Disable buttons

what can i do to disable some buttons when a movie loads on top of them?
i have a main movie with thumbnails and when i open the large image i want the buttons in the back to be disabled…


see this url please if you don’t understand… click on my eye and then on the thumbnail in the lower right corner… a photo with a mountain should appear… i want all buttons that cannot be seen to be disabled… is there a quick way to do it?

Have a look at this hread…might help