startList = function() {
	if (document.all && document.getElementById) {
		var navRoot = document.getElementById("nav");
		for (i=0; i < navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function(){showHideMenu(this.childNodes,"block");}
				node.onmouseout=function(){showHideMenu(this.childNodes,"none");}
			}
		}
				
		showHideMenu = function(nodeChildren,displayStyle) {
			for (j=0; j<nodeChildren.length; j++){
				if (nodeChildren[j].nodeName == "UL") {
					nodeChildren[j].style.display = displayStyle;
				}
			}

		}
	}
}
window.onload=startList;