self-toted as the only script needed in your <head>, head.js is a pretty exciting project that does lots of things:
* it loads scripts in parallel for maximum script loading performance, while still executing them in order.
* like modernizr, it detects support for css3 attributes and slaps classes on the <html> element, so you can target any scenario of support.
* graceful detection and fallback support for html5 elements.
* screen size, browser, and path detection.
that’s a pretty hearty potato for only 2.3kb.