function menushow(element) {
  ulelement = element.lastChild;
  if (ulelement.tagName == 'UL') {
    act = ulelement;
  }
  else {
    act = false;
  }
    if (act) {
    act.style.display='block';
  }
}

function menuhide(element) {
  ulelement = element.lastChild;
  if (ulelement) {
    if (ulelement.tagName == 'UL') {
      act = ulelement;
    }
    else {
      act = false;
    }
    if (act) {
      act.style.display='none';
    }
  }
}