if ( $this->result && ! is_wp_error( $this->result ) ) {
            if ( ! $this->error )
                echo '
' . sprintf($this->upgrader->strings['skin_update_successful'], $title, 'jQuery(\'#progress-' . esc_js($this->upgrader->update_current) . '\').toggle();jQuery(\'span\', this).toggle(); return false;') . '
';
                    echo '';
        }