How to Recreate This Effect

I’m building a site using NetObjects Fusion 8. One of their templates (photography) incluses a sample Flash movie. The effect is that of a lens apeture opening and closing to change pictures.

Would appreciate any thoughts/suggestions how to do this, or if the files might be available on line someplace. Below is a link to a page that has just the flash movie.
http://mysite.verizon.net/res0ivlx/