if (document.all && window.external) // MSIE
  document.write('<a href="javascript:window.external.AddFavorite(location.href, document.title);">Als Favorit</a> &nbsp; | &nbsp;');
else if (window.sidebar) // Mozilla Firefor
  document.write('<a href="javascript:window.sidebar.addPanel(document.title, location.href, \'\');">Als Favorit</a> &nbsp; | &nbsp;');