function BrowserCheck () {
if (document.layers)  {
     NN = 1; IE = 0; 
} else {
     NN = 0; IE = 1;
     };
}


function zeigen (Text) {
BrowserCheck ();
if (IE) document.all[''+Text].style.visibility = "visible"; 
if (NN) document.layers[''+Text].visibility = "show"; }
function weg (Text) {
BrowserCheck ();
if (IE) document.all[''+Text].style.visibility = "hidden"; 
if (NN) document.layers[''+Text].visibility = "hide"; }

function Start () {
zeigen ('Text1');
setTimeout ("weg ('Text1');", 10000);}