Changes 12/23/14 - Javascript

I was ready for an EIMACS test but couldn't take it, so I just worked on JavaScript.  I'm trying to make the shaking elements on ahirschberg.github.io use canvases instead of changing the position of the elements directly, because that is more reliable and less resource intensive for the browser, since only the pixels move within the canvas rather than the browser constantly having to update the object's position in the DOM.