Where am I? (tell me the first and second level navigation levels).

Hello all.

I would appreciate it greatly if somebody could help me with some pointers on how to get information (in Java) on where a user is in the portal. The scenario is the following:

A user has navigated to some page in the portal (for example using a browser favorite) and I want to be able to render to the user what first and second level navigation menu points are selected/highligtet.

Is there a way to ask the portal for such information?

Thank you.