UTF-8 로 form 값 넘기기

<script>
 function ddd(){
  document.charset='utf-8';
  document.frm.action='test.asp';
  document.frm.submit();
 }
</script>
<form name="frm" method="post">
 <input type="text" name="title" value="123123"><br>
 <textarea name="subject" cols="50" rows="10"></textarea><br>
 <input type="button" name="button" value="확인" onclick="ddd();">
</form>