title: catch-all keyup/keydown events in iframe?
body: <p>I'm working on a canvas-based game and am using <code>window.addEventListener()</code> to attach <code>keyup</code> and <code>keydown</code> events globally. This works in when viewing the page normally, but when embedding it as an iframe; it doesn't get the keyup and keydown events. Is there a better way I can do this?</p>