementById( linkContainers[i] );
 272                         if ( linkContainer ) {
 273                                 updateTooltipAccessKeys( linkContainer.getElementsByTagName( 'a' ) );
 274                         }
 275                 }
 276                 // these are rare enough that no such optimization is needed
 277                 updateTooltipAccessKeys( document.getElementsByTagName( 'input' ) );
 278                 updateTooltipAccessKeys( document.getElementsByTagName( 'label' ) );
 279                 return;
 280         }
 281
 282         for ( var i = 0; i < nodeList.length; i++ ) {
 283                 var element = nodeList[i];
 284                 var tip = element.getAttribute( 'title' );
 285                 if ( tip && tooltipAccessKeyRegexp.exec( tip ) ) {
 286                         tip = tip.replace(tooltipAccessKeyRegexp,
 287                                           '[' + tooltipAccessKeyPrefix + "$5]");
 288                         element.setAttribute( 'title', tip );
 289                 }
 290         }
 291 }
 292
 293 /**
 294  * Add a link to one of the portlet menus on the page, including:
 295  *
 296  * p-cactions: Content actions (shown as tabs above the main content in Monobook)
 297  * p-personal: Personal tools (shown at the top right of the page in Monobook)
 298  * p-navigation: Navigation
 299  * p-tb: Toolbox
 300  *
 301  * This function exists for the convenience of custom JS authors.  All
 302  * but the first three parameters are optional, though providing at
 303  * least an id and a tooltip is recommended.
 304  *
 305  * By default the new link will be added to the end of the list.  To
 306  * add the link before a given existing item, pass the DOM node of
 307  * that item (easily obtained with document.getElementById()) as the
 308  * nextnode parameter; to add the link _after_ an existing item, pass
 309  * the node's nextSibling instead.
 310  *
 311  * @param String portlet -- id of the target portlet ("p-cactions", "p-personal", "p-navigation" or "p-tb")
 312  * @param String href -- link URL
 313  * @param String text -- link text (will be automatically lowercased by CSS for p-cactions in Monobook)
 314  * @param String id -- id of the new item, should be unique and preferably have the appropriate prefix ("ca-", "pt-", "n-" or "t-")
 315  * @param String tooltip -- text to show when hovering over the link, without accesskey suffix
 316  * @param String accesskey -- accesskey to activate this link (one character, try to avoid conflicts)
 317  * @param Node nextnode -- the DOM node before which the new item should be added, should be another item in the same list
 318  *
 319  * @return Node -- the DOM node of the new item (an LI element) or null
 320  */
 321 function addPortletLink( portlet, href, text, id, tooltip, accesskey, nextnode ) {
 322         var root = document.getElementById( portlet );
 323         if ( !root ) {
 324                 return null;
 325         }
 326         var uls = root.getElementsByTagName( 'ul' );
 327         var node;
 328         if ( uls.length > 0 ) {
 329                 node = uls[0];
 330         } else {
 331                 node = document.createElement( 'ul' );
 332                 var lastElementChild = null;
 333                 for ( var i = 0; i < root.childNodes.length; ++i ) { /* get root.lastElementChild */
 334                         if ( root.childNodes[i].nodeType == 1 ) {
 335                                 lastElementChild = root.childNodes[i];
 336                         }
 337                 }
 338                 if ( lastElementChild && lastElementChild.nodeName.match( /div/i ) ) {
 339                         /* Insert into the menu divs */
 340                         lastElementChild.appendChild( node );
 341                 } else {
 342                         root.appendChild( node );
 343                 }
 344         }
 345         if ( !node ) {
 346                 return null;
 347         }
 348
 349         // unhide portlet if it was hidden before
 350         root.className = root.className.replace( /(^| )emptyPortlet( |$)/, "$2" );
 351
 352         var span = document.createElement( 'span' );
 353         span.appendChild( document.createTextNode( text ) );
 354
 355         var link = document.createElement( 'a' );
 356         link.appendChild( span );
 357         link.href = href;
 358
 359         var item = document.createElement( 'li' );
 360         item.appendChild( link );
 361         if ( id ) {
 362                 item.id = id;
 363         }
 364
 365         if ( accesskey ) {
 366                 link.setAttribute( 'accesskey', accesskey );
 367                 tooltip += ' [' + accesskey + ']';
 368         }
 369         if ( tooltip ) {
 370                 link.setAttribute( 'title', tooltip );
 371         }
 372         if ( accesskey && tooltip ) {
 373                 updateTooltipAccessKeys( new Array( link ) );
 374         }
 375
 376         if ( nextnode && nextnode.parentNode == node ) {
 377                 node.insertBefore( item, nextnode );
 378         } else {
 379                 node.appendChild( item );  // IE compatibility (?)
