[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 is_safari = clientPC.indexOf('applewebkit') != -1 &&
        clientPC.indexOf('spoofer') == -1;
var is_khtml = navigator.vendor == 'KDE' ||
        ( document.childNodes && !document.all && !navigator.taintEnabled );
// For accesskeys; note that FF3+ is included here!
var is_ff2 = /firefox\/[2-9]|minefield\/3/.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 );
}

// 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 = [];
}

function addOnloadHook(hookFunct) {
        // Allows add-on scripts to add onload functions
        onloadFuncts[onloadFuncts.length] = hookFunct;
}

function hookEvent(hookName, hookFunct) {
        if (window.addEventListener) {
                window.addEventListener(hookName, hookFunct, false);
        } else if (window.attachEvent) {
                window.attachEvent("on" + hookName, hookFunct);
        }
}

// document.write special stylesheet links
if (typeof stylepath != 'undefined' && typeof skin != 'undefined') {
        if (is_opera_preseven) {
                document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/Opera6Fixes.css">');
        } else if (is_opera_seven && !is_opera_95) {
                document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/Opera7Fixes.css">');
        } else if (is_khtml) {
                document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/KHTMLFixes.css">');
        }
}

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

// for enhanced RecentChanges
function toggleVisibility(_levelId, _otherId, _linkId) {
        var thisLevel = document.getElementById(_levelId);
        var otherLevel = document.getElementById(_otherId);
        var linkLevel = document.getElementById(_linkId);
        if (thisLevel.style.display == 'none') {
                thisLevel.style.display = 'block';
                otherLevel.style.display = 'none';
                linkLevel.style.display = 'inline';
        } else {
                thisLevel.style.display = 'none';
                otherLevel.style.display = 'inline';
                linkLevel.style.display = 'none';
        }
}

// generate toc from prefs form, fold sections
// XXX: needs testing on IE/Mac and safari
// more comments to follow
function tabbedprefs() {
        var prefform = document.getElementById('preferences');
        if (!prefform || !document.createElement) {
                return;
        }
        if (prefform.nodeName.toLowerCase() == 'a') {
                return; // Occasional IE problem
        }
        prefform.className = prefform.className + 'jsprefs';
        var sections = [];
        var children = prefform.childNodes;
        var seci = 0;
        for (var i = 0; i < children.length; i++) {
                if (children[i].nodeName.toLowerCase() == 'fieldset') {
                        children[i].id = 'prefsection-' + seci;
                        children[i].className = 'prefsection';
                        if (is_opera || is_khtml) {
                                children[i].className = 'prefsection operaprefsection';
                        }
                        var legends = children[i].getElementsByTagName('legend');
                        sections[seci] = {};
                        legends[0].className = 'mainLegend';
                        if (legends[0] && legends[0].firstChild.nodeValue) {
                                sections[seci].text = legends[0].firstChild.nodeValue;
                        } else {
                                sections[seci].text = '# ' + seci;
                        }
                        sections[seci].secid = children[i].id;
                        seci++;
                        if (sections.length != 1) {
                                children[i].style.display = 'none';
                        } else {
                                var selectedid = children[i].id;
                        }
                }
        }
        var toc = document.createElement('ul');
        toc.id = 'preftoc';
        toc.selectedid = selectedid;
        for (i = 0; i < sections.length; i++) {
                var li = document.createElement('li');
                if (i === 0) {
                        li.className = 'selected';
                }
                var a = document.createElement('a');
                a.href = '#' + sections[i].secid;
                a.onmousedown = a.onclick = uncoversection;
                a.appendChild(document.createTextNode(sections[i].text));
                a.secid = sections[i].secid;
                li.appendChild(a);
                toc.appendChild(li);
        }
        prefform.parentNode.insertBefore(toc, prefform.parentNode.childNodes[0]);
        document.getElementById('prefsubmit').id = 'prefcontrol';
}

function uncoversection() {
        var oldsecid = this.parentNode.parentNode.selectedid;
        var newsec = document.getElementById(this.secid);
        if (oldsecid != this.secid) {
                var ul = document.getElementById('preftoc');
                document.getElementById(oldsecid).style.display = 'none';
                newsec.style.display = 'block';
                ul.selectedid = this.secid;
                var lis = ul.getElementsByTagName('li');
                for (var i = 0; i< lis.length; i++) {
                        lis[i].className = '';
                }
                this.parentNode.className = 'selected';
        }
        return false;
}

