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");
    }
}