input 테그안의 숫자 3자리 마다 콤마 찍기

var rgx1 = /\D/g;  // /[^0-9]/g 와 같은 표현

var rgx2 = /(\d+)(\d{3})/;

function getNumber(obj){

  

     var num01;

     var num02;

  

function setComma(inNum){

      

     var outNum;

     while (rgx2.test(outNum)) {

          outNum = outNum.replace(rgx2, '$1' + ',' + '$2');

     return outNum;

<table width="650" border="0" cellspacing="1" cellpadding="5">

  <td width="109" bgcolor="#F2F2F2"><strong>희망급여</strong></td>

    <td width="518" align="left" bgcolor="#FFFFFF">

      <input name="mypay" type="text" onchange="getNumber(this);" onkeyup="getNumber(this);" style="text-align:right;">