FLASH BUTTON AND IMAGE TRANSITION

Need to make two movies for use on one page - one with buttons that tells the top movie to change between the images. I am sure simple enough for flash guru's. My flash skills arent great at all - but can get around. When the page is initially loaded the first frame of the top movie loads in nicely. Then: The buttons need to work exactly like this [login to view URL] The small image movie, changes the top movie with the same type of transition as in the above website. I need it to be easily editable to so we can change the images to apply to different pages. So *.fla file must be supplied as well with a small amount of instruction on changing the image. This will then be used on a couple of pages of website. Top movie dimensions: 550 x 250px Bottom button dimensions 56px x 56px each, 4 buttons (total 248 x 77px). Small writing underneath each button in GILL SANS MT - Grey. It would be good if you could be done in FLASH MX, have FLASH 8 as well but dont know my way around at all.