var ie = (document.all)?1:0; // IE4 var ns4 = (document.layers)?1:0; // Netscape 4 var ie5 =(document.getElementById)?1:0; // DOM3 = IE5+, NS6 function hide_show() { if (ns4) { if (document.myLayer.visibility == 'show') document.myLayer.visibility = 'hide'; else document.myLayer.visibility = 'show'; } else if (ie) { if (document.all.myLayer.style.visibility == 'visible') document.all.myLayer.style.visibility = 'hidden'; else document.all.myLayer.style.visibility = 'visible'; } else if (ie5) { if (document.getElementById('myLayer').style.visibility == 'visible') document.getElementById('myLayer').style.visibility = 'hidden'; else document.getElementById('myLayer').style.visibility = 'visible'; } } function unsichtbar() { myLayer.style.visibility='hidden'; // } function aus() { setTimeout('unsichtbar()',5000); // Zeit in ms }