Plugin Navbar and url-rewriting

Hi,
I'm a new user of TBS, and I think it's great.
I'd like to use the plugin NavBar, and I wonder if it's possible to use url-rewriting inside this barnav.
I don‘t really know how to do it. Some help will be appreciated.
(Sorry for my english, I'm french ..... )
Thank you !

Hi Stefy,

There is a french forum if you feel better with it.

The URL rewriting doesn't affect the way you are coding at the PHP side.
You just have to code URLs in your template with the syntax given by the rewriting.

yes; I realise that my question was not complete.
I use a php function : urlrewrinting($url) that returns the url rewrited.
I'd like to apply it to the navbar if it's possible.
So I have to apply it to the PHP side, but I don't know how to get values as 'nv.prev'
or 'nv.next' to be able to use my function.
If it's not possible, I will do as you said.

Parameter "onformat" is what your need.

f_myrewriting() must be a custom PHP function with a particular syntax. See the manual for details and examples.

Thank you very much, I will try :)