So there’s the great thing called response.js. It’s the solution often presented as ideal. But it’s a bit overkill. I want a fast, light, small script that will do the job, without all the media-query overhead.
I’ve tried the other responsive stuff, and it’s just too delicate at this point in web-history.
UPDATE: this breaks on Android, since it pulls in the full-layout width first. So if you use this, be careful with your normal vs. mobile wrapper widths.