Alton is a jQuery-powered scrolling plugin that utilizes custom vertical scrolling effects in order to present and navigate through web content in a unique manner.
isInViewport.js is an ultra-light jQuery plugin that tells you if the element is in the viewport, but with a twist. It lets you select a visible element(s) using the
:in-viewport selector or by calling the
.isInViewport() method on the element(s).