// Image
$bbcode_tpl['img'] = <<<HTML
<var class="postImg" rel="gallery" title="$1"> </var>
HTML;
$bbcode_tpl['img_aligned'] = <<<HTML
<var class="postImg postImgAligned img-\\1" title="\\2"> </var>
HTML;
Ищешь это и добавляешь в теге ссылки. Вроде туда надо.postLink
function url_callback ($m)
{
global $bb_cfg;
$url = trim($m[1]);
$url_name = (isset($m[2])) ? trim($m[2]) : $url;
$img['ext'] = array('jpg','jpeg','png','gif');
$path_info = pathinfo($url);
(isset($path_info['extension'])) ? $ext= $path_info['extension'] : $ext = 'notimg';
if(in_array($ext,$img['ext'])){
$dlink="<a href=\"$url\" class=\"postLink\" rel=\"thumbnail\">$url_name</a>";
}
else $dlink="<a href=\"$url\" class=\"postLink\"$url_name</a>";
$exlink="<a rel=\"nofollow\" href=\"$url\" class=\"postLink\">$url_name</a>";
return (in_array(parse_url($url,PHP_URL_HOST), $bb_cfg['allowed_url'])) ? $dlink : $exlink;
//return (in_array(parse_url($url,PHP_URL_HOST),$bb_cfg['allowed_url'])) ? "<a href=\"$url\" class=\"postLink\">$url_name</a>" : "<a rel=\"nofollow\" href=\"$url\" class=\"postLink\">$url_name</a>";
}
<script src="{SITE_URL}misc/js/tv/thumbnailviewer.js?v={$bb_cfg['js_ver']}" type="text/javascript"></script>
<link rel="stylesheet" href="{SITE_URL}misc/js/tv/thumbnailviewer.css?v={$bb_cfg['css_ver']}" type="text/css" />