function GetBit(m, n) {
    return (m >> n) & 1;
}

var cYear,cMonth,cDay,TheDate;

function e2c() {
    
    var CalendarData = new Array(100);
    var madd = new Array(12);
    madd[0] = 0;
    madd[1] = 31;
    madd[2] = 59;
    madd[3] = 90;
    madd[4] = 120;
    madd[5] = 151;
    madd[6] = 181;
    madd[7] = 212;
    madd[8] = 243;
    madd[9] = 273;
    madd[10] = 304;
    madd[11] = 334;
    CalendarData = new Array(0xA4B, 0x5164B, 0x6A5, 0x6D4, 0x415B5, 0x2B6, 0x957, 0x2092F, 0x497,
            0x60C96, 0xD4A, 0xEA5, 0x50DA9, 0x5AD, 0x2B6, 0x3126E, 0x92E, 0x7192D, 0xC95, 0xD4A,
            0x61B4A, 0xB55, 0x56A, 0x4155B, 0x25D, 0x92D, 0x2192B, 0xA95, 0x71695, 0x6CA, 0xB55,
            0x50AB5, 0x4DA, 0xA5B, 0x30A57, 0x52B, 0x8152A, 0xE95, 0x6AA, 0x615AA, 0xAB5, 0x4B6,
            0x414AE, 0xA57, 0x526, 0x31D26, 0xD95, 0x70B55, 0x56A, 0x96D, 0x5095D, 0x4AD, 0xA4D,
            0x41A4D, 0xD25, 0x81AA5, 0xB54, 0xB6A, 0x612DA, 0x95B, 0x49B, 0x41497, 0xA4B, 0xA164B,
            0x6A5, 0x6D4, 0x615B4, 0xAB6, 0x957, 0x5092F, 0x497, 0x64B, 0x30D4A, 0xEA5, 0x80D65, 0x5AC,
            0xAB6, 0x5126D, 0x92E, 0xC96, 0x41A95, 0xD4A, 0xDA5, 0x20B55, 0x56A, 0x7155B, 0x25D, 0x92D,
            0x5192B, 0xA95, 0xB4A, 0x416AA, 0xAD5, 0x90AB5, 0x4BA, 0xA5B, 0x60A57, 0x52B, 0xA93, 0x40E95);

    TheDate = (arguments.length != 3) ? new Date() : new Date(arguments[0], arguments[1], arguments[2]);
    var total,m,n,k;
    var isEnd = false;
    var tmp = TheDate.getFullYear();
    total = (tmp - 1921) * 365 + Math.floor((tmp - 1921) / 4) + madd[TheDate.getMonth()] + TheDate.getDate() - 38;
    if (TheDate.getYear() % 4 == 0 && TheDate.getMonth() > 1) {
        total++;
    }
    for (m = 0; ; m++) {
        k = (CalendarData[m] < 0xfff) ? 11 : 12;
        for (n = k; n >= 0; n--) {
            if (total <= 29 + GetBit(CalendarData[m], n)) {
                isEnd = true;
                break;
            }
            total = total - 29 - GetBit(CalendarData[m], n);
        }
        if (isEnd) break;
    }
    cYear = 1921 + m;
    cMonth = k - n + 1;
    cDay = total;
    if (k == 12) {
        if (cMonth == Math.floor(CalendarData[m] / 0x10000) + 1) {
            cMonth = 1 - cMonth;
        }
        if (cMonth > Math.floor(CalendarData[m] / 0x10000) + 1) {
            cMonth--;
        }
    }
}
function GetcDateString() {


    var tgString = "甲乙丙丁戊己庚辛壬癸";
    var dzString = "子丑寅卯辰巳午未申酉戌亥";
    var numString = "一二三四五六七八九十";
    var monString = "正二三四五六七八九十冬腊";
    var weekString = "日一二三四五六";
    var sx = "鼠牛虎兔龙蛇马羊猴鸡狗猪";


    var tmp = "";
    tmp += tgString.charAt((cYear - 4) % 10);
    tmp += dzString.charAt((cYear - 4) % 12);
    tmp += "年 ";
    if (cMonth < 1) {
        tmp += "(闰)";
        tmp += monString.charAt(-cMonth - 1);
    } else {
        tmp += monString.charAt(cMonth - 1);
    }
    tmp += "月";
    tmp += (cDay
            < 11) ? "初" : ((cDay < 20) ? "十" : ((cDay < 30) ? "廿" : "三十"));
    if (cDay % 10 != 0 || cDay == 10) {
        tmp += numString.charAt((cDay - 1) % 10);
    }
    return tmp;
}

function GetLunarDay(solarYear, solarMonth, solarDay) {
    if (solarYear < 1921 || solarYear > 2020) {
        return "";
    } else {
        solarMonth = (parseInt(solarMonth) > 0) ? (solarMonth - 1) : 11;
        e2c(solarYear, solarMonth, solarDay);
        return GetcDateString();
    }
}




function CAL() {
    var D = new Date();
    var yy = D.getFullYear();
    var mm = D.getMonth() + 1;
    var dd = D.getDate();
//var ww = D.getDay();
//var ss = parseInt(D.getTime() / 1000);

//   document.write("<table border = '0'cellspacing = '0'cellpadding = '0'");
//   document.write("<tr><td align='center'  class='b12'><span class='b12'>"+GetLunarDay(yy,mm,dd));
//   document.write("</span></td></tr></table>");
    document.write(GetLunarDay(yy,mm,dd));
}


function writeCalendar(){
    today = new Date();
    var day;
    var centry;
    if (today.getDay() == 0)     day = "星期日"
    if (today.getDay() == 1)     day = "星期一"
    if (today.getDay() == 2)     day = "星期二"
    if (today.getDay() == 3)     day = "星期三"
    if (today.getDay() == 4)     day = "星期四"
    if (today.getDay() == 5)     day = "星期五"
    if (today.getDay() == 6)     day = "星期六"
    centry = "";
    if (today.getFullYear() < 2000)  centry = "19";
    date1 = "今天是" + centry + (today.getFullYear()) + "年" + (today.getMonth() + 1 ) + "月" + today.getDate() + "日  ";
    date2 = "" + day;
    document.write(date1 + date2);
}