function bookmarkPage(u,t) {
    var bm_url = u;
    var bm_text = "Wissensnetzwerk zur Prüfung und Sanierung von Entwässerungssystemen - "+t;
    if (window.sidebar) { // Firefox
        window.sidebar.addPanel(bm_text, bm_url, "()");
    } else if (window.external) { // IE
        window.external.AddFavorite(bm_url, bm_text);
    } else if (window.opera && window.print) { //Opera
        // currently not supported
    }
}