function init() {
	var n = document.getElementById('nav');
	Element.cleanWhitespace(n);
	
	var w = Element.getWidth(n);
	
	var li = n.firstChild;	
	while(li)
	{		
		
		var sul = li.getElementsByTagName('ul');
		
		for(var i = sul.length; i-- > 0;)
		{
			sul[i].style.display = 'block';
			var sw = Element.getWidth(sul[i]);
			sul[i].style.display = '';
			
			if(document.all) sul[i].style.left = "-" + w/2 + "px";
		}
		
		if(document.all && li.tagName == "LI")
		{
			li.onmouseover = function() { Element.addClassName(this, 'hover'); };
			li.onmouseout = function() { Element.removeClassName(this, 'hover'); };
		}
		
		li = li.nextSibling;
	}
}
		
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			if (oldonload) {
				oldonload();
			}
			func();
		}
	}
}

addLoadEvent(init);


function replaceImage(src, dest)
{
	src = $(src);
	dest = $(dest);
	
	var tsrc = src.getAttribute('src');
	var tdest = dest.getAttribute('src');
	
	dest.setAttribute('src',tsrc);
	src.setAttribute('src',tdest);
}