 380         }
 381
 382         return item;
 383 }
 384
 385 function getInnerText( el ) {
 386         if ( typeof el == 'string' ) {
 387                 return el;
 388         }
 389         if ( typeof el == 'undefined' ) {
 390                 return el;
 391         }
 392         if ( el.textContent ) {
 393                 return el.textContent; // not needed but it is faster
 394         }
 395         if ( el.innerText ) {
 396                 return el.innerText; // IE doesn't have textContent
 397         }
 398         var str = '';
 399
 400         var cs = el.childNodes;
 401         var l = cs.length;
 402         for ( var i = 0; i < l; i++ ) {
 403                 switch ( cs[i].nodeType ) {
 404                         case 1: // ELEMENT_NODE
 405                                 str += ts_getInnerText( cs[i] );
 406                                 break;
 407                         case 3: // TEXT_NODE
 408                                 str += cs[i].nodeValue;
 409                                 break;
 410                 }
 411         }
 412         return str;
 413 }
 414
 415 /* Dummy for deprecated function */
 416 window.ta = [];
 417 function akeytt( doId ) {
 418 }
 419
 420 var checkboxes;
 421 var lastCheckbox;
 422
 423 function setupCheckboxShiftClick() {
 424         checkboxes = [];
 425         lastCheckbox = null;
 426         var inputs = document.getElementsByTagName( 'input' );
 427         addCheckboxClickHandlers( inputs );
 428 }
 429
 430 function addCheckboxClickHandlers( inputs, start ) {
 431         if ( !start ) {
 432                 start = 0;
 433         }
 434
 435         var finish = start + 250;
 436         if ( finish > inputs.length ) {
 437                 finish = inputs.length;
 438         }
 439
 440         for ( var i = start; i < finish; i++ ) {
 441                 var cb = inputs[i];
 442                 if ( !cb.type || cb.type.toLowerCase() != 'checkbox' ) {
 443                         continue;
 444                 }
 445                 var end = checkboxes.length;
 446                 checkboxes[end] = cb;
 447                 cb.index = end;
 448                 addClickHandler( cb, checkboxClickHandler );
 449         }
 450
 451         if ( finish < inputs.length ) {
 452                 setTimeout( function() {
 453                         addCheckboxClickHandlers( inputs, finish );
 454                 }, 200 );
 455         }
 456 }
 457
 458 function checkboxClickHandler( e ) {
 459         if ( typeof e == 'undefined' ) {
 460                 e = window.event;
 461         }
 462         if ( !e.shiftKey || lastCheckbox === null ) {
 463                 lastCheckbox = this.index;
 464                 return true;
 465         }
 466         var endState = this.checked;
 467         var start, finish;
 468         if ( this.index < lastCheckbox ) {
 469                 start = this.index + 1;
 470                 finish = lastCheckbox;
 471         } else {
 472                 start = lastCheckbox;
 473                 finish = this.index - 1;
 474         }
 475         for ( var i = start; i <= finish; ++i ) {
 476                 checkboxes[i].checked = endState;
 477                 if( i > start && typeof checkboxes[i].onchange == 'function' ) {
 478                         checkboxes[i].onchange(); // fire triggers
 479                 }
 480         }
 481         lastCheckbox = this.index;
 482         return true;
 483 }
 484
 485
 486 /*
 487         Written by Jonathan Snook, http://www.snook.ca/jonathan
 488         Add-ons by Robert Nyman, http://www.robertnyman.com
