Rewrote Special:Upload to allow easier extension. Mostly backwards compatible towards...

[lhc/web/wiklou.git] / skins / common / wikibits.js

// MediaWiki JavaScript support functions

var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var is_gecko = /gecko/.test( clientPC ) &&
        !/khtml|spoofer|netscape\/7\.0/.test(clientPC);
var webkit_match = clientPC.match(/applewebkit\/(\d+)/);
if (webkit_match) {
        var is_safari = clientPC.indexOf('applewebkit') != -1 &&
                clientPC.indexOf('spoofer') == -1;
        var is_safari_win = is_safari && clientPC.indexOf('windows') != -1;
        var webkit_version = parseInt(webkit_match[1]);
}
// For accesskeys; note that FF3+ is included here!
var is_ff2 = /firefox\/[2-9]|minefield\/3/.test( clientPC );
var ff2_bugs = /firefox\/2/.test( clientPC );
// These aren't used here, but some custom scripts rely on them
var is_ff2_win = is_ff2 && clientPC.indexOf('windows') != -1;
var is_ff2_x11 = is_ff2 && clientPC.indexOf('x11') != -1;
if (clientPC.indexOf('opera') != -1) {
        var is_opera = true;
        var is_opera_preseven = window.opera && !document.childNodes;
        var is_opera_seven = window.opera && document.childNodes;
        var is_opera_95 = /opera\/(9\.[5-9]|[1-9][0-9])/.test( clientPC );
        var opera6_bugs = is_opera_preseven;
        var opera7_bugs = is_opera_seven && !is_opera_95;
        var opera95_bugs = /opera\/(9\.5)/.test( clientPC );
}

// Global external objects used by this script.
/*extern ta, stylepath, skin */

// add any onload functions in this hook (please don't hard-code any events in the xhtml source)
var doneOnloadHook;

if (!window.onloadFuncts) {
        var onloadFuncts = [];
}

// code that is dependent on js2 functions should use js2AddOnloadHook
function addOnloadHook(hookFunct) {
        // Allows add-on scripts to add onload functions
        if(!doneOnloadHook) {
                onloadFuncts[onloadFuncts.length] = hookFunct;
        } else {
                hookFunct();  // bug in MSIE script loading
        }
}


function hookEvent(hookName, hookFunct) {
        addHandler(window, hookName, hookFunct);
}

function importScript(page) {
        // TODO: might want to introduce a utility function to match wfUrlencode() in PHP
        var uri = wgScript + '?title=' +
                encodeURIComponent(page.replace(/ /g,'_')).replace(/%2F/ig,'/').replace(/%3A/ig,':') +
                '&action=raw&ctype=text/javascript';
        return importScriptURI(uri);
}

var loadedScripts = {}; // included-scripts tracker
function importScriptURI(url) {
        if (loadedScripts[url]) {
                return null;
        }
        loadedScripts[url] = true;
        var s = document.createElement('script');
        s.setAttribute('src',url);
        s.setAttribute('type','text/javascript');
        document.getElementsByTagName('head')[0].appendChild(s);
        return s;
}

function importStylesheet(page) {
        return importStylesheetURI(wgScript + '?action=raw&ctype=text/css&title=' + encodeURIComponent(page.replace(/ /g,'_')));
}

function importStylesheetURI(url,media) {
        var l = document.createElement('link');
        l.type = 'text/css';
        l.rel = 'stylesheet';
        l.href = url;
        if(media) l.media = media
        document.getElementsByTagName('head')[0].appendChild(l);
        return l;
}

function appendCSS(text) {
        var s = document.createElement('style');
        s.type = 'text/css';
        s.rel = 'stylesheet';
        if (s.styleSheet) s.styleSheet.cssText = text //IE
        else s.appendChild(document.createTextNode(text + '')) //Safari sometimes borks on null
        document.getElementsByTagName('head')[0].appendChild(s);
        return s;
}

