가격선택을 통해서 선택한 값이 인풋트 창에 표기될때

콤마가 표기가 안됩니다.

1,000 처럼 되어야 하는데 --> 1000  처럼 콤마가 빠짐

<tr>
 <td width="60" height="20" align="right">보증금 :</td>
 <td align="left"> <input class='ed' type=text id=t_start name='t_start' size=8 maxlength=8 minlength=3 
  itemname='시작일' onKeyUp="number_format(this)" value='<?=$t_start?>'> 만원
   ~ <input class='ed' type=text id=t_end name='t_end' size=8 maxlength=8 minlength=3 
  itemname='마지막일' onKeyUp="number_format(this)" value='<?=$t_end?>'> 만원</td>

  <td><select name='price_junse' style='font-size:;'  onChange="check_selectbox('price_junse','t_start','t_end','','~')"><option value='' selected style='background-color:'>가격선택</option><option value='100~500'>100만원~500만원</option><option value='500~1,000'>500만원~1,000만원</option><option value='1,000~2,000'>1,00만원~2,000만원</option><option value='2,000~3,000'>2,000만원~3,000만원</option></select></td>
</tr>

<script>
 function check_selectbox( selName , inputName1 , inputName2, inputName3, gubun )
 {
  //alert('test');
  selIndex = document.getElementsByName(selName)[0].selectedIndex;
  //alert(document.getElementsByName(selName)[0].options[ selIndex ].value);

  if ( selIndex == 0 )
  {
   document.getElementsByName(inputName1)[0].readOnly = false;
   document.getElementsByName(inputName2)[0].readOnly = false;

   document.getElementsByName(inputName1)[0].value  = "";
   document.getElementsByName(inputName2)[0].value  = "";

   if ( inputName3 != '' )
   {
    document.getElementsByName(inputName3)[0].readOnly = false;
    document.getElementsByName(inputName3)[0].value  = "";
   }

   document.getElementsByName(inputName1)[0].focus();
  }
  else if(document.getElementsByName(selName)[0].options[ selIndex ].value == 'self input')
  {
   document.getElementsByName(inputName1)[0].readOnly = false;
   document.getElementsByName(inputName2)[0].readOnly = false;
  }
  else
  {
   var nowVal = document.getElementsByName(selName)[0].options[ selIndex ].value;
   var nowVals = nowVal.split(gubun);

   if ( nowVals[0] && nowVals[1])
   {
    document.getElementsByName(inputName1)[0].value  = nowVals[0].replace(/\D/g,'');
    document.getElementsByName(inputName2)[0].value  = nowVals[1].replace(/\D/g,'');

    document.getElementsByName(inputName1)[0].readOnly = true;
    document.getElementsByName(inputName2)[0].readOnly = true;

   } else if ( !nowVal[1] ) {

    document.getElementsByName(inputName1)[0].value  = nowVals[0].replace(/\D/g,'');
    document.getElementsByName(inputName2)[0].value  = "";

    document.getElementsByName(inputName1)[0].readOnly = false;
    document.getElementsByName(inputName2)[0].readOnly = false;
   }

   if ( inputName3 != '' )
   {

    document.getElementsByName(inputName3)[0].readOnly = true;
    document.getElementsByName(inputName3)[0].value  = nowVals[2].replace(/\D/g,'');
   }

  }
 }

 function start_selectbox( selName , inputName1 , inputName2, inputName3, gubun )
 {
  if ( !document.getElementsByName(selName)[0] )
  {
   return;
  }

  selIndex = document.getElementsByName(selName)[0].selectedIndex;

  if ( selIndex == 0 )
  {
   document.getElementsByName(inputName1)[0].readOnly = false;
   document.getElementsByName(inputName2)[0].readOnly = false;

   if ( inputName3 != '' )
    document.getElementsByName(inputName3)[0].readOnly = false;

   //document.getElementsByName(inputName1)[0].focus();
   // 페이지 이동시 커서가 인풋박스로 이동하여 상단이 안보이는 문제로 주석처리 there007
  }
  else
  {
   document.getElementsByName(inputName1)[0].readOnly = true;
   document.getElementsByName(inputName2)[0].readOnly = true;

   if ( inputName3 != '' )
    document.getElementsByName(inputName3)[0].readOnly = true;
  }
 }

</script>