[Typo3] Wrapping whole content

[Robert Markula]

Hi,
I have one question which I thought was easy to solve, but I didn't find 
an answer yet.
How can I wrap the whole content area (styles.content.get)?
I know I could do it with
subparts.CONTENT < styles.content.get
subparts.CONTENT.stdWrap.wrap = <...> | </...>

But I need conditions on the wrap. Point is, for each level in the tree 
there should be a different wrap around all dynamic content that is 
output via styles.content.get.

I thought about something like this:
# Wrapping the whole content
[treeLevel = 0]
   ...stdWrap.wrap = <div id="level_0"> | </div>
[end]

Regards
Ro