Navigation Theory (know any good tutorials?)

[Gostop01]

Does anyone know a good tutorial or a good example of well thought out navigation.
For example If I have a menu bar that leads to pages A, B, or C. If I am allready on page B and I click on the Menu that leads toB, how do I tell flash that I am allready on B so that it doesnt re-load page B.

[binkyboo]

Just disable the menu so you can't click in it while on that page. Maybe you could you mcName.enable = false; Just an idea.