Flash Menu Buttons flicker when pressed

I created a menu from an image that I sliced up in Photoshop CS2 then took those images into flash 8 and created a rollover effect then took those buttons and put them into a webpage to create a menu.
The problem is that when I run the webpage and press on the any of the menu flash buttons all the buttons disapear and all you see are black boxes where the buttons were and then the buttons re-apear. It looks terrible. Is there anyway to smooth out the process?
Thank You