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