var site = "http://www.geburtsanzeigen.net";
var description = "geburtsanzeigen.net";
var browser = navigator.appName;
var version = navigator.appVersion.substring(0,1);
var ie = ((browser == "Microsoft Internet Explorer") && (version >= 4));
var ns = ((browser=="Netscape") && (version >= 4 && version <= 5));


function bookmark() {
  if (ie) {
    window.external.AddFavorite(site,description);
  }
  else {
    alert("netscape : drücken sie strg + d, um geburtsanzeigen.net zu bookmarken");
  }
}