private void CheckEmail()
        {
            DB.Cloud cloud = new DB.Cloud();

            int MailCnt = cloud.m_CheckUserEmail(strEmail);

            if (cloud.dsReturn.Tables[0].Rows.Count == 0)
            {
                Response.Write(callback + "({\"error\":1, \"desc\":\"사용가능한 Email 입니다\"})");
            }
            else
            {
                Response.Write(callback + "({\"error\":2, \"desc\":\"cloud 이미 사용중인 Email입니다\"})");
            }
        }