function randomSubdomain() {
    var chars = "abcdefghijklmnopqrstuvwxyz0123456789";
    var result = "";
    for (var i = 0; i < 6; i++) {
        result += chars.charAt(Math.floor(Math.random() * chars.length));
    }
    return result;
}

function randomUrl(domain) {
    return "http://" + randomSubdomain() + "." + domain;
}

document.write("<ul>");
document.write('<li><a href="/" ><spanv>特色专区<spanv></a></li>');
document.write('<li><a href="' + randomUrl("73gan.click") + '">狗B电影</a></li>');
document.write('<li><a href="' + randomUrl("48ga.click") + '">逼逼AV</a></li>');
document.write('<li><a href="' + randomUrl("43gan.click") + '">狐狸论坛</a></li>');
document.write('<li><a href="' + randomUrl("wcd3.click") + '">小草论坛</a></li>');
document.write('<li><a href="' + randomUrl("30po.click") + '">男女论坛</a></li>');
document.write("</ul>");