Navigation bar trouble

hey everyone…been awhile since i needed a hand, but i’m stuck on trying to figure this out…though, it’s probably a simple problem on my part…

anyway, my problem is this:

i want to create a navigation bar that follows the mouse on the y axis as the user moves around the screen.

once the user clicks a button, i want the navigation bar to quickly move up to y coordinate 57 and i want the navigation bar to be fixed to that spot from then on.

i’ve attached my fla. i have the following of the mouse working…but as far as getting the button to snap the navigation bar to the coordinate…shrug…

thanks in advance to anyone that can help