js 显示农历

[javascript]代码库
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>js 显示农历</title>
<style type="text/css">
#pDate {
    text-align: center;
}
</style>
</head>
<body>
<p id="pDate"></p>
</body>
</html>
<script type="text/javascript">
    var sWeek = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");
    var dNow = new Date();
    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;
    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);
    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.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 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();
        }
    }
    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);
    function getFullYear(d) {// 修正firefox下year错误
        yr = d.getYear();
        if (yr < 1000)
            yr += 1900;
        return yr;
    }
    function showDate() {
        var sValue = getFullYear(dNow) + "年" + (dNow.getMonth() + 1) + "月"
                + dNow.getDate() + "日" + " " + sWeek[dNow.getDay()] + " ";
        sValue += GetLunarDay(yy, mm, dd);
        document.getElementById("pDate").innerHTML = sValue;
    };
    window.onload = showDate;
</script>
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