function add_bookmark(title, url)
{
    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);
    }
}