// special stylesheet links
if (typeof stylepath != 'undefined' && typeof skin != 'undefined') {
        // FIXME: This tries to load the stylesheets even for skins where they
        // don't exist, i.e., everything but Monobook.
        if (opera6_bugs) {
                importStylesheetURI(stylepath+'/'+skin+'/Opera6Fixes.css');
        } else if (opera7_bugs) {
                importStylesheetURI(stylepath+'/'+skin+'/Opera7Fixes.css');
        } else if (opera95_bugs) {
                importStylesheetURI(stylepath+'/'+skin+'/Opera9Fixes.css');
        } else if (ff2_bugs) {
                importStylesheetURI(stylepath+'/'+skin+'/FF2Fixes.css');
        }
}


if (wgBreakFrames) {
        // Un-trap us from framesets
        if (window.top != window) {
                window.top.location = window.location;
        }
}

function showTocToggle() {
        if (document.createTextNode) {
                // Uses DOM calls to avoid document.write + XHTML issues

                var linkHolder = document.getElementById('toctitle');
                var existingLink = document.getElementById('togglelink');
                if (!linkHolder || existingLink) {
                        // Don't add the toggle link twice
                        return;
                }

                var outerSpan = document.createElement('span');
                outerSpan.className = 'toctoggle';

                var toggleLink = document.createElement('a');
                toggleLink.id = 'togglelink';
                toggleLink.className = 'internal';
                toggleLink.href = 'javascript:toggleToc()';
                toggleLink.appendChild(document.createTextNode(tocHideText));

                outerSpan.appendChild(document.createTextNode('['));
                outerSpan.appendChild(toggleLink);
                outerSpan.appendChild(document.createTextNode(']'));

                linkHolder.appendChild(document.createTextNode(' '));
                linkHolder.appendChild(outerSpan);

                var cookiePos = document.cookie.indexOf("hidetoc=");
                if (cookiePos > -1 && document.cookie.charAt(cookiePos + 8) == 1) {
                        toggleToc();
                }
        }
}

function changeText(el, newText) {
        // Safari work around
        if (el.innerText) {
                el.innerText = newText;
        } else if (el.firstChild && el.firstChild.nodeValue) {
                el.firstChild.nodeValue = newText;
        }
}

function toggleToc() {
        var tocmain = document.getElementById('toc');
        var toc = document.getElementById('toc').getElementsByTagName('ul')[0];
        var toggleLink = document.getElementById('togglelink');

        if (toc && toggleLink && toc.style.display == 'none') {
                changeText(toggleLink, tocHideText);
                toc.style.display = 'block';
                document.cookie = "hidetoc=0";
                tocmain.className = 'toc';
        } else {
                changeText(toggleLink, tocShowText);
                toc.style.display = 'none';
                document.cookie = "hidetoc=1";
                tocmain.className = 'toc tochidden';
        }
}

var mwEditButtons = [];
var mwCustomEditButtons = []; // eg to add in MediaWiki:Common.js

function escapeQuotes(text) {
        var re = new RegExp("'","g");
        text = text.replace(re,"\\'");
        re = new RegExp("\\n","g");
        text = text.replace(re,"\\n");
        return escapeQuotesHTML(text);
}

function escapeQuotesHTML(text) {
        var re = new RegExp('&',"g");
        text = text.replace(re,"&");
        re = new RegExp('"',"g");
        text = text.replace(re,""");
        re = new RegExp('<',"g");
        text = text.replace(re,"&lt;");
        re = new RegExp('>',"g");
        text = text.replace(re,"&gt;");
        return text;
}


/**
 * Set the accesskey prefix based on browser detection.
 */
var tooltipAccessKeyPrefix = 'alt-';
if (is_opera) {
        tooltipAccessKeyPrefix = 'shift-esc-';
} else if (!is_safari_win && is_safari && webkit_version > 526) {
        tooltipAccessKeyPrefix = 'ctrl-alt-';
} else if (!is_safari_win && (is_safari
                || clientPC.indexOf('mac') != -1
                || clientPC.indexOf('konqueror') != -1 )) {
        tooltipAccessKeyPrefix = 'ctrl-';
} else if (is_ff2) {
        tooltipAccessKeyPrefix = 'alt-shift-';
}
var tooltipAccessKeyRegexp = /\[(ctrl-)?(alt-)?(shift-)?(esc-)?(.)\]$/;

/**
 * Add the appropriate prefix to the accesskey shown in the tooltip.
 * If the nodeList parameter is given, only those nodes are updated;
 * otherwise, all the nodes that will probably have accesskeys by
 * default are updated.
 *
 * @param Array nodeList -- list of elements to update
 */
function updateTooltipAccessKeys( nodeList ) {
        if ( !nodeList ) {
                // Rather than scan all links on the whole page, we can just scan these
                // containers which contain the relevant links. This is really just an
                // optimization technique.
                var linkContainers = [
                        "column-one", // Monobook and Modern
                        "head", "panel", "p-logo" // Vector
                ];
                for ( var i in linkContainers ) {
                        var linkContainer = document.getElementById( linkContainers[i] );
                        if ( linkContainer ) {
                                updateTooltipAccessKeys( linkContainer.getElementsByTagName("a") );
                        }
                }
                // these are rare enough that no such optimization is needed
                updateTooltipAccessKeys( document.getElementsByTagName("input") );
                updateTooltipAccessKeys( document.getElementsByTagName("label") );
                return;
        }