 489         Author says "The credit comment is all it takes, no license. Go crazy with it!:-)"
 490         From http://www.robertnyman.com/2005/11/07/the-ultimate-getelementsbyclassname/
 491 */
 492 function getElementsByClassName( oElm, strTagName, oClassNames ) {
 493         var arrReturnElements = new Array();
 494         if ( typeof( oElm.getElementsByClassName ) == 'function' ) {
 495                 /* Use a native implementation where possible FF3, Saf3.2, Opera 9.5 */
 496                 var arrNativeReturn = oElm.getElementsByClassName( oClassNames );
 497                 if ( strTagName == '*' ) {
 498                         return arrNativeReturn;
 499                 }
 500                 for ( var h = 0; h < arrNativeReturn.length; h++ ) {
 501                         if( arrNativeReturn[h].tagName.toLowerCase() == strTagName.toLowerCase() ) {
 502                                 arrReturnElements[arrReturnElements.length] = arrNativeReturn[h];
 503                         }
 504                 }
 505                 return arrReturnElements;
 506         }
 507         var arrElements = ( strTagName == '*' && oElm.all ) ? oElm.all : oElm.getElementsByTagName( strTagName );
 508         var arrRegExpClassNames = new Array();
 509         if( typeof oClassNames == 'object' ) {
 510                 for( var i = 0; i < oClassNames.length; i++ ) {
 511                         arrRegExpClassNames[arrRegExpClassNames.length] =
 512                                 new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + "(\\s|$)");
 513                 }
 514         } else {
 515                 arrRegExpClassNames[arrRegExpClassNames.length] =
 516                         new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)");
 517         }
 518         var oElement;
 519         var bMatchesAll;
 520         for( var j = 0; j < arrElements.length; j++ ) {
 521                 oElement = arrElements[j];
 522                 bMatchesAll = true;
 523                 for( var k = 0; k < arrRegExpClassNames.length; k++ ) {
 524                         if( !arrRegExpClassNames[k].test( oElement.className ) ) {
 525                                 bMatchesAll = false;
 526                                 break;
 527                         }
 528                 }
 529                 if( bMatchesAll ) {
 530                         arrReturnElements[arrReturnElements.length] = oElement;
 531                 }
 532         }
 533         return ( arrReturnElements );
 534 }
 535
 536 function redirectToFragment( fragment ) {
 537         var match = navigator.userAgent.match(/AppleWebKit\/(\d+)/);
 538         if ( match ) {
 539                 var webKitVersion = parseInt( match[1] );
 540                 if ( webKitVersion < 420 ) {
 541                         // Released Safari w/ WebKit 418.9.1 messes up horribly
 542                         // Nightlies of 420+ are ok
 543                         return;
 544                 }
 545         }
 546         if ( window.location.hash == '' ) {
 547                 window.location.hash = fragment;
 548
 549                 // Mozilla needs to wait until after load, otherwise the window doesn't
 550                 // scroll.  See <https://bugzilla.mozilla.org/show_bug.cgi?id=516293>.
 551                 // There's no obvious way to detect this programmatically, so we use
 552                 // version-testing.  If Firefox fixes the bug, they'll jump twice, but
 553                 // better twice than not at all, so make the fix hit future versions as
 554                 // well.
