function bookmark()
{
  var url = 'http://www.sportmeetscharity.de';
  var titel = 'Sport meets Charity';
  var kommentar = '';
  
  if(window.sidebar) // Firefox
  {
    window.sidebar.addPanel(titel,url,kommentar);
  }
  else if(window.opera && window.print) // Opera
  {
    var elem = document.createElement('a');
    elem.setAttribute('href',url);
    elem.setAttribute('title',titel);
    elem.setAttribute('rel','sidebar');
    elem.click();
  }
  else if(document.all) // IE
  {
    window.external.AddFavorite(url,titel);
  }
}