function menushow(me) {
  var submenu = me.getElementsByTagName('UL');
  var items = submenu[0].getElementsByTagName('LI');
  if (items.length > 0) submenu[0].style.visibility = 'visible';
}

function expandmenu(me) {
  var submenu = me.getElementsByTagName('UL');
  submenu[0].style.visibility = 'hidden';
}

function hideElement(element) {
  if (!element.style) element = document.getElementById(element);
  if (element.style) element.style.visibility = 'hidden';
}