[support] Ajax Tabs in Drupal 6

I have a custom module which I must upgrade from D5 to D6. In D5 I used the tabs module (part of the jstools module) and code like:

$form['example1']['tab2'] = array( '#type' => 'tabpage', '#title' => t('Audio'), '#url' => base_path().'ajax/nodelist/audio', '#target' => 'media_tab', );

and it magically makes this tab link load the content via Ajax. OK, someone else wrote this code, but anyhow it works. I tried to do the same thing with the D6 tabs module (now not part of jstools) but no Ajax happens. :(

There is also the magictabs module, but AFAICT that module creates all the content for all the nodes when the page is called, as opposed to what I want, which is to only generate the content for each node when it's requested, via a callback.

I could write some jQuery code to do this myself I suppose, but I was wondering if there's a module that does this or if I the tabs module can do this?

Thanks