function mmenu(mID) {
  var menu = document.getElementById(mID);
  var display = menu.style.display;
  menu.style.display = (display == "block") ? "none" : "block";
  menu.parentNode.style.listStyleImage = (display == "block") ? "url(cartellachiusa.gif)" : "url(cartellaaperta.gif)";
}
window.onload = function() {
  var uls = document.getElementsByTagName("ul");
  for (i=0;i<uls.length;i++) {
if(uls[i].getAttribute("class")=="submenu")uls[i].style.display = "none";
if(uls[i].getAttribute("id") && uls[i].getAttribute("id").search("submenu-")!= -1) uls[i].style.display = "none";
}
}