function doResize() {
	
		if( document.getElementById("menus") != null ){
			var maxHeight = 0;
			var children = document.getElementById("menus").childNodes;
			var menus;
		
			for (var i = 0; i < children.length; i++) {
	   			if (children[i].nodeName == "UL") {
	   				menus = children[i].getElementsByTagName("UL");
	   				if (menus != null) {
	   					if (menus.length > 0) {
		   					menus[0].style.height = "100%";
		   					if (menus[0].offsetHeight > maxHeight) maxHeight = menus[0].offsetHeight;
		   				}
	   				}
	   			}
	   		}
   		
			for (var i = 0; i < children.length; i++) {
	   			if (children[i].nodeName == "UL") {
	   				menus = children[i].getElementsByTagName("UL");
	   				if (menus != null) {
	   					if (menus.length > 0) {
		   					menus[0].style.height = maxHeight + "px";
		   				}
	   				}
	   			}
	   		}
		}
	}

	window.onload = doResize;
	window.onresize = doResize;