Speed up Flash animations online

Hey guys!
I would like to know if you know any method for speeding up flash contents in a webpage, for example Flash games.
Until recently I was using Windows and software like Speed Gear to modify the speed, but I was wondering if it is possible to do something similar on a Mac.
Increasing or decreasing the speed of the animation is of crucial importance for some online games, because it gives a very big advantage.
Thanks in advance for your help!

 

Perfectly agree with that.
However it is not cheating if other people have the option to do the same. If something is not forbidden, then it's legal. That's just my opinion.