//Browser Kontrolle, zugelassen: mindestens IE 5, Netscape 6, Opera 5

var brver="0";
if (navigator.appName=="Microsoft Internet Explorer") {
  brver=navigator.appVersion.substring(22,23);
}
else {
  brver=navigator.appVersion.substring(0,1);
}
var ibrver=parseInt(brver);
if (ibrver<5) {
  document.writeln("<hr><center>"+
                   "<h3><font color=#ee7000>Please use at least"+
                   "  MS Internet Explorer 5, Netscape 6, Mozilla 0.6 or Opera 5 for this Web site."+
                   "</font></h3></center><hr>");
  //stop();
}