function visitor() {
    var Jsay;
    var Jdayr;
    var Jtoday = new Date();
    var Jyear = Jtoday.getFullYear() ; Jmonth = Jtoday.getMonth();
    Jday = Jtoday.getDay(); Jdate = Jtoday.getDate();
    Jhrs = Jtoday.getHours(); Jmin = Jtoday.getMinutes();
    Jsec = Jtoday.getSeconds();
    document.write(Jyear + "年");
    document.write((Jmonth + 1));
    document.write("月" + Jdate + "日");
    if (Jday == 1)
        document.write("星期一");
    else if (Jday == 2)
        document.write("星期二");
    else if (Jday == 3)
        document.write("星期三");
    else if (Jday == 4)
        document.write("星期四");
    else if (Jday == 5)
        document.write("星期五");
    else if (Jday == 6)
        document.write("星期六");
    else if (Jday == 7)
        document.write("星期日");
}
visitor();