ns = (document.layers) ? 1 : 0;
  ie = (document.all) ? 1 : 0;

  obj = (ns) ? "document.layers" : "document.all"; 
  eig = (ns) ? "" : ".style";

 function show(){
				var args=show.arguments;
				for(var i=0;i<args.length;i++){
								var ebene = args[i];
        E = eval(obj+'[\"'+ebene+'\"]'+eig);
        E.visibility = "visible";
    }
 }
 function hide(){
				var args=hide.arguments;
				for(var i=0;i<args.length;i++){
								var ebene = args[i];
        E = eval(obj+'[\"'+ebene+'\"]'+eig);
        E.visibility = "hidden";
    }
 }
function fensterErzeugen(url) {
  neu = open(url, "navigation", "width=600,height=530");
}
function ejaFensterErzeugen(url) {
  neu = open(url, "navigation", "width=357,height=346");
}