Pages, subpages and sidebar

Hi

I’m working on this site:

http://www.kulturvesterbro.dk/

It’s based on the Pool theme, because i like the tabbed navigation.

As you see I have some main sections:

Forside (frontpage)
Kulturhuset
Kulturstaldene
Basement

I want to list childs of those pages as a submenu when they are active.

So when you for example click on the tab of the Main section “Kulturhuset” the subpages of “Kulturhuset” should appear in the sidebar/menu. And not any links to other pages.

Kulturhuset (active tab)

(sidebar)
– About
– Information
etc.

I only want the subpages or childs of that section to appear in the menu. What should my approach be?

I was thinking, that I should create a template for each main section. The only difference in those templates would then be the wp_list_pages command. It would look something like:

<?php wp_list_pages(‘child_of=0’); ?>

Is this the right approach? Or should I make different sidebars for each Main section instead? Wouldn’t I then need a template for each Main section AND a Sidebar for each. What is the smart approach here?

Is there some way for WordPress to recognize a specific parent page and then call e.g. a specific sidebar?

I hope my post and my description of the way I want my site to behave makes sense. Otherwise ask.

Thanx in advance

Mark