function bookmark(url,title){

  if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) {

  window.external.AddFavorite(url,title);

  } else if (navigator.appName == "Netscape") {

    window.sidebar.addPanel(title,url,"");

  } else {

    alert("Press CTRL-D (Netscape) or CTRL-T (Opera) to bookmark");

  }

}