        for ( var i = 0; i < nodeList.length; i++ ) {
                var element = nodeList[i];
                var tip = element.getAttribute("title");
                if ( tip && tooltipAccessKeyRegexp.exec(tip) ) {
                        tip = tip.replace(tooltipAccessKeyRegexp,
                                          "["+tooltipAccessKeyPrefix+"$5]");
                        element.setAttribute("title", tip );
                }
        }
}

/**
 * Add a link to one of the portlet menus on the page, including:
 *
 * p-cactions: Content actions (shown as tabs above the main content in Monobook)
 * p-personal: Personal tools (shown at the top right of the page in Monobook)
 * p-navigation: Navigation
 * p-tb: Toolbox
 *
 * This function exists for the convenience of custom JS authors.  All
 * but the first three parameters are optional, though providing at
 * least an id and a tooltip is recommended.
 *
 * By default the new link will be added to the end of the list.  To
 * add the link before a given existing item, pass the DOM node of
 * that item (easily obtained with document.getElementById()) as the
 * nextnode parameter; to add the link _after_ an existing item, pass
 * the node's nextSibling instead.
 *
 * @param String portlet -- id of the target portlet ("p-cactions", "p-personal", "p-navigation" or "p-tb")
 * @param String href -- link URL
 * @param String text -- link text (will be automatically lowercased by CSS for p-cactions in Monobook)
 * @param String id -- id of the new item, should be unique and preferably have the appropriate prefix ("ca-", "pt-", "n-" or "t-")
 * @param String tooltip -- text to show when hovering over the link, without accesskey suffix
 * @param String accesskey -- accesskey to activate this link (one character, try to avoid conflicts)
 * @param Node nextnode -- the DOM node before which the new item should be added, should be another item in the same list
 *
 * @return Node -- the DOM node of the new item (an LI element) or null
 */
function addPortletLink(portlet, href, text, id, tooltip, accesskey, nextnode) {
        var root = document.getElementById(portlet);
        if ( !root ) return null;
        var node = root.getElementsByTagName( "ul" )[0];
        if ( !node ) return null;

        // unhide portlet if it was hidden before
        root.className = root.className.replace( /(^| )emptyPortlet( |$)/, "$2" );

        var span = document.createElement( "span" );
        span.appendChild( document.createTextNode( text ) );

        var link = document.createElement( "a" );
        link.appendChild( span );
        link.href = href;

        var item = document.createElement( "li" );
        item.appendChild( link );
        if ( id ) item.id = id;

        if ( accesskey ) {
                link.setAttribute( "accesskey", accesskey );
                tooltip += " ["+accesskey+"]";
        }
        if ( tooltip ) {
                link.setAttribute( "title", tooltip );
        }
        if ( accesskey && tooltip ) {
                updateTooltipAccessKeys( new Array( link ) );
        }

        if ( nextnode && nextnode.parentNode == node )
                node.insertBefore( item, nextnode );
        else
                node.appendChild( item );  // IE compatibility (?)

        return item;
}

function getInnerText(el) {
        if (typeof el == "string") return el;
        if (typeof el == "undefined") { return el };
        if (el.textContent) return el.textContent; // not needed but it is faster
        if (el.innerText) return el.innerText;     // IE doesn't have textContent
        var str = "";

        var cs = el.childNodes;
        var l = cs.length;
        for (var i = 0; i < l; i++) {
                switch (cs[i].nodeType) {
                        case 1: //ELEMENT_NODE
                                str += ts_getInnerText(cs[i]);
                                break;
                        case 3: //TEXT_NODE
                                str += cs[i].nodeValue;
                                break;
                }
        }
        return str;
}


/**
 * Set up accesskeys/tooltips from the deprecated ta array.  If doId
 * is specified, only set up for that id.  Note that this function is
 * deprecated and will not be supported indefinitely -- use
 * updateTooltipAccessKey() instead.
 *
 * @param mixed doId string or null
 */
function akeytt( doId ) {
        // A lot of user scripts (and some of the code below) break if
        // ta isn't defined, so we make sure it is.  Explictly using
        // window.ta avoids a "ta is not defined" error.
        if (!window.ta) window.ta = new Array;

