아래의 소스처럼 했는데 라디오버튼 필수 체크가 적용되지 않습니다.
어떤게 잘못되어있는지 모르겠습니다. 도와주세용 부탁입니당~~


<!--라디오버튼 필수체크 활성화-->
    <script type="text/javascript">
function form_check(f) { 
<? if(f.wr_89.checked == '') {
alert('입금은행을 선택해주세요');
return false;
} ?>
f.action='./price_1_insert_update.php';
return true;
}
</script>


-------------------------------------스크립트부분 (윗쪽) ---------------------------------------------------
   
    <?
if($view[wr_89]){
  echo "<b><font color=#0033FF>입금완료 체크 되었습니다! ($view[wr_89] 계좌)</font></b>";
  if ($member[mb_level] >= 8)  {
  echo "<form name=price_1 method=post onsubmit='return form_check(this)';>
<input type=hidden name=bo_table value='$bo_table'>
<input type=hidden name=wr_id value='$wr_id'>
<input type=hidden name=page value='$page'>
<input size=10 name=wr_92  value='$view[wr_89]'>
<input name=button type=submit class=style29 id=button value='관리자-1차 입금확인완료'>
</form>";
}
} else {
  if($write[wr_89] == "우리은행"){
    $chk_1="checked";
  }elseif($write[wr_89] == "국민은행"){
    $chk_2="checked";
  }elseif($write[wr_89] == "중국공상은행"){
    $chk_3="checked";
  }
  echo "
---------------------------------------아랫쪽 폼적용-----------------------------------------------------------
  <form name=price_1 method=post action=./price_1_insert_update.php>
  <input type=hidden name=bo_table value='$bo_table'>
  <input type=hidden name=wr_id value='$wr_id'>
  <input type=hidden name=page value='$page'>
  <input type=radio name=wr_89  value='우리은행' $chk_1  />우리은행
  <input type=radio name=wr_89  value='국민은행' $chk_2  />국민은행
  <input type=radio name=wr_89  value='중국공상은행' $chk_3 />중국공상은행(현지고객전용)<br />
  <input name=button type=submit class=style29 id=button value='1차비용 입금완료' />
  </form>";
}
?>