// Timezone stuff
// tz in format [+-]HHMM
function checkTimezone(tz, msg) {
        var localclock = new Date();
        // returns negative offset from GMT in minutes
        var tzRaw = localclock.getTimezoneOffset();
        var tzHour = Math.floor( Math.abs(tzRaw) / 60);
        var tzMin = Math.abs(tzRaw) % 60;
        var tzString = ((tzRaw >= 0) ? "-" : "+") + ((tzHour < 10) ? "0" : "") + tzHour + ((tzMin < 10) ? "0" : "") + tzMin;
        if (tz != tzString) {
                var junk = msg.split('$1');
                document.write(junk[0] + "UTC" + tzString + junk[1]);
        }
}

function unhidetzbutton() {
        var tzb = document.getElementById('guesstimezonebutton');
        if (tzb) {
                tzb.style.display = 'inline';
        }
}

// in [-]HH:MM format...
// won't yet work with non-even tzs
function fetchTimezone() {
        // FIXME: work around Safari bug
        var localclock = new Date();
        // returns negative offset from GMT in minutes
        var tzRaw = localclock.getTimezoneOffset();
        var tzHour = Math.floor( Math.abs(tzRaw) / 60);
        var tzMin = Math.abs(tzRaw) % 60;
        var tzString = ((tzRaw >= 0) ? "-" : "") + ((tzHour < 10) ? "0" : "") + tzHour +
                ":" + ((tzMin < 10) ? "0" : "") + tzMin;
        return tzString;
}

function guessTimezone(box) {
        document.getElementsByName("wpHourDiff")[0].value = fetchTimezone();
}

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

                var linkHolder = document.getElementById('toctitle');
                if (!linkHolder) {
                        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 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";
        } else {
                changeText(toggleLink, tocShowText);
                toc.style.display = 'none';
                document.cookie = "hidetoc=1";
        }
}

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

// this function generates the actual toolbar buttons with localized text
// we use it to avoid creating the toolbar where javascript is not enabled
function addButton(imageFile, speedTip, tagOpen, tagClose, sampleText, imageId) {
        // Don't generate buttons for browsers which don't fully
        // support it.
        mwEditButtons[mwEditButtons.length] =
                {"imageId": imageId,
                 "imageFile": imageFile,
                 "speedTip": speedTip,
                 "tagOpen": tagOpen,
                 "tagClose": tagClose,
                 "sampleText": sampleText};
}

// this function generates the actual toolbar buttons with localized text
// we use it to avoid creating the toolbar where javascript is not enabled
function mwInsertEditButton(parent, item) {
        var image = document.createElement("img");
        image.width = 23;
        image.height = 22;
        image.className = "mw-toolbar-editbutton";
        if (item.imageId) image.id = item.imageId;
        image.src = item.imageFile;
        image.border = 0;
        image.alt = item.speedTip;
        image.title = item.speedTip;
        image.style.cursor = "pointer";
        image.onclick = function() {
                insertTags(item.tagOpen, item.tagClose, item.sampleText);
                return false;
        };

        parent.appendChild(image);
        return true;
}

function mwSetupToolbar() {
        var toolbar = document.getElementById('toolbar');
        if (!toolbar) { return false; }

        var textbox = document.getElementById('wpTextbox1');
        if (!textbox) { return false; }

        // Don't generate buttons for browsers which don't fully
        // support it.
        if (!(document.selection && document.selection.createRange)
                && textbox.selectionStart === null) {
                return false;
        }

        for (var i = 0; i < mwEditButtons.length; i++) {
                mwInsertEditButton(toolbar, mwEditButtons[i]);
        }
        for (var i = 0; i < mwCustomEditButtons.length; i++) {
                mwInsertEditButton(toolbar, mwCustomEditButtons[i]);
        }
        return true;
}

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,"&amp;");
        re = new RegExp('"',"g");
        text = text.replace(re,"&quot;");
        re = new RegExp('<',"g");
        text = text.replace(re,"&lt;");
        re = new RegExp('>',"g");
        text = text.replace(re,"&gt;");
        return text;
}

