소숫점, 콤마(,)표기 원화

//0표시, 소수점 8자리까지만 표기(수수료 계산)
function fnAddZero2(str, types){
    var addZero = '',     str = currency(str),      tmp = str.split('.'),     len = 0;
    if(tmp.length < 2){
        str += '.';
        tmp = str.split('.');
    }
    if(!types) types = 'btc';
    len = 8;
    if(tmp[1].length > len) tmp[1] = tmp[1].substr(0, len);
    if(tmp[1].substr(tmp[1].length -1, 1) == '0') tmp[1] = tmp[1].substr(0, tmp[1].length - 1);
    if(len - tmp[1].length == 0) return tmp[0] + '.' + tmp[1];
    for(var i=len-tmp[1].length; i--;) addZero += '0';
    if(str == '0') return '0.' + addZero;
    else return tmp[0] + '.' + tmp[1] + addZero;
}

//콤마(,)표기 원화
function currency(val, cipher) {
    var number    = String(val).replace(/,/g, ""),      strSymbol  = '',     result    = '';
    if(number.indexOf('.') != -1) number = number.split('.')[0];
    if(Number(number) < 0) {
        strSymbol  = '-';
        number    = String(Math.abs(number));
    }
    cipher = (cipher) ? cipher : 3;
    var len       = number.length,      nIndex = len % cipher,       nMax   = len - cipher + 1;
    nIndex = (nIndex == 0) ? cipher : nIndex;
    if(len <= cipher || cipher < 1) return String(val).replace(/,/g, "");
    result = number.substring(0, nIndex);
    while (nIndex <= nMax) {
        result += ',' + number.substring(nIndex, nIndex + 3);
        nIndex += cipher;
    }
    if(String(val).indexOf('.') != -1) result += ('.' + String(val).split('.')[1]);
    return strSymbol + result;
}