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