[HTML] iframe으로 POST방식으로 데이터 보내기

<-- test1.php -->
<script type="text/javascript>
  function submitFrame(f){
    f.action="test2.php";
    f.method="myiframe";
    f.submit();
  }

</script>
<form id="form"  action="test2.php" method="POST">
  <input type="text" name="data" />
  <iframe width="500" height="500" name="myiframe"></iframe>
 <input type="button" value="" onclick="submitFrame(mail)" />
</form>


<-- test2.php -->
<?
  echo $_POST['data'];
?>