function addFaMraveniste() {
        var title = "Mraveniště.cz";
        var url = "http://www.mraveniste.cz";

        if (window.sidebar) {
            window.sidebar.addPanel(title, url,'');
        } else if(window.external) {
            window.external.AddFavorite(url, title);
        } else if(window.opera && window.print) {
            return true;
        }
    }