var txt = "Zu Favoriten hinzufügen"
var url = "http://www.heiland.ch"
var who = "Heiland Schweiz AG, Fachversand für Aerztebedarf"
var ver = navigator.appName
var num = parseInt(navigator.appVersion)
if ((ver == "Microsoft Internet Explorer")&&(num >= 4)) {
   document.write('<a href="javascript:window.external.AddFavorite(url,who);"');
   document.write('>'+ txt + '</a>')
}else{
   document.write('Heiland Schweiz AG...');
}