Find a better solution than setInterval

[nickdesaulniers]

the setInterval code is brittle and really needs to go. Find a way to resize without having this code run 5 times a second when it's only needed once (after an event perhaps).

[RoboTeddy]

Grumble, my Comcast connection died. On phone. Was rushing to get map working before Caltrain, hence setInterval.

At first was relying on window resize and document ready events, but a purely event-based approach would probably requiring finding an event/callback for Bootstrap's navigation bar toggle completion. I'm sure there is one-- would google for it if had Internet.

Sidenote: although ugly, the setInterval in this case is probably pretty reliable and won't cause performance problems in practice (it's a cheap idempotent call). But I wouldn't complain to see it gone!