<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>