function mvBackgroundImage(imgId, backId)
{
	var l = document.getElementById(imgId);
	if(l)
	{
		var b = document.getElementById(backId);
		if(b)
		{
			var miny = 10;
			var maxy = b.offsetHeight - l.offsetHeight - 10;
			var t = Math.round(miny + (Math.random() * maxy));
			l.style.top = t+"px";
		}
	}
}

function setTopNavWidth()
{
	try
	{
		var ele = document.getElementById("topNav");
		var node = ele.firstChild;
		while(node != null)
		{
			if(node.nodeName.toLowerCase() == "li")
			{
				var width = node.offsetWidth;
				node.style.width = width + "px";
			}
			node = node.nextSibling;
		}
		ele = document.getElementById("topNavSelected");
		if(ele)
			ele.className = "selected";
	}
	catch(e)
	{
	}
}