This is the second part in our introduction to HTML5's video API. In part 1 of this series, I introduced you to the basic markup we'll be using to play the video, then I helped set up a simple script with which we were able to make the controls visible, while ensuring that the native controls will still be visible when JavaScript is disabled. We also touched on the use of JavaScript's addEventListener method, along with our first look at the video API -- the canplaythrough event. Let's dig a little deeper into...