<script type="text/javascript">

    function download(selectedtype) {
      document.albumdl.supporttype.value = selectedtype;
      document.albumdl.submit();
    }

    </script>




<FORM METHOD='POST' NAME='albumdl' ACTION='/add/'>\n
<input type='hidden' name='supporttype' />
<a href='javascript:download("test")'>Click here</a>
</FORM>