// MediaWiki JavaScript support functions
// MediaWiki 1.11 - modificato da Teodoro Di Bello 29/11/2007
// New Version 06/12/2007

var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var is_gecko = ((clientPC.indexOf('gecko')!=-1) && (clientPC.indexOf('spoofer')==-1)
                && (clientPC.indexOf('khtml') == -1) && (clientPC.indexOf('netscape/7.0')==-1));
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
var is_ff2_win = (clientPC.indexOf('firefox/2')!=-1 || clientPC.indexOf('minefield/3')!=-1) && clientPC.indexOf('windows')!=-1;
var is_ff2_x11 = (clientPC.indexOf('firefox/2')!=-1 || clientPC.indexOf('minefield/3')!=-1) && 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 = (clientPC.search(/opera\/(9.[5-9]|[1-9][0-9])/)!=-1);
}

// 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_opera_95) {
		document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/Opera95Fixes.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';
	}
}

function historyRadios(parent) {
	var inputs = parent.getElementsByTagName('input');
	var radios = [];
	for (var i = 0; i < inputs.length; i++) {
		if (inputs[i].name == "diff" || inputs[i].name == "oldid") {
			radios[radios.length] = inputs[i];
		}
	}
	return radios;
}

// check selection and tweak visibility/class onclick
function diffcheck() {
	var dli = false; // the li where the diff radio is checked
	var oli = false; // the li where the oldid radio is checked
	var hf = document.getElementById('pagehistory');
	if (!hf) {
		return true;
	}
	var lis = hf.getElementsByTagName('li');
	for (var i=0;i<lis.length;i++) {
		var inputs = historyRadios(lis[i]);
		if (inputs[1] && inputs[0]) {
			if (inputs[1].checked || inputs[0].checked) { // this row has a checked radio button
				if (inputs[1].checked && inputs[0].checked && inputs[0].value == inputs[1].value) {
					return false;
				}
				if (oli) { // it's the second checked radio
					if (inputs[1].checked) {
						oli.className = "selected";
						return false;
					}
				} else if (inputs[0].checked) {
					return false;
				}
				if (inputs[0].checked) {
					dli = lis[i];
				}
				if (!oli) {
					inputs[0].style.visibility = 'hidden';
				}
				if (dli) {
					inputs[1].style.visibility = 'hidden';
				}
				lis[i].className = "selected";
				oli = lis[i];
			}  else { // no radio is checked in this row
				if (!oli) {
					inputs[0].style.visibility = 'hidden';
				} else {
					inputs[0].style.visibility = 'visible';
				}
				if (dli) {
					inputs[1].style.visibility = 'hidden';
				} else {
					inputs[1].style.visibility = 'visible';
				}
				lis[i].className = "";
			}
		}
	}
	return true;
}

// page history stuff
// attach event handlers to the input elements on history page
function histrowinit() {
	var hf = document.getElementById('pagehistory');
	if (!hf) {
		return;
	}
	var lis = hf.getElementsByTagName('li');
	for (var i = 0; i < lis.length; i++) {
		var inputs = historyRadios(lis[i]);
		if (inputs[0] && inputs[1]) {
			inputs[0].onclick = diffcheck;
			inputs[1].onclick = diffcheck;
		}
	}
	diffcheck();
}

// 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;
}

/* @TDB 28/11/2007 BUG#8
	Aggiungo delle nuove funzionalità ai pulsanti tramite il campo sampleText:
		holdSel: per indicare che è necessario mantenere il testo selezionato
		fn: per definire una funzione da applicare al testo selezionato
*/
// apply tagOpen/tagClose to selection in textarea,
// use sampleText instead of selection if there is none
function insertTags(tagOpen, tagClose, sampleText) {
	var txtarea;
	// @TDB 28/11/2007 BUG#8: ctrl if sampleText contains extra-code and evaluate  it
	var fn = null, holdSel = false, nSelLine=0;
	fnInit();
	
	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
		//@TDB  28/11/2007: store total lines number  (IE lost newline-char bug workaround)
		var nTotLine = countLines(txtarea.value); 
		//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();
		
		// @TDB 28/11/2007 BUG#8: handle fn system
		// @TDB 06/12/2007 ctrl se e' necessario gestire testo selezionato
		if( fnHandleIE() )
			range.text = tagOpen + selText + tagClose;
		//@TDB 28/11/2007 IE lost newline-char bug workaround
		nSelLine = FixLostLines();

		//mark sample text as selected
		if ((isSample || holdSel) && range.moveStart) {// @TDB 28/11/2007 BUG#8: gestione holdSel
			if (window.opera)
				tagClose = tagClose.replace(/\n/g,'');
			range.moveStart('character', - tagClose.length - selText.length + nSelLine); //@TDB 28/11/2007 IE lost newline-char bug workaround
			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();
		// @TDB 28/11/2007 BUG#8: handle fn system
		fnHandleMozilla();
		txtarea.value = txtarea.value.substring(0, startPos)
			+ tagOpen + selText + tagClose
			+ txtarea.value.substring(endPos, txtarea.value.length);
		//set new selection
		if (isSample || holdSel) {// @TDB 28/11/2007 BUG#8: gestione holdSel
			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 += ' '
		} 
	}
	
