Tootsville.UI.HUD.refreshHUD is nullary function.
Refresh HUD elements that are set by server events (other than the clock), such as equipment, talk status, and wallet readouts.
These elements are refreshed about every 333 ms, but occur in a 4msec (the minimum allowed setTimeout value for HTML5) timeout handlers so as to be more effectively asynchronous (and because browsers bitch if you run too long in one setInterval handler).