        // Make a local, possibly restricted, copy to avoid clobbering
        // the original.
        var ta;
        if ( doId ) {
                ta = [doId];
        } else {
                ta = window.ta;
        }

        // Now deal with evil deprecated ta
        var watchCheckboxExists = document.getElementById( 'wpWatchthis' ) ? true : false;
        for (var id in ta) {
                var n = document.getElementById(id);
                if (n) {
                        var a = null;
                        var ak = '';
                        // Are we putting accesskey in it
                        if (ta[id][0].length > 0) {
                                // Is this object a object? If not assume it's the next child.

                                if (n.nodeName.toLowerCase() == "a") {
                                        a = n;
                                } else {
                                        a = n.childNodes[0];
                                }
                                // Don't add an accesskey for the watch tab if the watch
                                // checkbox is also available.
                                if (a && ((id != 'ca-watch' && id != 'ca-unwatch') || !watchCheckboxExists)) {
                                        a.accessKey = ta[id][0];
                                        ak = ' ['+tooltipAccessKeyPrefix+ta[id][0]+']';
                                }
                        } else {
                                // We don't care what type the object is when assigning tooltip
                                a = n;
                                ak = '';
                        }

                        if (a) {
                                a.title = ta[id][1]+ak;
                        }
                }
        }
}

var checkboxes;
var lastCheckbox;

function setupCheckboxShiftClick() {
        checkboxes = [];
        lastCheckbox = null;
        var inputs = document.getElementsByTagName('input');
        addCheckboxClickHandlers(inputs);
}

function addCheckboxClickHandlers(inputs, start) {
        if ( !start) start = 0;

        var finish = start + 250;
        if ( finish > inputs.length )
                finish = inputs.length;

        for ( var i = start; i < finish; i++ ) {
                var cb = inputs[i];
                if ( !cb.type || cb.type.toLowerCase() != 'checkbox' )
                        continue;
                var end = checkboxes.length;
                checkboxes[end] = cb;
                cb.index = end;
                cb.onclick = checkboxClickHandler;
        }

        if ( finish < inputs.length ) {
                setTimeout( function () {
                        addCheckboxClickHandlers(inputs, finish);
                }, 200 );
        }
}

function checkboxClickHandler(e) {
        if (typeof e == 'undefined') {
                e = window.event;
        }
        if ( !e.shiftKey || lastCheckbox === null ) {
                lastCheckbox = this.index;
                return true;
        }
        var endState = this.checked;
        var start, finish;
        if ( this.index < lastCheckbox ) {
                start = this.index + 1;
                finish = lastCheckbox;
        } else {
                start = lastCheckbox;
                finish = this.index - 1;
        }
        for (var i = start; i <= finish; ++i ) {
                checkboxes[i].checked = endState;
                if( i > start && typeof checkboxes[i].onchange == 'function' )
                        checkboxes[i].onchange(); // fire triggers
        }
        lastCheckbox = this.index;
        return true;
}


/*
        Written by Jonathan Snook, http://www.snook.ca/jonathan
        Add-ons by Robert Nyman, http://www.robertnyman.com
        Author says "The credit comment is all it takes, no license. Go crazy with it!:-)"
        From http://www.robertnyman.com/2005/11/07/the-ultimate-getelementsbyclassname/
*/
function getElementsByClassName(oElm, strTagName, oClassNames){
        var arrReturnElements = new Array();
        if ( typeof( oElm.getElementsByClassName ) == "function" ) {
                /* Use a native implementation where possible FF3, Saf3.2, Opera 9.5 */
                var arrNativeReturn = oElm.getElementsByClassName( oClassNames );
                if ( strTagName == "*" )
                        return arrNativeReturn;
                for ( var h=0; h < arrNativeReturn.length; h++ ) {
                        if( arrNativeReturn[h].tagName.toLowerCase() == strTagName.toLowerCase() )
                                arrReturnElements[arrReturnElements.length] = arrNativeReturn[h];
                }
                return arrReturnElements;
        }
        var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
        var arrRegExpClassNames = new Array();
        if(typeof oClassNames == "object"){
                for(var i=0; i<oClassNames.length; i++){
                        arrRegExpClassNames[arrRegExpClassNames.length] =
                                new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + "(\\s|$)");
                }
        }
        else{
                arrRegExpClassNames[arrRegExpClassNames.length] =
                        new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)");
        }
        var oElement;
        var bMatchesAll;
        for(var j=0; j<arrElements.length; j++){
                oElement = arrElements[j];
                bMatchesAll = true;
                for(var k=0; k<arrRegExpClassNames.length; k++){
                        if(!arrRegExpClassNames[k].test(oElement.className)){
                                bMatchesAll = false;
                                break;
                        }
                }
                if(bMatchesAll){
                        arrReturnElements[arrReturnElements.length] = oElement;
                }
        }
        return (arrReturnElements)
}