 555                 if ( is_gecko ) {
 556                         addOnloadHook(function() {
 557                                 if ( window.location.hash == fragment ) {
 558                                         window.location.hash = fragment;
 559                                 }
 560                         });
 561                 }
 562         }
 563 }
 564
 565 /*
 566  * Table sorting script based on one (c) 1997-2006 Stuart Langridge and Joost
 567  * de Valk:
 568  * http://www.joostdevalk.nl/code/sortable-table/
 569  * http://www.kryogenix.org/code/browser/sorttable/
 570  *
 571  * @todo don't break on colspans/rowspans (bug 8028)
 572  * @todo language-specific digit grouping/decimals (bug 8063)
 573  * @todo support all accepted date formats (bug 8226)
 574  */
 575
 576 var ts_image_path = stylepath + '/common/images/';
 577 var ts_image_up = 'sort_up.gif';
 578 var ts_image_down = 'sort_down.gif';
 579 var ts_image_none = 'sort_none.gif';
 580 var ts_europeandate = wgContentLanguage != 'en'; // The non-American-inclined can change to "true"
 581 var ts_alternate_row_colors = false;
 582 var ts_number_transform_table = null;
 583 var ts_number_regex = null;
 584
 585 function sortables_init() {
 586         var idnum = 0;
 587         // Find all tables with class sortable and make them sortable
 588         var tables = getElementsByClassName( document, 'table', 'sortable' );
 589         for ( var ti = 0; ti < tables.length ; ti++ ) {
 590                 if ( !tables[ti].id ) {
 591                         tables[ti].setAttribute( 'id', 'sortable_table_id_' + idnum );
 592                         ++idnum;
 593                 }
 594                 ts_makeSortable( tables[ti] );
 595         }
 596 }
 597
 598 function ts_makeSortable( table ) {
 599         var firstRow;
 600         if ( table.rows && table.rows.length > 0 ) {
 601                 if ( table.tHead && table.tHead.rows.length > 0 ) {
 602                         firstRow = table.tHead.rows[table.tHead.rows.length-1];
 603                 } else {
 604                         firstRow = table.rows[0];
 605                 }
 606         }
 607         if ( !firstRow ) {
 608                 return;
 609         }
 610
 611         // We have a first row: assume it's the header, and make its contents clickable links
 612         for ( var i = 0; i < firstRow.cells.length; i++ ) {
 613                 var cell = firstRow.cells[i];
 614                 if ( (' ' + cell.className + ' ').indexOf(' unsortable ') == -1 ) {
 615                         cell.innerHTML += '<a href="#" class="sortheader" '
 616                                 + 'onclick="ts_resortTable(this);return false;">'
 617                                 + '<span class="sortarrow">'
 618                                 + '<img src="'
 619                                 + ts_image_path
 620                                 + ts_image_none
 621                                 + '" alt="&darr;"/></span></a>';
 622                 }
 623         }
 624         if ( ts_alternate_row_colors ) {
 625                 ts_alternate( table );
 626         }
 627 }
 628
 629 function ts_getInnerText( el ) {
 630         return getInnerText( el );
 631 }
 632
 633 function ts_resortTable( lnk ) {
 634         // get the span
 635         var span = lnk.getElementsByTagName('span')[0];
 636
 637         var td = lnk.parentNode;
 638         var tr = td.parentNode;
 639         var column = td.cellIndex;
 640
 641         var table = tr.parentNode;
 642         while ( table && !( table.tagName && table.tagName.toLowerCase() == 'table' ) ) {
 643                 table = table.parentNode;
 644         }
 645         if ( !table ) {
 646                 return;
 647         }
 648
 649         if ( table.rows.length <= 1 ) {
 650                 return;
 651         }
 652
 653         // Generate the number transform table if it's not done already
 654         if ( ts_number_transform_table === null ) {
 655                 ts_initTransformTable();
 656         }
 657
 658         // Work out a type for the column
 659         // Skip the first row if that's where the headings are
 660         var rowStart = ( table.tHead && table.tHead.rows.length > 0 ? 0 : 1 );
 661         var bodyRows = 0;
 662         if (rowStart == 0 && table.tBodies) {
 663                 for (var i=0; i < table.tBodies.length; i++ ) {
 664                         bodyRows += table.tBodies[i].rows.length;
 665                 }
