function detect()
{
  var browser  = navigator.appName;
  var start    = navigator.appVersion.indexOf("MSIE");
  var end      = navigator.appVersion.indexOf(".", start);
  var majorVer = parseInt(navigator.appVersion.substring(start + 5, end));
  
  var isIE     = (browser == "Microsoft Internet Explorer" && majorVer < 6) ? true : false;
  var isNS4    = (document.layers) ? true : false;  
	
  // Microsoft Internet Explorer < 6 oder Netscape Navigator 4.x
  if ((isIE || isNS4) && readCookie("nowarning") != 1)
  {
    document.location.href="hinweis.html";  
	}
}