У вашего броузера проблема в совместимости с HTML5
Just had to try this funny idea. To make a hinge into a tree for making it fall on a spot. I guess its possible to do some dangerous misstakes if you try this at home. For instance if you make the horizontal cuts to near the hinge bolt, in my test this was actually nearly to close.
The rope on the side was just a chicken safety device to save the house in case of surprices.