<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>