function addFavorito(url,title) {
        if (window.sidebar) {
            // Mozilla Firefox Bookmark
            window.sidebar.addPanel(title, url,"");
        } else if( window.external ) {
            // IE Favorite
            window.external.AddFavorite( url, title);
        }
        else if(window.opera && window.print) {
            // Opera Hotlist
            return true; }
    }