public void SecondPwd_Set()
        {
            mu = buser.GetLogin(false);
            string action = SafeSC.GetRequest("action");
            string pwd    = (Request.Form["pwd_t"] ?? "").Trim(' ');
            string oldpwd = (Request.Form["oldpwd_t"] ?? "").Trim(' ');

            if (action.Equals("update"))
            {
                if (mu.PayPassWord != StringHelper.MD5(oldpwd))
                {
                    function.WriteErrMsg("原密码错误,请重新输入!"); return;
                }
            }
            if (string.IsNullOrEmpty(pwd))
            {
                function.WriteErrMsg("二级密码不能为空");
            }
            if (StringHelper.MD5(pwd).Equals(mu.PayPassWord))
            {
                function.WriteErrMsg("新密码和原密码不能相同"); return;
            }
            mu.PayPassWord = StringHelper.MD5(pwd);
            buser.UpDateUser(mu);
            function.WriteSuccessMsg("操作成功", "/User/Info/Index");
        }