title: What event fires when the address bar hides or moves?
body: <p>I am trying to resize a <code>fixed</code> position <code>canvas</code> when my address bar hides on mobile divices. The <code>canvas</code> is meant to cover the entire page and I do this with Javascript by setting the <code>height</code> and <code>width</code> of the <code>canvas</code> to <code>document.documentElement.clientWidth</code> and <code>clientHeight</code> respectively. When the address bar hides no <code>resize</code> event is fired and I am left with a gap on my screen. Does any event fire when the address bar hides and if so what is that event?</p>