Load stylesheets after DOM render

load_stylesheets.js

	var cb = function ()
	{
		var s = document.querySelector('head style:last-of-type');

		['/path/to/stylesheet/one.css','/path/to/stylesheet/two.css']
		.forEach(function (v)
		{
			var l = document.createElement('link'); l.rel = 'stylesheet'; l.href = v;
			s.parentNode.appendChild(l, s);
		});
	}

	var raf = requestAnimationFrame || mozRequestAnimationFrame ||
		webkitRequestAnimationFrame || msRequestAnimationFrame;
	if (raf) raf(cb);
	else window.addEventListener('load', cb);