function addToFavorites() {
    if (window.sidebar) {
        window.sidebar.addPanel(document.title, location.href, "");
    } else if (window.opera && window.print) {
        var elem = document.createElement('a');
        elem.setAttribute('href', location.href);
        elem.setAttribute('title', document.title);
        elem.setAttribute('rel', 'sidebar');
        elem.click();
    } else if (window.external) {
        window.external.AddFavorite(location.href,document.title)
    } else {
        alert("Sorry! Your browser doesn't support this function.");
    }
}