http://en.wikipedia.org/wiki/JavaScript
https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript
https://itunes.apple.com/us/itunes-u/programming-abstractions/id384232917
http://www.codecademy.com/courses/javascript-beginner-en-x9DnD/0/1?curriculum_id=506324b3a7dffd00020bf661