5th button state?

I've made a nav bar using buttons, and have them working just fine for Up, Over, Down, and Hit. (okay, so hit isn't a state, but I'll count it is as the fourth one)

Problem is, once clicked on and produces a change in the flash, I want the button to not return to the Up state, but to visually be different so you can tell you are in that section.

First problem is I can't for the life of me think of what that state is called. :)
(Makes it hard to search for, and my poor little brain is fried right now.)

Second problem is, can I force a button to not go back to up state? (either the over or down state would work fine).

Or do I have to detect the click and then make a call to swap out the button file for the relevant section?

Thought I should come back and leave a reply in case someone else reads this looking for a solution.

The word I couldn't think of was "Active." (I've gotten sleep since the original posting)

And the solution for the active state is easy as pie. I was just too focused on trying to force the button to remain in a state.

Solution is: place the button on a two frame MC in frame 1. Stop. Active content on frame 2.

Simple.
(and this also removes the issue of the cursor behaving like... well the button is a button).