There's a bug on the level jazzmans, if you try to move in the wrong direction (against the red goal) when you move in the right direction again the ball will get stuck. Please fix ASAP (hahaha).
This game is a classic on the internet, one of the first I ever played and still one of my favourites.
It looks so complicated until you get the hang of it. It's all about seeing what's hidden in plain sight.