Parallax References

Here are three, with different effects, and downloadable source files:

http://pepsized.com/merry-scrolling-with-skrollr-js/

http://tympanus.net/codrops/2012/04/30/fluid-css3-slideshow-with-parallax-effect/

http://www.script-tutorials.com/css3-parallax-scrolling-slider/