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

var j = 1;
var y = "hilfe";

function zeigeHilfeNr(ebene_nr) {
    verbergen(eval('"' + y + j +'"'));
    zeigen(eval('"' + y + ebene_nr +'"'));
    j = ebene_nr;
}

function ausblendenHilfeNr(ebene_nr) {
    verbergen(eval('"' + y + j +'"'));
    j = 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"
    }
}