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


var box = "box";
function zeige(nr){
    zeigen(eval('"' + box + nr +'"'));
    }

function verberge(nr){
    verbergen(eval('"' + box + nr +'"'));
    }

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

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