왜 못넘어 가나요???

그누보드3인데요..

<form name=mypay method="POST" action="javascript:cart_submit;" autocomplete="off">

<input type=img src='<?=$board_skin?>'/btn_ask.jpg  alt='바로가기'>

</form>


<script language="JavaScript">
function cart_submit(f)
{
    f.action = "<?=$board_skin?>/order.php";
    f.submit();
}

</script>

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왜,? order.php로 못넘어가나요?????
뭐가 문제에요???