// apply tagOpen/tagClose to selection in textarea,
// use sampleText instead of selection if there is none
function insertTags(tagOpen, tagClose, sampleText) {
        var txtarea;
        if (document.editform) {
                txtarea = document.editform.wpTextbox1;
        } else {
                // some alternate form? take the first one we can find
                var areas = document.getElementsByTagName('textarea');
                txtarea = areas[0];
        }
        var selText, isSample = false;

        if (document.selection  && document.selection.createRange) { // IE/Opera

                //save window scroll position
                if (document.documentElement && document.documentElement.scrollTop)
                        var winScroll = document.documentElement.scrollTop
                else if (document.body)
                        var winScroll = document.body.scrollTop;
                //get current selection  
                txtarea.focus();
                var range = document.selection.createRange();
                selText = range.text;
                //insert tags
                checkSelectedText();
                range.text = tagOpen + selText + tagClose;
                //mark sample text as selected
                if (isSample && range.moveStart) {
                        if (window.opera)
                                tagClose = tagClose.replace(/\n/g,'');
                        range.moveStart('character', - tagClose.length - selText.length); 
                        range.moveEnd('character', - tagClose.length); 
                }
                range.select();   
                //restore window scroll position
                if (document.documentElement && document.documentElement.scrollTop)
                        document.documentElement.scrollTop = winScroll
                else if (document.body)
                        document.body.scrollTop = winScroll;

        } else if (txtarea.selectionStart || txtarea.selectionStart == '0') { // Mozilla

                //save textarea scroll position
                var textScroll = txtarea.scrollTop;
                //get current selection
                txtarea.focus();
                var startPos = txtarea.selectionStart;
                var endPos = txtarea.selectionEnd;
                selText = txtarea.value.substring(startPos, endPos);
                //insert tags
                checkSelectedText();
                txtarea.value = txtarea.value.substring(0, startPos)
                        + tagOpen + selText + tagClose
                        + txtarea.value.substring(endPos, txtarea.value.length);
                //set new selection
                if (isSample) {
                        txtarea.selectionStart = startPos + tagOpen.length;
                        txtarea.selectionEnd = startPos + tagOpen.length + selText.length;
                } else {
                        txtarea.selectionStart = startPos + tagOpen.length + selText.length + tagClose.length;
                        txtarea.selectionEnd = txtarea.selectionStart;
                }
                //restore textarea scroll position
                txtarea.scrollTop = textScroll;
        } 

        function checkSelectedText(){
                if (!selText) {
                        selText = sampleText;
                        isSample = true;
                } else if (selText.charAt(selText.length - 1) == ' ') { //exclude ending space char
                        selText = selText.substring(0, selText.length - 1);
                        tagClose += ' '
                } 
        }

}


/**
 * Set the accesskey prefix based on browser detection.
 */
var tooltipAccessKeyPrefix = 'alt-';
if (is_opera) {
        tooltipAccessKeyPrefix = 'shift-esc-';
} else if (is_safari
           || navigator.userAgent.toLowerCase().indexOf('mac') != -1
           || navigator.userAgent.toLowerCase().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 ) {
                // skins without a "column-one" element don't seem to have links with accesskeys either
                var columnOne = document.getElementById("column-one");
                if ( columnOne )
                        updateTooltipAccessKeys( columnOne.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");
                var key = element.getAttribute("accesskey");
                if ( key && tooltipAccessKeyRegexp.exec(tip) ) {
                        tip = tip.replace(tooltipAccessKeyRegexp,
                                          "["+tooltipAccessKeyPrefix+key+"]");
                        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 node = document.getElementById(portlet);
        if ( !node ) return null;
        node = node.getElementsByTagName( "ul" )[0];
        if ( !node ) return null;

        var link = document.createElement( "a" );
        link.appendChild( document.createTextNode( text ) );
        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;
}


/**
 * 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;
                        }
                }
        }
}

function setupRightClickEdit() {
        if (document.getElementsByTagName) {
                var spans = document.getElementsByTagName('span');
                for (var i = 0; i < spans.length; i++) {
                        var el = spans[i];
                        if(el.className == 'editsection') {
                                addRightClickEditHandler(el);
                        }
                }
        }
}

function addRightClickEditHandler(el) {
        for (var i = 0; i < el.childNodes.length; i++) {
                var link = el.childNodes[i];
                if (link.nodeType == 1 && link.nodeName.toLowerCase() == 'a') {
                        var editHref = link.getAttribute('href');
                        // find the enclosing (parent) header
                        var prev = el.parentNode;
                        if (prev && prev.nodeType == 1 &&
                        prev.nodeName.match(/^[Hh][1-6]$/)) {
                                prev.oncontextmenu = function(e) {
                                        if (!e) { e = window.event; }
                                        // e is now the event in all browsers
                                        var targ;
                                        if (e.target) { targ = e.target; }
                                        else if (e.srcElement) { targ = e.srcElement; }
                                        if (targ.nodeType == 3) { // defeat Safari bug
                                                targ = targ.parentNode;
                                        }
                                        // targ is now the target element

