function replaceEle(){
	if(document.getElementById){
		var obj = document.getElementById("menu");
		obj.innerHTML = obj.innerHTML.replace(/<dt>/gi, '<dt onmouseover="popupMenu(this);" onmouseout="hiddenMenu(this);">');
		obj.innerHTML = obj.innerHTML.replace(/<li>/gi, '<li onmouseover="popupMenu(this);" onmouseout="hiddenMenu(this);">');
	}
}

function popupMenu(obj, num){
		obj.style.backgroundColor = "#f3dddd";
	var menu = obj.getElementsByTagName("ul").item(0);
	if(menu){
		menu.style.display = "block";
	}

	if(obj.tagName.match(/li/i)){
		obj.style.backgroundImage = "url(img/pr_sub_menu_on.gif)";
	}
}

function hiddenMenu(obj, num){

		obj.style.backgroundColor = "#fff";

	var menu = obj.getElementsByTagName("ul").item(0);
	if(menu){
		menu.style.display = "none";
	}

	if(obj.tagName.match(/li/i)){
		obj.style.backgroundImage = "url(img/pr_sub_menu.gif)";
	}
}