How to make a good navigation ?

[eluser]Diti[/eluser]
Good afternoon guys,

I was reading the article « Où suis-je », a translation of the Alistapart's “Where am I ?” when I wondered if CI is able to satisfy that :

Building in a lot of if/then statements to change the links per page takes some extra time. But it’s so worth it. Simply changing a global navigation item to be plain old text when you’re on that page means that it will look different (visual recognition of your present place) and will avoid the click-to-go-to-where-you-already-are bad experience.

Is that possible to follow all navigation principles thanks to CodeIgniter ?
My site follows the Derek Allard's sample website in coding techniques.

Oh, and could you read that : http://alistapart.com/articles/keepingcurrent ?

Thanks.
Diti.