function hauptmenushow(element) {
  

  ulelement = element.lastChild;
  if (ulelement.tagName == 'UL') {
    act = ulelement;
  }
  else {
    act = false;
  }
    if (act) {
    act.style.display='block';
    document.getElementById('menu').style.height = (ulelement.offsetHeight + 55) + 'px';
    
  }
	
}

function hauptmenuhide(element) {
  ulelement = element.lastChild;
  if (ulelement) {
    if (ulelement.tagName == 'UL') {
      act = ulelement;
    }
    else {
      act = false;
    }
    if (act) {
      act.style.display='none';
      document.getElementById('menu').style.height = 'auto';
    }
  }
}