Описание тега skrollr
Skrollr is a stand-alone parallax scrolling library for mobile (Android + iOS) and desktop.
Skrollr is much more than "just" parallax scrolling. It's a full-fledged scrolling animation library. In fact, you can use it and still have no parallax scrolling at all. Skrollr leverages HTML5 and CSS 3. It is not dependent on jQuery - it's just plain JavaScript.
Official site: http://prinzhorn.github.io/skrollr/