startList = function() 
{  
	if (document.all&&document.getElementById) 
	{  
		navRoot = document.getElementById("nav");  
		for (i=0; i<navRoot.childNodes.length; i++) 
		{  
			node = navRoot.childNodes[i];  
			if (node.nodeName=="LI") 
			{  
				node.onmouseover=function() 
				{  
					this.className+=" over";  
				}  
				
				node.onmouseout=function() 
				{  
					this.className=this.className.replace(" over", "");  
				}  
			}  
		}  
	}  
}  
window.onload=startList;