function bookMark()
 {
   if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4))
{
   window.external.AddFavorite (window.location,document.title);
}
else 
{
   var msg = "Click OK, then Ctrl-D to Bookmark Us!";
   if(navigator.appName == "Netscape") msg  ;
   alert(msg);
}
}