$.fn.extend({
    TrunAd2: function (options) {
        var auto = null;
        var obj = $(this);
        count = $("a", obj).size();
        n = 0;
        var settings = { timer: 5000, menu: "#newplay_text" };
        options = options || {};
        $.extend(settings, options);
        var ulcontent = "<ul>";
        for (i = 1; i <= count; i++) { ulcontent = ulcontent + "<li>" + i + "</li>"; }
        ulcontent = ulcontent + "</ul>";
        $(settings.menu).html(ulcontent);
        $("a:not(:first-child)", this).hide();
        $(settings.menu + " li").eq(0).addClass('m');
        $(settings.menu + " li").mouseover(function () {
            clearInterval(auto);
            i = $(this).text() - 1;
            n = i;
            if (n >= count) return;
            $("a", obj).filter(":visible").fadeOut(200, function () { $(this).parent().children().eq(n).fadeIn(300); });
            $(this).addClass('m').siblings().removeClass('m');
        });
        $(settings.menu + " li").mouseout(function () {
            clearInterval(auto);
            auto = setInterval(showAuto, settings.timer);
        });

        auto = setInterval(showAuto, settings.timer);
        obj.hover(function () { clearInterval(auto) }, function () { auto = setInterval(showAuto, settings.timer); });

        function showAuto() {
            n = n >= (count - 1) ? 0 : ++n;
            $(settings.menu + " li").eq(n).trigger('mouseover');
            $(settings.menu + " li").eq(n).trigger('mouseout');
        }
    }
});