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

var iEbene = 1;
var xEbene = "beschr";

function zeigeEbeneNr(ebene_nr){
    verbergenEbene(eval('"' + xEbene + iEbene +'"'));
    zeigenEbene(eval('"' + xEbene + ebene_nr +'"'));
    iEbene = ebene_nr;
}

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

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