Cool JavaScript tricks

This is a cool JavaScript to shoot everything in a web page.paste the following code in url and press enter.(Tested on Chrome)

javascript:var%20s%20=%20document.createElement('script');s.type='text/javascript';document.body.appendChild(s);s.src='http://erkie.github.com/asteroids.min.js';void(0);


A small triangular will appear in left corner of the web page and then you can use
spacebar=to shoot
arrow keys=to move
Esc = exit

Enjoy shooting the web elements :D.