function dodaj() {
  var tytul = 'PASAMON - Poland - Bydgoszcz';
  var url = 'http://www.pasamon.com.pl/en/';
  if (window.sidebar) { window.sidebar.addPanel(tytul, url, ""); } // FF 
  else if (window.external) { window.external.AddFavorite(url, tytul); } // IE
  else if (window.opera && window.print) {
     var a = document.createElement('a');
     a.setAttribute('href', url);
     a.setAttribute('title', tytul);
     a.setAttribute('rel','sidebar');
     a.click();
  }
}
 
if (window.external || window.sidebar || (window.opera  && window.print) ) {
  document.writeln('<a class="pasgora" href="javascript:dodaj()" title="Add to favorite">Add to favorite</a>');
}