With your nice mod, I can create a subforum navigation in the sidebar

.
But one Problem: How to determine, in which forum the user is at the moment?
I can set my php-block to "never cache", but $forum[forumid] is not evaluated at the moment, "includes\block\html.php" evaluates it...
An idea how to solve this?
Thanks!
Bruno
Edit: Got it! Use
$GLOBALS['foruminfo']['forumid']