About ajaxSearchConfig

            if ($this->dbCharset != 'utf8' && !extension_loaded('mbstring')) {
                $msgErr = "AjaxSearch error: php_mbstring extension required";
            } else {
                if ($this->cfg['mbstring']) mb_internal_encoding("UTF-8");

            if ($this->dbCharset == 'utf8' && !extension_loaded('mbstring')) {
                $msgErr = "AjaxSearch error: php_mbstring extension required";
            } else {
                if ($this->dbCharset == 'utf8' && $this->cfg['mbstring']) mb_internal_encoding("UTF-8");