activateMenu = function(menuH2) {
   if (document.all && document.getElementById(menuH2).currentStyle) {  
      var navroot = document.getElementById(menuH2);
      var lis=navroot.getElementsByTagName("LI");  
      for (i=0; i<lis.length; i++) {
         if(lis[i].lastChild.tagName=="UL"){
            lis[i].onmouseover=function() {		
               this.lastChild.style.display="block";
            }
            lis[i].onmouseout=function() {                       
               this.lastChild.style.display="none";
            }
         }
      }
   }
}