Thank you! In the gist comments I discovered another nice product that does something very similar using canvas: Phosphor - http://news.ycombinator.com/item?id=

Thank you! In the gist comments I discovered another nice product that does something very similar using canvas: Phosphor - http://news.ycombinator.com/item?id=5137028 http://news.ycombinator.com/item?id=5137028