Trying to create conditional Nav

Hey Yall, Happy friday the 13th everyone.

Okay so I have always made my navigation with out conditional statements where they would just be clickable and then something would occur. I want to try to have a nav on this new project where if a Navigation MC is clicked it would stay in a certain state showing that the user is on that page level.

I have watched this tutorial here:
http://www.kirupa.com/developer/flash8/video/conditionals_toggle.htm

However that is just for one button. Does anyone know of a tutorial out there where it is applied to a full set of navigaton?

Thanks in advance
MT