function lesezeichen(){ 
  if (window.sidebar) { 
  // firefox 
    window.sidebar.addPanel(document.title,document.location.href, ""); 
  } 
/*    else if(window.opera && window.print) { 
  // opera  geht nicht
    var elem = document.createElement('a'); 
    elem.setAttribute('href',document.location.href); 
    elem.setAttribute('title',document.title); 
    elem.setAttribute('rel','sidebar'); 
    elem.click(); 
  } 
*/
  else if(document.all) 
  { 
    // ie 
    window.external.AddFavorite(document.location.href,document.title); 
  } 
}