 666                 if (bodyRows < table.rows.length)
 667                         rowStart = 1;
 668         }
 669
 670         var itm = '';
 671         for ( var i = rowStart; i < table.rows.length; i++ ) {
 672                 if ( table.rows[i].cells.length > column ) {
 673                         itm = ts_getInnerText(table.rows[i].cells[column]);
 674                         itm = itm.replace(/^[\s\xa0]+/, '').replace(/[\s\xa0]+$/, '');
 675                         if ( itm != '' ) {
 676                                 break;
 677                         }
 678                 }
 679         }
 680
 681         // TODO: bug 8226, localised date formats
 682         var sortfn = ts_sort_generic;
 683         var preprocessor = ts_toLowerCase;
 684         if ( /^\d\d[\/. -][a-zA-Z]{3}[\/. -]\d\d\d\d$/.test( itm ) ) {
 685                 preprocessor = ts_dateToSortKey;
 686         } else if ( /^\d\d[\/.-]\d\d[\/.-]\d\d\d\d$/.test( itm ) ) {
 687                 preprocessor = ts_dateToSortKey;
 688         } else if ( /^\d\d[\/.-]\d\d[\/.-]\d\d$/.test( itm ) ) {
 689                 preprocessor = ts_dateToSortKey;
 690                 // (minus sign)([pound dollar euro yen currency]|cents)
 691         } else if ( /(^([-\u2212] *)?[\u00a3$\u20ac\u00a4\u00a5]|\u00a2$)/.test( itm ) ) {
 692                 preprocessor = ts_currencyToSortKey;
 693         } else if ( ts_number_regex.test( itm ) ) {
 694                 preprocessor = ts_parseFloat;
 695         }
 696
 697         var reverse = ( span.getAttribute( 'sortdir' ) == 'down' );
 698
 699         var newRows = new Array();
 700         var staticRows = new Array();
 701         for ( var j = rowStart; j < table.rows.length; j++ ) {
 702                 var row = table.rows[j];
 703                 if( (' ' + row.className + ' ').indexOf(' unsortable ') < 0 ) {
 704                         var keyText = ts_getInnerText( row.cells[column] );
 705                         if( keyText === undefined ) {
 706                                 keyText = '';
 707                         }
 708                         var oldIndex = ( reverse ? -j : j );
 709                         var preprocessed = preprocessor( keyText.replace(/^[\s\xa0]+/, '').replace(/[\s\xa0]+$/, '') );
 710
 711                         newRows[newRows.length] = new Array( row, preprocessed, oldIndex );
 712                 } else {
 713                         staticRows[staticRows.length] = new Array( row, false, j-rowStart );
 714                 }
 715         }
 716
 717         newRows.sort( sortfn );
 718
 719         var arrowHTML;
 720         if ( reverse ) {
 721                 arrowHTML = '<img src="' + ts_image_path + ts_image_down + '" alt="&darr;"/>';
 722                 newRows.reverse();
 723                 span.setAttribute( 'sortdir', 'up' );
 724         } else {
 725                 arrowHTML = '<img src="' + ts_image_path + ts_image_up + '" alt="&uarr;"/>';
 726                 span.setAttribute( 'sortdir', 'down' );
 727         }
 728
 729         for ( var i = 0; i < staticRows.length; i++ ) {
 730                 var row = staticRows[i];
 731                 newRows.splice( row[2], 0, row );
 732         }
 733
 734         // We appendChild rows that already exist to the tbody, so it moves them rather than creating new ones
 735         // don't do sortbottom rows
 736         for ( var i = 0; i < newRows.length; i++ ) {
 737                 if ( ( ' ' + newRows[i][0].className + ' ').indexOf(' sortbottom ') == -1 ) {
 738                         table.tBodies[0].appendChild( newRows[i][0] );
 739                 }
 740         }
 741         // do sortbottom rows only
 742         for ( var i = 0; i < newRows.length; i++ ) {
 743                 if ( ( ' ' + newRows[i][0].className + ' ').indexOf(' sortbottom ') != -1 ) {
 744                         table.tBodies[0].appendChild( newRows[i][0] );
 745                 }
 746         }
 747
 748         // Delete any other arrows there may be showing
 749         var spans = getElementsByClassName( tr, 'span', 'sortarrow' );
 750         for ( var i = 0; i < spans.length; i++ ) {
 751                 spans[i].innerHTML = '<img src="' + ts_image_path + ts_image_none + '" alt="&darr;"/>';
 752         }
 753         span.innerHTML = arrowHTML;
 754
 755         if ( ts_alternate_row_colors ) {
 756                 ts_alternate( table );
 757         }
 758 }
 759
 760 function ts_initTransformTable() {
 761         if ( typeof wgSeparatorTransformTable == 'undefined'
