var CalendarData = new Array(100);
var madd = new Array(12);
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 cYear, cMonth, cDay, TheDate;
function init() {
    CalendarData = new Array(
                  0xA4B, 0x5164B, 0x6A5, 0x6D4, 0x415B5, 0x2B6, 0x957, 0x2092F, 0x497, 0x60C96,    // 1921-1930
                  0xD4A, 0xEA5, 0x50DA9, 0x5AD, 0x2B6, 0x3126E, 0x92E, 0x7192D, 0xC95, 0xD4A,     // 1931-1940
                  0x61B4A, 0xB55, 0x56A, 0x4155B, 0x25D, 0x92D, 0x2192B, 0xA95, 0x71695, 0x6CA,   // 1941-1950
                  0xB55, 0x50AB5, 0x4DA, 0xA5B, 0x30A57, 0x52B, 0x8152A, 0xE95, 0x6AA, 0x615AA,    // 1951-1960
                  0xAB5, 0x4B6, 0x414AE, 0xA57, 0x526, 0x31D26, 0xD95, 0x70B55, 0x56A, 0x96D,      // 1961-1970
                  0x5095D, 0x4AD, 0xA4D, 0x41A4D, 0xD25, 0x81AA5, 0xB54, 0xB6A, 0x612DA, 0x95B,   // 1971-1980
                  0x49B, 0x41497, 0xA4B, 0xA164B, 0x6A5, 0x6D4, 0x615B4, 0xAB6, 0x957, 0x5092F,   // 1981-1990
                  0x497, 0x64B, 0x30D4A, 0xEA5, 0x80D65, 0x5AC, 0xAB6, 0x5126D, 0x92E, 0xC96,     // 1991-2000
                  0x41A95, 0xD4A, 0xDA5, 0x20B55, 0x56A, 0x7155B, 0x25D, 0x92D, 0x5192B, 0xA95,    // 2001-2010
                  0xB4A, 0x416AA, 0xAD5, 0x90AB5, 0x4BA, 0xA5B, 0x60A57, 0x52B, 0xA93, 0x40E95);  // 2011-2020
    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;
}

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

function e2c() {

    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.getYear();
    if (tmp < 1900) { tmp += 1900; }
    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 tmp = "";
    tmp += tgString.charAt((cYear - 4) % 10);   //年干
    tmp += dzString.charAt((cYear - 4) % 12);   //年支
    tmp += "(";
    tmp += sx.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")); /*卅*/
    if (cDay % 10 != 0 || cDay == 10) { tmp += numString.charAt((cDay - 1) % 10); }
    return tmp;
}

init();
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();
    }
}
var now = new Date();
$("nongli").innerHTML = GetLunarDay(now.getYear(), now.getMonth()+1, now.getDate());