function bookmarkpage() {
     var url = document.location.href;
     var title = document.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");
     }
     return false;
}