// JavaScript Document
      showMenu = function() {
        var subMenuItems = document.getElementById("topMenu").getElementsByTagName("li");
       for (var i=0; i<subMenuItems.length; i++) {
        subMenuItems[i].onmouseover=function() {
       this.className+=" showMenu";
        }
       subMenuItems[i].onmouseout=function() {
        this.className=this.className.replace(new RegExp(" showMenu\\b"), "");
        }
      }
      }
        
       if (window.attachEvent) window.attachEvent("onload", showMenu);