/**
 *	Pseudos - V1.30.050121 - hover & active
 *	---------------------------------------------
 *	Peterned - http://www.xs4all.nl/~peterned/
 *	(c) 2005 - Peter Nederlof
 *
 *	Credits  - Arnoud Berendsen
 *	         - Martin Reurings
 *           - Robert Hanson
 *
 *	howto: body { behavior:url("csshover.htc"); }
 *	---------------------------------------------
 */

var currentSheet, doc = window.document, activators = {
	onhover:{on:'onmouseover', off:'onmouseout'},
	onactive:{on:'onmousedown', off:'onmouseup'}
}

function parseStylesheets()
{
	var sheets = doc.styleSheets, l = sheets.length;
	for(var i=0; i<l; i++)
		parseStylesheet(sheets[i]);
}
function parseStylesheet(sheet)
{
	if(sheet.imports)
	{
		try
		{
			var imports = sheet.imports, l = imports.length;
			for(var i=0; i<l; i++) parseStylesheet(sheet.imports[i]);
		} catch(securityException){}
	}
	try
	{
		var rules = (currentSheet = sheet).rules, l = rules.length;
		for(var j=0; j<l; j++) parseCSSRule(rules[j]);
	} catch(securityException){}
}

function parseCSSRule(rule)
{
	var select = rule.selectorText, style = rule.style.cssText;
	if(!(/(^|\s)(([^a]([^ ]+)?)|(a([^#.][^ ]+)+)):(hover|active)/i).test(select) || !style) return;

	var pseudo = select.replace(/[^:]+:([a-z-]+).*/i, 'on$1');
	var newSelect = select.replace(/(\.([a-z0-9_-]+):[a-z]+)|(:[a-z]+)/gi, '.$2' + pseudo);
	var className = (/\.([a-z0-9_-]*on(hover|active))/i).exec(newSelect)[1];
	var affected = select.replace(/:hover.*$/, '');
	var elements = getElementsBySelect(affected);

	currentSheet.addRule(newSelect, style);
	for(var i=0; i<elements.length; i++)
		new HoverElement(elements[i], className, activators[pseudo]);
}

function HoverElement(node, className, events)
{
	if(!node.hovers) node.hovers = {};
	if(node.hovers[className]) return;
	node.hovers[className] = true;
	node.attachEvent(events.on,
		function() { node.className += ' ' + className; });
	node.attachEvent(events.off,
		function() { node.className =
			node.className.replace(new RegExp('\\s+'+className, 'g'),''); });
}

function getElementsBySelect(rule)
{
	var parts, nodes = [doc];
	parts = rule.trim().split(' ');
	if((/^html$/i).test(parts[0]))
	{
		parts.shift();
	}
	for(var i=0; i<parts.length; i++)
	{
		nodes = getSelectedNodes(parts[i], nodes);
	}	return nodes;
}

function getSelectedNodes(select, elements)
{
	var result, node, nodes = [];
	var classname = (/\.([a-z0-9_-]+)/i).exec(select);
	var identify = (/\#([a-z0-9_-]+)/i).exec(select);
	var tagName = select.replace(/(\.|\#|\:)[a-z0-9_-]+/i, '');
	for(var i=0; i<elements.length; i++)
	{
		result = tagName? elements[i].all.tags(tagName):elements[i].all;
		for(var j=0; j<result.length; j++)
		{
			node = result[j];
			if((identify && node.id != identify[1]) || (classname && !(new RegExp('\\b' +
				classname[1] + '\\b').exec(node.className)))) continue;
			nodes[nodes.length] = node;
		}
	}	return nodes;
}
if (document.all)
{
	window.attachEvent('onload', parseStylesheets);
}