Rails - Mar 2006 - Page navigation using named routes (need your help)

Hello,

I want to use named routes to create page navigation.
For instance I have these named routes:

map.homepage ''/'', ...
map.links ''/links'', ...
map.catalog ''/products/catalog/'', ...
map.catalog2 ''/catalog/:year/'', ...

And then have a map which defines navigation on the basis of the named
routes (just for imagination):

homepage: mysite > homepage
links: mysite > links
catalog, catalog2: mysite > products > catalog


My problem:

The only thing I need to know is the name of the current route, which has
been distinguished from the current request. Can you help me, please?
Where can I get the name?

Thank you,
jan