var txt = "zu Favoriten hinzufügen"
var url = "http://www.singersconnection.de"
var who = "www.singersconnection.de"
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('');
}