Dizkus

Trying to establish a kind of navigatio I would like to know if someone has already tried this and succeeded in it.

I would like a naviagtionbar with links to several topics (not referring to the PostNuke topics).
Depending on the topic selected by the visitor I would like to present a different PostNuke menublock as a left block. Thinking how this could be achieved I thought of abusing the language module. Topic1, change the language to language1 (eg french) topic2, change the language to language2 (greek)
I would have to copy all (in my case) dutch language files to the greek and french language directories and publish all content for all languages.
I think the hardest part will be to change the language via a button and including the session id.

Any experience in this or any ideas.