scrollToID is a jQuery plugin that attaches to an anchor link. Just make the anchor reference an id with the # tag. It nicely falls back to standard anchor links and accepts an offset and speed argument.
It's so easy:
<a href="#infobox" class="js-scrolltoid">Click Me</a>
$('.js-scrolltoid').scrollToID({
speed: 1000, //expressed in Milliseconds
offset: 30 //in pixels
});