 762                         || ( wgSeparatorTransformTable[0] == '' && wgDigitTransformTable[2] == '' ) )
 763         {
 764                 var digitClass = "[0-9,.]";
 765                 ts_number_transform_table = false;
 766         } else {
 767                 ts_number_transform_table = {};
 768                 // Unpack the transform table
 769                 // Separators
 770                 var ascii = wgSeparatorTransformTable[0].split("\t");
 771                 var localised = wgSeparatorTransformTable[1].split("\t");
 772                 for ( var i = 0; i < ascii.length; i++ ) {
 773                         ts_number_transform_table[localised[i]] = ascii[i];
 774                 }
 775                 // Digits
 776                 ascii = wgDigitTransformTable[0].split("\t");
 777                 localised = wgDigitTransformTable[1].split("\t");
 778                 for ( var i = 0; i < ascii.length; i++ ) {
 779                         ts_number_transform_table[localised[i]] = ascii[i];
 780                 }
 781
 782                 // Construct regex for number identification
 783                 var digits = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ',', '\\.'];
 784                 var maxDigitLength = 1;
 785                 for ( var digit in ts_number_transform_table ) {
 786                         // Escape regex metacharacters
 787                         digits.push(
 788                                 digit.replace( /[\\\\$\*\+\?\.\(\)\|\{\}\[\]\-]/,
 789                                         function( s ) { return '\\' + s; } )
 790                         );
 791                         if ( digit.length > maxDigitLength ) {
 792                                 maxDigitLength = digit.length;
 793                         }
 794                 }
 795                 if ( maxDigitLength > 1 ) {
 796                         var digitClass = '[' + digits.join( '', digits ) + ']';
 797                 } else {
 798                         var digitClass = '(' + digits.join( '|', digits ) + ')';
 799                 }
 800         }
 801
 802         // We allow a trailing percent sign, which we just strip.  This works fine
 803         // if percents and regular numbers aren't being mixed.
 804         ts_number_regex = new RegExp(
 805                 "^(" +
 806                         "[-+\u2212]?[0-9][0-9,]*(\\.[0-9,]*)?(E[-+\u2212]?[0-9][0-9,]*)?" + // Fortran-style scientific
 807                         "|" +
 808                         "[-+\u2212]?" + digitClass + "+%?" + // Generic localised
 809                 ")$", "i"
 810         );
 811 }
 812
 813 function ts_toLowerCase( s ) {
 814         return s.toLowerCase();
 815 }
 816
 817 function ts_dateToSortKey( date ) {
 818         // y2k notes: two digit years less than 50 are treated as 20XX, greater than 50 are treated as 19XX
 819         if ( date.length == 11 ) {
 820                 switch ( date.substr( 3, 3 ).toLowerCase() ) {
 821                         case 'jan':
 822                                 var month = '01';
 823                                 break;
 824                         case 'feb':
 825                                 var month = '02';
 826                                 break;
 827                         case 'mar':
 828                                 var month = '03';
 829                                 break;
 830                         case 'apr':
 831                                 var month = '04';
 832                                 break;
 833                         case 'may':
 834                                 var month = '05';
 835                                 break;
 836                         case 'jun':
 837                                 var month = '06';
 838                                 break;
 839                         case 'jul':
 840                                 var month = '07';
 841                                 break;
 842                         case 'aug':
 843                                 var month = '08';
 844                                 break;
 845                         case 'sep':
 846                                 var month = '09';
 847                                 break;
 848                         case 'oct':
 849                                 var month = '10';
 850                                 break;
 851                         case 'nov':
 852                                 var month = '11';
 853                                 break;
 854                         case 'dec':
