function togglevisible(id) {
    var obj=document.getElementById(id);
    if(obj.style.display=='block') obj.style.display='none';
    else                           obj.style.display='block';
  }

  function menu_full_visible() {
    var id=1;
    while(id<30) {
      var obj=document.getElementById("menuleftid"+id); if(obj) obj.style.display='block';
      id=id+1;
    }
  }