function redirectToFragment(fragment) {
        var match = navigator.userAgent.match(/AppleWebKit\/(\d+)/);
        if (match) {
                var webKitVersion = parseInt(match[1]);
                if (webKitVersion < 420) {
                        // Released Safari w/ WebKit 418.9.1 messes up horribly
                        // Nightlies of 420+ are ok
                        return;
                }
        }
        if (is_gecko) {
                // Mozilla needs to wait until after load, otherwise the window doesn't scroll
                addOnloadHook(function () {
                        if (window.location.hash == "")
                                window.location.hash = fragment;
                });
        } else {
                if (window.location.hash == "")
                        window.location.hash = fragment;
        }
}

/*
 * Table sorting script based on one (c) 1997-2006 Stuart Langridge and Joost
 * de Valk:
 * http://www.joostdevalk.nl/code/sortable-table/
 * http://www.kryogenix.org/code/browser/sorttable/
 *
 * @todo don't break on colspans/rowspans (bug 8028)
 * @todo language-specific digit grouping/decimals (bug 8063)
 * @todo support all accepted date formats (bug 8226)
 */

var ts_image_path = stylepath+"/common/images/";
var ts_image_up = "sort_up.gif";
var ts_image_down = "sort_down.gif";
var ts_image_none = "sort_none.gif";
var ts_europeandate = wgContentLanguage != "en"; // The non-American-inclined can change to "true"
var ts_alternate_row_colors = false;
var ts_number_transform_table = null;
var ts_number_regex = null;

function sortables_init() {
        var idnum = 0;
        // Find all tables with class sortable and make them sortable
        var tables = getElementsByClassName(document, "table", "sortable");
        for (var ti = 0; ti < tables.length ; ti++) {
                if (!tables[ti].id) {
                        tables[ti].setAttribute('id','sortable_table_id_'+idnum);
                        ++idnum;
                }
                ts_makeSortable(tables[ti]);
        }
}

function ts_makeSortable(table) {
        var firstRow;
        if (table.rows && table.rows.length > 0) {
                if (table.tHead && table.tHead.rows.length > 0) {
                        firstRow = table.tHead.rows[table.tHead.rows.length-1];
                } else {
                        firstRow = table.rows[0];
                }
        }
        if (!firstRow) return;

        // We have a first row: assume it's the header, and make its contents clickable links
        for (var i = 0; i < firstRow.cells.length; i++) {
                var cell = firstRow.cells[i];
                if ((" "+cell.className+" ").indexOf(" unsortable ") == -1) {
                        cell.innerHTML += '&nbsp;&nbsp;'
                                + '<a href="#" class="sortheader" '
                                + 'onclick="ts_resortTable(this);return false;">'
                                + '<span class="sortarrow">'
                                + '<img src="'
                                + ts_image_path
                                + ts_image_none
                                + '" alt="&darr;"/></span></a>';
                }
        }
        if (ts_alternate_row_colors) {
                ts_alternate(table);
        }
}

function ts_getInnerText(el) {
        return getInnerText( el );
}

function ts_resortTable(lnk) {
        // get the span
        var span = lnk.getElementsByTagName('span')[0];

        var td = lnk.parentNode;
        var tr = td.parentNode;
        var column = td.cellIndex;

        var table = tr.parentNode;
        while (table && !(table.tagName && table.tagName.toLowerCase() == 'table'))
                table = table.parentNode;
        if (!table) return;

        if (table.rows.length <= 1) return;

        // Generate the number transform table if it's not done already
        if (ts_number_transform_table == null) {
                ts_initTransformTable();
        }

        // Work out a type for the column
        // Skip the first row if that's where the headings are
        var rowStart = (table.tHead && table.tHead.rows.length > 0 ? 0 : 1);

        var itm = "";
        for (var i = rowStart; i < table.rows.length; i++) {
                if (table.rows[i].cells.length > column) {
                        itm = ts_getInnerText(table.rows[i].cells[column]);
                        itm = itm.replace(/^[\s\xa0]+/, "").replace(/[\s\xa0]+$/, "");
                        if (itm != "") break;
                }
        }

