function replaceEle(){
  if(document.getElementById){
    var obj = document.getElementById("menu_container");
    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 ){
  var menu = obj.getElementsByTagName("ul").item(0);
  if(menu){
    menu.style.display = "block";
  }
}
	
function hiddenMenu( obj ){
  var menu = obj.getElementsByTagName("ul").item(0);
  if(menu){
    menu.style.display = "none";
  }


}