function anzeigen(layeron,layerout) {

  if (document.layers)  {
    nsEbene = 1; ieEbene = 0;
  } else {
    nsEbene = 0; ieEbene = 1;
  }

  if (nsEbene) {
    document.layers[layeron].visibility = "show";
    document.layers[layerout].visibility = "hide";
  } else {
    //document.all[layeron].style.visibility = "visible"
    //document.all[layerout].style.visibility = "hidden"
    document.getElementById(layeron).style.visibility = "visible"
    document.getElementById(layerout).style.visibility = "hidden"
  }
}