function bookmarksite()
{
  if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) {
	var url = self.location;
	var title = document.title;
  window.external.AddFavorite(url,title);
  } else if (navigator.appName == "Netscape") {
     alert('Dear Firefox user, please press CTRL+D to bookmark this page!');
  } else {
    alert("Press CTRL-D (Netscape) or CTRL-T (Opera) to bookmark this page!");
  }
}