 855                                 var month = '12';
 856                                 break;
 857                         // default: var month = '00';
 858                 }
 859                 return date.substr( 7, 4 ) + month + date.substr( 0, 2 );
 860         } else if ( date.length == 10 ) {
 861                 if ( ts_europeandate == false ) {
 862                         return date.substr( 6, 4 ) + date.substr( 0, 2 ) + date.substr( 3, 2 );
 863                 } else {
 864                         return date.substr( 6, 4 ) + date.substr( 3, 2 ) + date.substr( 0, 2 );
 865                 }
 866         } else if ( date.length == 8 ) {
 867                 var yr = date.substr( 6, 2 );
 868                 if ( parseInt( yr ) < 50 ) {
 869                         yr = '20' + yr;
 870                 } else {
 871                         yr = '19' + yr;
 872                 }
 873                 if ( ts_europeandate == true ) {
 874                         return yr + date.substr( 3, 2 ) + date.substr( 0, 2 );
 875                 } else {
 876                         return yr + date.substr( 0, 2 ) + date.substr( 3, 2 );
 877                 }
 878         }
 879         return '00000000';
 880 }
 881
 882 function ts_parseFloat( s ) {
 883         if ( !s ) {
 884                 return 0;
 885         }
 886         if ( ts_number_transform_table != false ) {
 887                 var newNum = '', c;
 888
 889                 for ( var p = 0; p < s.length; p++ ) {
 890                         c = s.charAt( p );
 891                         if ( c in ts_number_transform_table ) {
 892                                 newNum += ts_number_transform_table[c];
 893                         } else {
 894                                 newNum += c;
 895                         }
 896                 }
 897                 s = newNum;
 898         }
 899         var num = parseFloat( s.replace(/[, ]/g, '').replace("\u2212", '-') );
 900         return ( isNaN( num ) ? -Infinity : num );
 901 }
 902
 903 function ts_currencyToSortKey( s ) {
 904         return ts_parseFloat(s.replace(/[^-\u22120-9.,]/g,''));
 905 }
 906
 907 function ts_sort_generic( a, b ) {
 908         return a[1] < b[1] ? -1 : a[1] > b[1] ? 1 : a[2] - b[2];
 909 }
 910
 911 function ts_alternate( table ) {
 912         // Take object table and get all it's tbodies.
 913         var tableBodies = table.getElementsByTagName( 'tbody' );
 914         // Loop through these tbodies
 915         for ( var i = 0; i < tableBodies.length; i++ ) {
 916                 // Take the tbody, and get all it's rows
 917                 var tableRows = tableBodies[i].getElementsByTagName( 'tr' );
 918                 // Loop through these rows
 919                 // Start at 1 because we want to leave the heading row untouched
 920                 for ( var j = 0; j < tableRows.length; j++ ) {
 921                         // Check if j is even, and apply classes for both possible results
 922                         var oldClasses = tableRows[j].className.split(' ');
 923                         var newClassName = '';
 924                         for ( var k = 0; k < oldClasses.length; k++ ) {
 925                                 if ( oldClasses[k] != '' && oldClasses[k] != 'even' && oldClasses[k] != 'odd' ) {
 926                                         newClassName += oldClasses[k] + ' ';
 927                                 }
 928                         }
 929                         tableRows[j].className = newClassName + ( j % 2 == 0 ? 'even' : 'odd' );
 930                 }
 931         }
 932 }
 933
 934 /*
 935  * End of table sorting code
 936  */
 937
 938
 939 /**
 940  * Add a cute little box at the top of the screen to inform the user of
 941  * something, replacing any preexisting message.
 942  *
 943  * @param String -or- Dom Object message HTML to be put inside the right div
 944  * @param String className   Used in adding a class; should be different for each
 945  *   call to allow CSS/JS to hide different boxes.  null = no class used.
 946  * @return Boolean       True on success, false on failure
 947  */
 948 function jsMsg( message, className ) {
 949         if ( !document.getElementById ) {
 950                 return false;
 951         }
 952         // We special-case skin structures provided by the software.  Skins that
 953         // choose to abandon or significantly modify our formatting can just define
 954         // an mw-js-message div to start with.