	/* @TDB 28/11/2007 BUG#8: my support functions - START */
	function countLines(s)
	{
		var a = s.match(/\r\n/g);
		if (a) n = a.length; 
		else n = 0;
		return n;
	}

	function GetLostLines(s)
	{
		var nTotLine_New = countLines(txtarea.value);
		return nTotLine - nTotLine_New; //count lost newline
	}
	
	function FixLostLines()
	{
		var nLostLines = GetLostLines(selText);
		for(var i=0; i<nLostLines; i++) range.text = "\r\n";		
		return countLines(selText) - nLostLines;
	}
	
	function fnInit()
	{
		if( sampleText.substr(0,3) == "fn=" )
		{
			var fnText=null;
			eval(sampleText);
			sampleText = (fnText!=null) ? fnText : "";
		}
	}
	
	function fnHandleMozilla()
	{
		if(fn)
		{
			var s1 = txtarea.value.substring(0, startPos);
			var s2 = txtarea.value.substring(endPos);
			var oObj = fn(selText, s1);
			selText = oObj.selText;
			/* @TDB 06/12/2007
				su firefox al momento c'e' un bug per cui se il testo selezionato e' composto all'inizio da più di una riga vuote 
				non visualizza la selezione, in tal caso viene modificato erroneamente anche s1 */
			var re = /[\r\f\n]/;
			if( !( re.test(selText.charAt(0)) && re.test(selText.charAt(1)) ) )
				s1 = oObj.sBefore;
			startPos = s1.length;
			endPos = startPos + selText.length;
			txtarea.value = s1 + selText + s2;
		}
		return true;
	}
	
	//@TDB 06/12/2007: gestione selezione vuota
	function fnHandleIE()
	{
		if(fn)
		{
			//get text before selection two times
			//first time to handle IE lost newline-char bug 
			var s1 = null, 
					rBefore = (document.body.createTextRange) ? document.body.createTextRange() : null;
			//I check if it's possibile to exec the range fns
			if(rBefore && rBefore.moveToElementText && rBefore.setEndPoint)
			{
	  		rBefore.moveToElementText(txtarea);
				rBefore.setEndPoint("EndToStart", range);
	
				s1 = rBefore.text;
				//check if s1 is null/void means that selection start from text beginning 
				if(s1)
				{
					//non e' necessario (e non funziona) gestire il bug di fine linea se seltext e' vuoto
					if(range.text.length)
					{
						rBefore.text = s1;
						var nLostLine = GetLostLines(s1);
						for(var i=0; i<nLostLine; i++) s1+= "\r\n";
						
						//second time to do the requested task
						rBefore = document.body.createTextRange();
			  		rBefore.moveToElementText(txtarea);
						rBefore.setEndPoint("EndToStart", range);
					}
				}
				else //safe assignment
					s1 = "";
			}
			var oObj = fn(selText, s1);
			if(range.text.length)
			{
				selText = oObj.selText;
				if(oObj.sBefore) rBefore.text = oObj.sBefore;
				return true;
			}
			else
			{
				if(oObj.sBefore) rBefore.text = oObj.sBefore + tagOpen + selText + tagClose;
				range.setEndPoint("StartToEnd", rBefore);
				return false;
			}
		}
		return true;
	}
	/* @TDB 28/11/2007 BUG#8: my functions - END */
}


/**
 * 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_x11 || is_ff2_win) {
	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 );

var allmessages_nodelist = false;
var allmessages_modified = false;
var allmessages_timeout = false;
var allmessages_running = false;

function allmessagesmodified() {
	allmessages_modified = !allmessages_modified;
	allmessagesfilter();
}

function allmessagesfilter() {
	if ( allmessages_timeout )
		window.clearTimeout( allmessages_timeout );

	if ( !allmessages_running )
		allmessages_timeout = window.setTimeout( 'allmessagesfilter_do();', 500 );
}

function allmessagesfilter_do() {
	if ( !allmessages_nodelist )
		return;

	var text = document.getElementById('allmessagesinput').value;
	var nodef = allmessages_modified;

	allmessages_running = true;

	for ( var name in allmessages_nodelist ) {
		var nodes = allmessages_nodelist[name];
		var display = ( name.indexOf( text ) == -1 ? 'none' : '' );

		for ( var i = 0; i < nodes.length; i++)
			nodes[i].style.display =
				( nodes[i].className == "def" && nodef
				  ? 'none' : display );
	}

	if ( text != document.getElementById('allmessagesinput').value ||
	     nodef != allmessages_modified )
		allmessagesfilter_do();  // repeat

	allmessages_running = false;
}

function allmessagesfilter_init() {
	if ( allmessages_nodelist )
		return;

	var nodelist = new Array();
	var templist = new Array();

	var table = document.getElementById('allmessagestable');
	if ( !table ) return;

	var rows = document.getElementsByTagName('tr');
	for ( var i = 0; i < rows.length; i++ ) {
		var id = rows[i].getAttribute('id')
		if ( id && id.substring(0,16) != 'sp-allmessages-r' ) continue;
		templist[ id ] = rows[i];
	}

	var spans = table.getElementsByTagName('span');
	for ( var i = 0; i < spans.length; i++ ) {
		var id = spans[i].getAttribute('id')
		if ( id && id.substring(0,17) != 'sp-allmessages-i-' ) continue;
		if ( !spans[i].firstChild || spans[i].firstChild.nodeType != 3 ) continue;

		var nodes = new Array();
		var row1 = templist[ id.replace('i', 'r1') ];
		var row2 = templist[ id.replace('i', 'r2') ];

		if ( row1 ) nodes[nodes.length] = row1;
		if ( row2 ) nodes[nodes.length] = row2;
		nodelist[ spans[i].firstChild.nodeValue ] = nodes;
	}

	var k = document.getElementById('allmessagesfilter');
	if (k) { k.style.display = ''; }

	allmessages_nodelist = nodelist;
}

hookEvent( "load", allmessagesfilter_init );

/*
	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(/,/, ""));
	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;

	histrowinit();
	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);