/*
	Developed by Robert Nyman, http://www.robertnyman.com
	Code/licensing: http://code.google.com/p/getelementsbyclassname/
*/	
var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};

// Trefnet code
var marquee = {
	list : null,
	
	defaultInterval : 10,
	
	start : function ()
	{
		window.old_onload = window.onload;
		window.onload = function ()
		{
			marquee.init();
			if(window.old_onload) window.old_onload();
		}
	},
	
	init : function ()
	{
		marquee.list = marquee.getMarquees();

		for(var i = 0; i < marquee.list.length; i++)
		{
			marquee.setupMarquee(marquee.list[i]);
		}
		
		setInterval("marquee.scrollMarquees()", marquee.defaultInterval);
	},
	
	getMarquees : function (el)
	{
		if(document.getElementsByClassName) return document.getElementsByClassName('marquee');

		if(!document.getElementsByClassName) return getElementsByClassName('marquee');
		
		var result = new Array();

		if(!el) el = document;

		if(el.className && el.className.search(/\s?marquee\s?/) > -1)
		{
			result.push(el);
		}

		if(el.childNodes) for(var i = 0; i < el.childNodes.length; i++)
		{
			result = result.concat(marquee.getMarquees(el.childNodes.item(i)));
		}
		
		return result;
	},
	
	setupMarquee : function (el)
	{
		var position = marquee.getStyle(el, 'position');
		if(!position) return false;
		
		if(position == 'static') el.style.position = 'relative';
		el.style.overflow = 'hidden';
		
		// IE 6 fix
		if(marquee.getStyle(el, 'width') == 'auto') el.style.width = '100%';
		
		el.innerHTML = '<span>' + el.innerHTML + '</span>&nbsp;';
		
		el.firstChild.style.whiteSpace = 'nowrap';
		el.firstChild.style.position = 'absolute';
		el.firstChild.style.top = '0px';
		el.firstChild.style.left = el.offsetWidth + 'px';
		
		return true;
	},
	
	scrollMarquees : function ()
	{
		for(var i = 0; i < marquee.list.length; i++)
		{
			var left = parseInt(marquee.list[i].firstChild.style.left);
			
			marquee.list[i].firstChild.style.left = (left - 1) + 'px';
			
			if(left + marquee.list[i].firstChild.offsetWidth < 0) marquee.list[i].firstChild.style.left = marquee.list[i].offsetWidth + 'px';
		}
	},
	
	getStyle : function (el, styleProp)
	{
		if(el.currentStyle) return el.currentStyle[styleProp];
		
		if(window.getComputedStyle) return document.defaultView.getComputedStyle(el, null).getPropertyValue(styleProp);
	
		return null;
	}
};
marquee.start();