A few weeks ago I wrote Reaction Time explaining the art of
relative interactivity.  Today I found another perfect example!
I’m using a technique based on Ariel Flesler’s excellent jQuery
scrollTo plugin. The plugin scrolls the document until a
specific element is in view. The set up: I have several tabs on
my page that update content below them. I want to scroll to that
content as a visual guide for users to indicate what has changed
and to bring it center stage. It’s a fully responsive design so
on small screens this interaction is very useful.  The simplest
jQuery implementation would look like this:  var target =
$('#target'); $(window).scrollTo(target, { duration: 500 });
That will do exactly what I want, once bound to a click event —
why go any further?  Because that’s going to suck.  The
.scrollTo(); method takes a few options but the basic ones I
care about are the duration (milliseconds) and an easing
function (that “specifies the speed at which the animation
progresses at different points within t