        // TODO: bug 8226, localised date formats
        var sortfn = ts_sort_generic;
        var preprocessor = ts_toLowerCase;
        if (/^\d\d[\/. -][a-zA-Z]{3}[\/. -]\d\d\d\d$/.test(itm)) {
                preprocessor = ts_dateToSortKey;
        } else if (/^\d\d[\/.-]\d\d[\/.-]\d\d\d\d$/.test(itm)) {
                preprocessor = ts_dateToSortKey;
        } else if (/^\d\d[\/.-]\d\d[\/.-]\d\d$/.test(itm)) {
                preprocessor = ts_dateToSortKey;
        // pound dollar euro yen currency cents
        } else if (/(^[\u00a3$\u20ac\u00a4\u00a5]|\u00a2$)/.test(itm)) {
                preprocessor = ts_currencyToSortKey;
        } else if (ts_number_regex.test(itm)) {
                preprocessor = ts_parseFloat;
        }

        var reverse = (span.getAttribute("sortdir") == 'down');

        var newRows = new Array();
        var staticRows = new Array();
        for (var j = rowStart; j < table.rows.length; j++) {
                var row = table.rows[j];
                if((" "+row.className+" ").indexOf(" unsortable ") < 0) {
                        var keyText = ts_getInnerText(row.cells[column]);
                        if(keyText == undefined) {
                                keyText = ""; 
                        }
                        var oldIndex = (reverse ? -j : j);
                        var preprocessed = preprocessor( keyText.replace(/^[\s\xa0]+/, "").replace(/[\s\xa0]+$/, "") );

                        newRows[newRows.length] = new Array(row, preprocessed, oldIndex);
                } else staticRows[staticRows.length] = new Array(row, false, j-rowStart);
        }

        newRows.sort(sortfn);

        var arrowHTML;
        if (reverse) {
                arrowHTML = '<img src="'+ ts_image_path + ts_image_down + '" alt="&darr;"/>';
                newRows.reverse();
                span.setAttribute('sortdir','up');
        } else {
                arrowHTML = '<img src="'+ ts_image_path + ts_image_up + '" alt="&uarr;"/>';
                span.setAttribute('sortdir','down');
        }

        for (var i = 0; i < staticRows.length; i++) {
                var row = staticRows[i];
                newRows.splice(row[2], 0, row);
        }

        // We appendChild rows that already exist to the tbody, so it moves them rather than creating new ones
        // don't do sortbottom rows
        for (var i = 0; i < newRows.length; i++) {
                if ((" "+newRows[i][0].className+" ").indexOf(" sortbottom ") == -1)
                        table.tBodies[0].appendChild(newRows[i][0]);
        }
        // do sortbottom rows only
        for (var i = 0; i < newRows.length; i++) {
                if ((" "+newRows[i][0].className+" ").indexOf(" sortbottom ") != -1)
                        table.tBodies[0].appendChild(newRows[i][0]);
        }

        // Delete any other arrows there may be showing
        var spans = getElementsByClassName(tr, "span", "sortarrow");
        for (var i = 0; i < spans.length; i++) {
                spans[i].innerHTML = '<img src="'+ ts_image_path + ts_image_none + '" alt="&darr;"/>';
        }
        span.innerHTML = arrowHTML;

        if (ts_alternate_row_colors) {
                ts_alternate(table);
        }
}

function ts_initTransformTable() {
        if ( typeof wgSeparatorTransformTable == "undefined"
                        || ( wgSeparatorTransformTable[0] == '' && wgDigitTransformTable[2] == '' ) )
        {
                digitClass = "[0-9,.]";
                ts_number_transform_table = false;
        } else {
                ts_number_transform_table = {};
                // Unpack the transform table
                // Separators
                ascii = wgSeparatorTransformTable[0].split("\t");
                localised = wgSeparatorTransformTable[1].split("\t");
                for ( var i = 0; i < ascii.length; i++ ) {
                        ts_number_transform_table[localised[i]] = ascii[i];
                }
                // Digits
                ascii = wgDigitTransformTable[0].split("\t");
                localised = wgDigitTransformTable[1].split("\t");
                for ( var i = 0; i < ascii.length; i++ ) {
                        ts_number_transform_table[localised[i]] = ascii[i];
                }

