function initMenu() 
{
	navRoot = document.getElementById("nav");
	
	if(navRoot)
	{
		for (i=0; i<navRoot.childNodes.length; i++) 
		{
			node = navRoot.childNodes[i];
			
			if (node.nodeName=="LI") 
			{
				node.onmouseover = function() 
				{
					this.className+=" over";
					document.getElementById("menu").style.height = "600px";
				
				}
			
				node.onmouseout=function() 
				{
					this.className=this.className.replace(" over", "");
					document.getElementById("menu").style.height = "30px";
				}
			}
		}
	}
	
 	
}