Jquery 表单提交后3s禁用

<form action="${pageContext.servletContext.contextPath}/XXX/###" method="post" id="messageForm">
    姓名:<input name = "name" type="text" />
             <button type="button" id="submit">提交申请</button>
</form>
<script>
$("#submit").click(function(){

    $(this).attr("disabled","true"); //设置变灰按钮
    $("#messageForm").submit();//提交表单
    setTimeout("$('#submit').removeAttr('disabled')",3000); //设置三秒后提交按钮 显示

})
</scritp></span>

</span>