function hideLayer(layer){
  var h = new createLayerObject(layer);
  h.hide();
}

function showLayer(layer){
  var s = new createLayerObject(layer);
  s.show();
}

function hideLayers(){
  for (var i=0; i<hideLayers.arguments.length; i++) {
    var h = new createLayerObject(hideLayers.arguments[i]);
    h.hide();
  }
}

function showLayers(){
  for (var i=0; i<showLayers.arguments.length; i++) {
    var s = new createLayerObject(showLayers.arguments[i]);
    s.show();
  }
}

function toggleMenu(hover,nr,hovertitle){
  if (hovertitle == 1) {
    if (hover == 1) {
      hideLayer('tp'+nr);
      hideLayer('tt'+nr);
      showLayer('hp'+nr);
      showLayer('ht'+nr);
    }
    else {
      hideLayer('hp'+nr);
      hideLayer('ht'+nr);
      showLayer('tp'+nr);
      showLayer('tt'+nr);
    }
  }
  else {
    if (hover == 1) {
      hideLayer('tp'+nr);
      showLayer('hp'+nr);
    }
    else {
      hideLayer('hp'+nr);
      showLayer('tp'+nr);
    }
  }
}

//function showMenu(){
//  document.write('<a href="a/a1_1.php" onclick="displayMenu();return false;">[&nbsp;Inhalt&nbsp;]</a>');
//}