// browserversion
var ie4 = (document.all)? true:false;
var ne6 = (document.getElementById)? true:false;
var ns4 = (document.layers)? true:false;

if (ne6){
	var layersFrame=top.frames["inhalt"].document.getElementsByTagName("div");
	var bilderFrame=top.frames["inhalt"].document.getElementsByTagName("img");
}
if (ie4){
 DefHeader   = ".document.all";
 DefSichtbar = ".style.visibility";
 DefZeigen   = "visible";
 DefUnzeigen = "hidden";
}
else {
 DefHeader   = "document.layers";
 DefSichtbar = ".visibility";
 DefZeigen   = "show";
 DefUnzeigen = "hide";
}


 // special script fuer bildwechsel
function showLayerBild(Layer){
	if (ne6){
		layersFrame["l1"].style.visibility="hidden";
		layersFrame[Layer].style.visibility="visible";
	}
	else {
		eval(top.frames["inhalt"].DefHeader+'["l1"]'+DefSichtbar+' = "'+DefUnzeigen+'"');
 		eval(top.frames["inhalt"].DefHeader+'["'+Layer+'"]'+DefSichtbar+' = "'+DefZeigen+'"');
 	}
}

function hideLayerBild(Layer){
	if (ne6){
		layersFrame[Layer].style.visibility="hidden";
		layersFrame["l1"].style.visibility="visible";
	}
	else {
		eval(top.frames["inhalt"].DefHeader+'["'+Layer+'"]'+DefSichtbar+' = "'+DefUnzeigen+'"');
 		eval(top.frames["inhalt"].DefHeader+'["l1"]'+DefSichtbar+' = "'+DefZeigen+'"');
 	}
}