Flash globe carousel

Hello.

I am trying to develop a Flash globe carousel and I need some help in doing so.

A normal carousel moves along a circle.

I am trying to develop a Flash carousel that moves in every direction along the lines of a globe.

You can see attached a normal carousel that I have created. I have tried to upgrade it to a globe carousel but I am having problems in doing so. I need help with the trigonometry.

It is not easy but I am sure that there are people here that understand trigonometry and can point me in the right direction.

I am looking forward to seeing your ideas about how can this be done.

Thank you for your time.