too many years ago, I see flash animation source file and I said

How can you make this flash with single frame!!!

As your guess! It’s Flash action script. It may confuse when you start. so you can put “F1″ for read its help and reference.

Action script version 1 like javascript, version 2 is like java

Which version That suitable for me?
It up to your skill, but I usally use version 2. because we can code it both in same code.

If I have more time, I’ll said it later