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

var i = 1;

var ebene = "ebene";

function zeigeEbeneNr(ebene_nr){

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


function zeigen(name) {

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


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


// -->