How is this site designed (with the scrolling/changing background)?

[AshleyQuick]

I've seen this design methodology a couple times (this site being the most recent)? Can someone point me to a tutorial/demo?

Site: 78violet.com/

[Snookerman]

Check out this tutorial: http://net.tutsplus.com/tutorials/html-css-techniques/simple-parallax-scrolling-technique/

[AshleyQuick]

Thank you!