protected string joinMailingListSuccess()
        {
            string addToMailingList = Request.QueryString["a"];
            string emailAddress = Request.QueryString["e"];
            string errMsg = String.Empty;

            if (addToMailingList != "")
            {
                mySqlConnector mySqlConn = new mySqlConnector();
                try
                {
                    if (mySqlConn.isInitialized())
                    {
                        return mySqlConn.joinMailingList(emailAddress)?  "true" : mySqlConn.connErrMsg;
                    }
                    else
                    {
                        return "db connection err";
                    }
                }
                catch(Exception ee)
                {
                    errMsg = ee.Message.ToString();
                    return "db connection error";
                }

            }
            else
            {
                return "err";
            }
        }