I am trying to create a similar effect as seen here:

<http://timothypoon.com/blog/2011/01/19/html5-canvas-particle-animation/>

However, I can't seem to get this to work on my page and I would like to apply this effect in a div that contains an image. Is this possible or does everything have to happen on the canvas?

When I try to recreate the effect described in the tutorial I get lots of errors such as variables not being defined etc.