var preOnload = window.onload;
window.onload = function() {
if(preOnload){ preOnload() }
	var pagePath = location.pathname.split("/");
	var targetId = (pagePath[1].length && pagePath[1] != "index.html") ? pagePath[1] : "top";
	var targetNode = document.getElementById(targetId);
	var newNode = document.createElement("IMG");
	var oldNode = targetNode.firstChild;
	newNode.setAttribute("src", "/common/images/menu/menu_"+targetId+"_over.gif");
	targetNode.replaceChild(newNode, oldNode);
}