Jquery改变form的action

<script type="text/javascript">
     $(function () { $("#add").click(function () {
                 $("form:eq(0)").attr("action", "add.aspx?type=add&id=1").submit();
           });
           $("#del").click(function () {
                 $("form:eq(0)").attr("action", "del.aspx?type=del&id=999").submit();
           });
     });

</script>
<a id="add" href="#">增加</a>
<a id="del" href="#">删除</a>

<form action="test.aspx">

</form>