I like the general idea for a physics based lacrosse game. When the physics were working it was very fun, but there were several times where it felt like the controls were not working as intended. I would suggest not using the middle mouse click as an input for a browser game, since that scrolls the page (even in full screen which is weird).
I also liked the different angles you can do, but there didn't seem to be much incentive to use another angle besides the top throw.