<script type="text/javascript">        
        $('span.forumViewed').each(function (i, g) {        
        $.get($(this).parent().find('a.forum').attr('href'), function (data) {        
        g.innerHTML = '[' + $('td.forumOnlineBar:first', data).html().replace('$USERNAME$', '') + ']';        
        });        
        });        
        </script>