                                        // We don't want to deprive the noble reader of a context menu
                                        // for the section edit link, do we?  (Might want to extend this
                                        // to all <a>'s?)
                                        if (targ.nodeName.toLowerCase() != 'a'
                                        || targ.parentNode.className != 'editsection') {
                                                document.location = editHref;
                                                return false;
                                        }
                                        return true;
                                };
                        }
                }
        }
}

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;
        }
        lastCheckbox = this.index;
        return true;
}

function toggle_element_activation(ida,idb) {
        if (!document.getElementById) {
                return;
        }
        document.getElementById(ida).disabled=true;
        document.getElementById(idb).disabled=false;
}

function toggle_element_check(ida,idb) {
        if (!document.getElementById) {
                return;
        }
        document.getElementById(ida).checked=true;
        document.getElementById(idb).checked=false;
}

/**
 * Restore the edit box scroll state following a preview operation,
 * and set up a form submission handler to remember this state
 */
function scrollEditBox() {
        var editBox = document.getElementById( 'wpTextbox1' );
        var scrollTop = document.getElementById( 'wpScrolltop' );
        var editForm = document.getElementById( 'editform' );
        if( editBox && scrollTop ) {
                if( scrollTop.value )
                        editBox.scrollTop = scrollTop.value;
                addHandler( editForm, 'submit', function() {
                        document.getElementById( 'wpScrolltop' ).value = document.getElementById( 'wpTextbox1' ).scrollTop; 
                } );
        }
}
hookEvent( 'load', scrollEditBox );

/*
        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 arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
        var arrReturnElements = new Array();
        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  by Joost de Valk, check it out at http://www.joostdevalk.nl/code/sortable-table/.
 * Based on a script from http://www.kryogenix.org/code/browser/sorttable/.
 * Distributed under the MIT license: http://www.kryogenix.org/code/browser/licence.html .
 *
 * Copyright (c) 1997-2006 Stuart Langridge, Joost de Valk.
 *
 * @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 = true;
var SORT_COLUMN_INDEX;

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) {
        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;
}

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;

        // Work out a type for the column
        if (table.rows.length <= 1) return;

        // 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;
                }
        }

        sortfn = ts_sort_caseinsensitive;
        if (itm.match(/^\d\d[\/. -][a-zA-Z]{3}[\/. -]\d\d\d\d$/))
                sortfn = ts_sort_date;
        if (itm.match(/^\d\d[\/.-]\d\d[\/.-]\d\d\d\d$/))
                sortfn = ts_sort_date;
        if (itm.match(/^\d\d[\/.-]\d\d[\/.-]\d\d$/))
                sortfn = ts_sort_date;
        if (itm.match(/^[\u00a3$\u20ac]/)) // pound dollar euro
                sortfn = ts_sort_currency;
        if (itm.match(/^[\d.,]+\%?$/))
                sortfn = ts_sort_numeric;

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

        var newRows = new Array();
        for (var j = rowStart; j < table.rows.length; j++) {
                var row = table.rows[j];
                var keyText = ts_getInnerText(row.cells[column]);
                var oldIndex = (reverse ? -j : j);

                newRows[newRows.length] = new Array(row, keyText, oldIndex);
        }

        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');
        }

        // 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;

        ts_alternate(table);            
}

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

function ts_sort_date(a,b) {
        var aa = ts_dateToSortKey(a[1]);
        var bb = ts_dateToSortKey(b[1]);
        return (aa < bb ? -1 : aa > bb ? 1 : a[2] - b[2]);
}

function ts_sort_currency(a,b) {
        var aa = ts_parseFloat(a[1].replace(/[^0-9.]/g,''));
        var bb = ts_parseFloat(b[1].replace(/[^0-9.]/g,''));
        return (aa != bb ? aa - bb : a[2] - b[2]);
}

function ts_sort_numeric(a,b) {
        var aa = ts_parseFloat(a[1]);
        var bb = ts_parseFloat(b[1]);
        return (aa != bb ? aa - bb : a[2] - b[2]);
}

function ts_sort_caseinsensitive(a,b) {
        var aa = a[1].toLowerCase();
        var bb = b[1].toLowerCase();
        return (aa < bb ? -1 : aa > bb ? 1 : a[2] - b[2]);
}

function ts_sort_default(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 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' );
        if( className ) {
                messageDiv.setAttribute( 'class', 'mw-js-message-'+className );
        }
        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;

        unhidetzbutton();
        tabbedprefs();
        updateTooltipAccessKeys( null );
        akeytt( null );
        scrollEditBox();
        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 );
}
//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);
hookEvent("load", mwSetupToolbar);