How does a Fushigi Magic Ball work?

I don't have one but I have seen the commercials for it and was wondering how it works. Thaks|||I got one for Christmas. It basically just has clear thing Round it that makes it look like it's floating, atleast that's how my dad said it worked...you can learn cool tricks with it tho! I really like it!|||its just a form of freeform juggling and you can learn to do it with like any ball.|||It does not really float, you just make it appear to float. It takes years to master it.