function bookmark_site(address,sitename)
{
  if (window.sidebar)
  {
    window.sidebar.addPanel(sitename, address,"");
  }
  else if (document.all)
  {
    window.external.AddFavorite(address, sitename);
  }
  else if (window.opera && window.print)
  {
    var elem = document.createElement('a');
    elem.setAttribute('href',address);
    elem.setAttribute('title',sitename);
    elem.setAttribute('rel','sidebar');
    elem.click();
  }
}