struts2标签和ognl表达式根据合格数/总数得到百分比合格率问题?

 <s:hidden id="standrad" name="productTrackCard.standardamount"/>

      <s:hidden id="total" name="productTrackCard.totalAmount"/>

      <s:hidden id="formno" name="formNo"/>

      <script type=text/javascript>

	      var total = $("#total").val();

	      var stand = $("#standrad").val();

	      var formno = $("#formno").val();

	      var s = Math.round(stand/total*10000);

	      s = s/100+"%";

	      $("#"+formno).text(s);

      </script>