Play / Stop
There are 2 images: the animated one (labyrinth-animated.gif),
and one without animation (labyrinth.gif)
By defaut (=opening the page) the img without animation is showed.
If the Play/Stop button is clicked (or anywhere else on the image),
a small toggle javascript is running to replace the one by the other.
See source code!
Animated image:
http://commons.wikimedia.org/wiki/File:Triple-Spiral-Labyrinth-animated.gif
