old en new icons

I tried chancing the viewforum.php for locked en sticky topics and it works fine but how do i chance the new en old icons?

I tried the css like in http://punbb.org/forums/viewtopic.php?id=9133 but it doesn't work.

Anyone any ideas how to manage that in the viewforum.php. Played with:

if (!$pun_user['is_guest'] && $cur_topic['last_post'] > $pun_user['last_visit'] && $cur_topic['moved_to'] == null)
        {
            $icon_text .= ' '.$lang_common['New icon'];
            $item_status .= ' inew';
            $icon_type = 'icon inew';
            $subject = '<strong>'.$subject.'</strong>';
            $subject_new_posts = '<span class="newtext">[ <a href="viewtopic.php?id='.$cur_topic['id'].'&action=new" title="'.$lang_common['New posts info'].'">'.$lang_common['New posts'].'</a> ]</span>';
        }

Need help here!!!