                // Construct regex for number identification
                digits = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ',', '\\.'];
                maxDigitLength = 1;
                for ( var digit in ts_number_transform_table ) {
                        // Escape regex metacharacters
                        digits.push(
                                digit.replace( /[\\\\$\*\+\?\.\(\)\|\{\}\[\]\-]/,
                                        function( s ) { return '\\' + s; } )
                        );
                        if (digit.length > maxDigitLength) {
                                maxDigitLength = digit.length;
                        }
                }
                if ( maxDigitLength > 1 ) {
                        digitClass = '[' + digits.join( '', digits ) + ']';
                } else {
                        digitClass = '(' + digits.join( '|', digits ) + ')';
                }
        }

        // We allow a trailing percent sign, which we just strip.  This works fine
        // if percents and regular numbers aren't being mixed.
        ts_number_regex = new RegExp(
                "^(" +
                        "[+-]?[0-9][0-9,]*(\\.[0-9,]*)?(E[+-]?[0-9][0-9,]*)?" + // Fortran-style scientific
                        "|" +
                        "[+-]?" + digitClass + "+%?" + // Generic localised
                ")$", "i"
        );
}

function ts_toLowerCase( s ) {
        return s.toLowerCase();
}

function ts_dateToSortKey(date) {
        // y2k notes: two digit years less than 50 are treated as 20XX, greater than 50 are treated as 19XX
        if (date.length == 11) {
                switch (date.substr(3,3).toLowerCase()) {
                        case "jan": var month = "01"; break;
                        case "feb": var month = "02"; break;
                        case "mar": var month = "03"; break;
                        case "apr": var month = "04"; break;
                        case "may": var month = "05"; break;
                        case "jun": var month = "06"; break;
                        case "jul": var month = "07"; break;
                        case "aug": var month = "08"; break;
                        case "sep": var month = "09"; break;
                        case "oct": var month = "10"; break;
                        case "nov": var month = "11"; break;
                        case "dec": var month = "12"; break;
                        // default: var month = "00";
                }
                return date.substr(7,4)+month+date.substr(0,2);
        } else if (date.length == 10) {
                if (ts_europeandate == false) {
                        return date.substr(6,4)+date.substr(0,2)+date.substr(3,2);
                } else {
                        return date.substr(6,4)+date.substr(3,2)+date.substr(0,2);
                }
        } else if (date.length == 8) {
                yr = date.substr(6,2);
                if (parseInt(yr) < 50) {
                        yr = '20'+yr;
                } else {
                        yr = '19'+yr;
                }
                if (ts_europeandate == true) {
                        return yr+date.substr(3,2)+date.substr(0,2);
                } else {
                        return yr+date.substr(0,2)+date.substr(3,2);
                }
        }
        return "00000000";
}

function ts_parseFloat( s ) {
        if ( !s ) {
                return 0;
        }
        if (ts_number_transform_table != false) {
                var newNum = '', c;

                for ( var p = 0; p < s.length; p++ ) {
                        c = s.charAt( p );
                        if (c in ts_number_transform_table) {
                                newNum += ts_number_transform_table[c];
                        } else {
                                newNum += c;
                        }
                }
                s = newNum;
        }

        num = parseFloat(s.replace(/,/g, ""));
        return (isNaN(num) ? 0 : num);
}

function ts_currencyToSortKey( s ) {
        return ts_parseFloat(s.replace(/[^0-9.,]/g,''));
}

function ts_sort_generic(a, b) {
        return a[1] < b[1] ? -1 : a[1] > b[1] ? 1 : a[2] - b[2];
}

function ts_alternate(table) {
        // Take object table and get all it's tbodies.
        var tableBodies = table.getElementsByTagName("tbody");
        // Loop through these tbodies
        for (var i = 0; i < tableBodies.length; i++) {
                // Take the tbody, and get all it's rows
                var tableRows = tableBodies[i].getElementsByTagName("tr");
                // Loop through these rows
                // Start at 1 because we want to leave the heading row untouched
                for (var j = 0; j < tableRows.length; j++) {
                        // Check if j is even, and apply classes for both possible results
                        var oldClasses = tableRows[j].className.split(" ");
                        var newClassName = "";
                        for (var k = 0; k < oldClasses.length; k++) {
                                if (oldClasses[k] != "" && oldClasses[k] != "even" && oldClasses[k] != "odd")
                                        newClassName += oldClasses[k] + " ";
                        }
                        tableRows[j].className = newClassName + (j % 2 == 0 ? "even" : "odd");
                }
        }
}

