金额大小写转换

function ToTrans(a) {
    var b = 9.999999999999E10,
    f = "\u96f6",
    h = "\u58f9",
    g = "\u8d30",
    e = "\u53c1",
    k = "\u8086",
    p = "\u4f0d",
    q = "\u9646",
    r = "\u67d2",
    s = "\u634c",
    t = "\u7396",
    l = "\u62fe",
    d = "\u4f70",
    i = "\u4edf",
    m = "\u4e07",
    j = "\u4ebf",
    u = "人民币",
    o = "\u5143",
    c = "\u89d2",
    n = "\u5206",
    v = "\u6574";
    a = a.toString();
    if (a == "") {
    	Dialog.alert("转换内容不能为空!");
        return ""
    }
    if (a.match(/[^,.\d]/) != null) {
    	Dialog.alert("输入有误,请输入小数点和纯数字!");
        return ""
    }
    if (a.match(/^((\d{1,3}(,\d{3})*(.((\d{3},)*\d{1,3}))?)|(\d+(.\d+)?))$/) == null) {
    	Dialog.alert("输入有误,请输入小数点和纯数字!");
        return ""
    }
    a = a.replace(/,/g, "");
    a = a.replace(/^0+/, "");
    if (Number(a) > b) {
    	Dialog.alert("\u5bf9\u4e0d\u8d77,\u4f60\u8f93\u5165\u7684\u6570\u5b57\u592a\u5927\u4e86!\u6700\u5927\u6570\u5b57\u4e3a99999999999.99\uff01");
        return ""
    }
    b = a.split(".");
    if (b.length > 1) {
        a = b[0];
        b = b[1];
        b = b.substr(0, 2)
    } else {
        a = b[0];
        b = ""
    }
    h = new Array(f, h, g, e, k, p, q, r, s, t);
    l = new Array("", l, d, i);
    m = new Array("", m, j);
    n = new Array(c, n);
    c = "";
    if (Number(a) > 0) {
        for (d = j = 0; d < a.length; d++) {
            e = a.length - d - 1;
            i = a.substr(d, 1);
            g = e / 4;
            e = e % 4;
            if (i == "0") j++;
            else {
                if (j > 0) c += h[0];
                j = 0;
                c += h[Number(i)] + l[e]
            }
            if (e == 0 && j < 4) c += m[g]
        }
        c += o
    }
    if (b != "") for (d = 0; d < b.length; d++) {
        i = b.substr(d, 1);
        if (i != "0") c += h[Number(i)] + n[d]
    }
    if (c == "") c = f + o;
    if (b.length < 2) c += v;
    return c;
}