Flash Page Flipper with gatefold included

I have a page flipping component that I need to re-build so that we can have an animated gatefold option. The component we have currently is stationary and we need it to move so that the gatefold can fold out. It should be like [login to view URL] page 5-6. We have the source code of the component and will supply it. We just need the gatefold animation added. We also need to keep its current features as we have added many to it and we can't change those. If you click on either of the middle curls at the bottom of page 6, you'll see how the gatefold unfolds.