// 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);