 955         var messageDiv = document.getElementById( 'mw-js-message' );
 956         if ( !messageDiv ) {
 957                 messageDiv = document.createElement( 'div' );
 958                 if ( document.getElementById( 'column-content' )
 959                 && document.getElementById( 'content' ) ) {
 960                         // MonoBook, presumably
 961                         document.getElementById( 'content' ).insertBefore(
 962                                 messageDiv,
 963                                 document.getElementById( 'content' ).firstChild
 964                         );
 965                 } else if ( document.getElementById( 'content' )
 966                 && document.getElementById( 'article' ) ) {
 967                         // Non-Monobook but still recognizable (old-style)
 968                         document.getElementById( 'article').insertBefore(
 969                                 messageDiv,
 970                                 document.getElementById( 'article' ).firstChild
 971                         );
 972                 } else {
 973                         return false;
 974                 }
 975         }
 976
 977         messageDiv.setAttribute( 'id', 'mw-js-message' );
 978         messageDiv.style.display = 'block';
 979         if( className ) {
 980                 messageDiv.setAttribute( 'class', 'mw-js-message-' + className );
 981         }
 982
 983         if ( typeof message === 'object' ) {
 984                 while ( messageDiv.hasChildNodes() ) { // Remove old content
 985                         messageDiv.removeChild( messageDiv.firstChild );
 986                 }
 987                 messageDiv.appendChild( message ); // Append new content
 988         } else {
 989                 messageDiv.innerHTML = message;
 990         }
 991         return true;
 992 }
 993
 994 /**
 995  * Inject a cute little progress spinner after the specified element
 996  *
 997  * @param element Element to inject after
 998  * @param id Identifier string (for use with removeSpinner(), below)
 999  */
1000 function injectSpinner( element, id ) {
1001         var spinner = document.createElement( 'img' );
1002         spinner.id = 'mw-spinner-' + id;
1003         spinner.src = stylepath + '/common/images/spinner.gif';
1004         spinner.alt = spinner.title = '...';
1005         if( element.nextSibling ) {
1006                 element.parentNode.insertBefore( spinner, element.nextSibling );
1007         } else {
1008                 element.parentNode.appendChild( spinner );
1009         }
1010 }
1011
1012 /**
1013  * Remove a progress spinner added with injectSpinner()
1014  *
1015  * @param id Identifier string
1016  */
1017 function removeSpinner( id ) {
1018         var spinner = document.getElementById( 'mw-spinner-' + id );
1019         if( spinner ) {
1020                 spinner.parentNode.removeChild( spinner );
1021         }
1022 }
1023
1024 function runOnloadHook() {
1025         // don't run anything below this for non-dom browsers
1026         if ( doneOnloadHook || !( document.getElementById && document.getElementsByTagName ) ) {
1027                 return;
1028         }
1029
1030         // set this before running any hooks, since any errors below
1031         // might cause the function to terminate prematurely
1032         doneOnloadHook = true;
1033
1034         updateTooltipAccessKeys( null );
1035         setupCheckboxShiftClick();
1036         sortables_init();
1037
1038         // Run any added-on functions
1039         for ( var i = 0; i < onloadFuncts.length; i++ ) {
1040                 onloadFuncts[i]();
1041         }
1042 }
1043
1044 /**
1045  * Add an event handler to an element
1046  *
1047  * @param Element element Element to add handler to
1048  * @param String attach Event to attach to
1049  * @param callable handler Event handler callback
1050  */
1051 function addHandler( element, attach, handler ) {
1052         if( window.addEventListener ) {
1053                 element.addEventListener( attach, handler, false );
1054         } else if( window.attachEvent ) {
1055                 element.attachEvent( 'on' + attach, handler );
1056         }
1057 }
1058
1059 /**
1060  * Add a click event handler to an element
1061  *
1062  * @param Element element Element to add handler to
1063  * @param callable handler Event handler callback
1064  */
1065 function addClickHandler( element, handler ) {
1066         addHandler( element, 'click', handler );
1067 }
1068
1069 /**
1070  * Removes an event handler from an element
1071  *
1072  * @param Element element Element to remove handler from
1073  * @param String remove Event to remove
1074  * @param callable handler Event handler callback to remove
1075  */
1076 function removeHandler( element, remove, handler ) {
1077         if( window.removeEventListener ) {
1078                 element.removeEventListener( remove, handler, false );
1079         } else if( window.detachEvent ) {
1080                 element.detachEvent( 'on' + remove, handler );
1081         }
1082 }
1083 // note: all skins should call runOnloadHook() at the end of html output,
1084 //      so the below should be redundant. It's there just in case.
1085 hookEvent( 'load', runOnloadHook );
1086
1087 if ( ie6_bugs ) {
1088         importScriptURI( stylepath + '/common/IEFixes.js' );
1089 }
1090
1091 // For future use.
1092 mw = {};
1093
1094