For folks who wanted a less intensive glass effect, they could pick and choose from the tutorial. You get a pretty respectable piece of glass at step three with just blur and shadow. I'd personally recommend doing that and mixing in a static light ray image. IDT most applications would need the full JavaScript effect. It's fun but it can be distracting.

With blur, shadow, and light rays alone you can already get _really close_ to that Forza image at the top.