function mmenu(mID) {
   var menu = document.getElementById(mID);
   var display = menu.style.display;
   menu.style.display = (display == "block") ? "none" : "block";
  }
  window.onload = function() {
   var uls = document.getElementsByTagName("ul");
   for (i=0;i<uls.length;i++) {
    if(uls[i].className=="submenu")uls[i].style.display = "none";
   }
  }