Someone

// $status equals 'fail' or 'pass';

            $status = $object->txtpassfail;
            $retval .= '<td class="nowrap alt">';
            if (strpos(strtolower($status), 'pass'))
            {
                $retval .= '<span class="alert">'.$status.'</span>';
            }
            if (strpos(strtolower($status), 'fail'))
            {
                $retval .= '<span class="ok">'.$status.'</span>';
            }
            $retval .= '</td>';