/*
 * End of table sorting code
 */


/**
 * Add a cute little box at the top of the screen to inform the user of
 * something, replacing any preexisting message.
 *
 * @param String -or- Dom Object message HTML to be put inside the right div
 * @param String className   Used in adding a class; should be different for each
 *   call to allow CSS/JS to hide different boxes.  null = no class used.
 * @return Boolean       True on success, false on failure
 */
function jsMsg( message, className ) {
        if ( !document.getElementById ) {
                return false;
        }
        // We special-case skin structures provided by the software.  Skins that
        // choose to abandon or significantly modify our formatting can just define
        // an mw-js-message div to start with.
        var messageDiv = document.getElementById( 'mw-js-message' );
        if ( !messageDiv ) {
                messageDiv = document.createElement( 'div' );
                if ( document.getElementById( 'column-content' )
                && document.getElementById( 'content' ) ) {
                        // MonoBook, presumably
                        document.getElementById( 'content' ).insertBefore(
                                messageDiv,
                                document.getElementById( 'content' ).firstChild
                        );
                } else if ( document.getElementById('content')
                && document.getElementById( 'article' ) ) {
                        // Non-Monobook but still recognizable (old-style)
                        document.getElementById( 'article').insertBefore(
                                messageDiv,
                                document.getElementById( 'article' ).firstChild
                        );
                } else {
                        return false;
                }
        }

        messageDiv.setAttribute( 'id', 'mw-js-message' );
        messageDiv.style.display = 'block';
        if( className ) {
                messageDiv.setAttribute( 'class', 'mw-js-message-'+className );
        }

        if (typeof message === 'object') {
                while (messageDiv.hasChildNodes()) // Remove old content
                        messageDiv.removeChild(messageDiv.firstChild);
                messageDiv.appendChild (message); // Append new content
        }
        else {
                messageDiv.innerHTML = message;
        }
        return true;
}

/**
 * Inject a cute little progress spinner after the specified element
 *
 * @param element Element to inject after
 * @param id Identifier string (for use with removeSpinner(), below)
 */
function injectSpinner( element, id ) {
        var spinner = document.createElement( "img" );
        spinner.id = "mw-spinner-" + id;
        spinner.src = stylepath + "/common/images/spinner.gif";
        spinner.alt = spinner.title = "...";
        if( element.nextSibling ) {
                element.parentNode.insertBefore( spinner, element.nextSibling );
        } else {
                element.parentNode.appendChild( spinner );
        }
}

/**
 * Remove a progress spinner added with injectSpinner()
 *
 * @param id Identifier string
 */
function removeSpinner( id ) {
        var spinner = document.getElementById( "mw-spinner-" + id );
        if( spinner ) {
                spinner.parentNode.removeChild( spinner );
        }
}

function runOnloadHook() {
        // don't run anything below this for non-dom browsers
        if (doneOnloadHook || !(document.getElementById && document.getElementsByTagName)) {
                return;
        }

        // set this before running any hooks, since any errors below
        // might cause the function to terminate prematurely
        doneOnloadHook = true;

        updateTooltipAccessKeys( null );
        akeytt( null );
        setupCheckboxShiftClick();
        sortables_init();

        // Run any added-on functions
        for (var i = 0; i < onloadFuncts.length; i++) {
                onloadFuncts[i]();
        }
}

/**
 * Add an event handler to an element
 *
 * @param Element element Element to add handler to
 * @param String attach Event to attach to
 * @param callable handler Event handler callback
 */
function addHandler( element, attach, handler ) {
        if( window.addEventListener ) {
                element.addEventListener( attach, handler, false );
        } else if( window.attachEvent ) {
                element.attachEvent( 'on' + attach, handler );
        }
}

/**
 * Add a click event handler to an element
 *
 * @param Element element Element to add handler to
 * @param callable handler Event handler callback
 */
function addClickHandler( element, handler ) {
        addHandler( element, 'click', handler );
}

/**
 * Removes an event handler from an element
 *
 * @param Element element Element to remove handler from
 * @param String remove Event to remove
 * @param callable handler Event handler callback to remove
 */
function removeHandler( element, remove, handler ) {
        if( window.removeEventListener ) {
                element.removeEventListener( remove, handler, false );
        } else if( window.detachEvent ) {
                element.detachEvent( 'on' + remove, handler );
        }
}
//note: all skins should call runOnloadHook() at the end of html output,
//      so the below should be redundant. It's there just in case.
hookEvent("load", runOnloadHook);