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…

http://www.flowingmist.web1000.com/portofoliu.htm

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

http://www.kirupaforum.com/forums/showthread.php?s=&threadid=42279&highlight=fmx+mc+animation