if (document.layers)  {
     ns = 1; ie = 0; 
} else {
     ns = 0; ie = 1;
     }

var i = 0;
var ebene = "Punkt";

function zeigePunktNr(ebene_nr){
    verbergen(eval('"' + ebene + i + '"'));
    zeigen(eval('"' + ebene + ebene_nr + '"'));
    i = ebene_nr;
    }

function zeigen(name) {
  if (document.layers) {
    document.layers[''+name].visibility = "show";
    }
  else if (document.all) {
    document.all[''+name].style.visibility = "visible";
    }
  else if (document.getElementById) {
    document.getElementById(''+name).style.visibility="visible";
    }
}

function verbergen(name) {
  if (document.layers) {
    document.layers[''+name].visibility = "hide";
    }
  else if (document.all) {
    document.all[''+name].style.visibility = "hidden";
    }
  else if (document.getElementById) {
    document.getElementById(''+name).style.visibility="hidden";
    }
}