load JS with requestAnimationFrame.js

/*!
 * load JS with requestAnimationFrame
 * stackoverflow.com/questions/28394097/async-loading-css-stylesheet-using-requestanimationframe
 */
function loadJSwithRaf(s, c) {
	function l() {
		var a = document.getElementsByTagName("script")[0],
		t = document.createElement("script");
		t.src = s;
		t.async = !0;
		t.charset = "utf-8";
		a.parentNode.insertBefore(t, a);
		c && "function" === typeof c && (t.onload = c);
		return t;
	}
	"function" === typeof requestAnimationFrame ? requestAnimationFrame(l) : "function" === typeof mozRequestAnimationFrame ? mozRequestAnimationFrame(l) : "function" === typeof webkitRequestAnimationFrame ? webkitRequestAnimationFrame(l) : "function" === typeof msRequestAnimationFrame ? msRequestAnimationFrame(l) : "function" === typeof window.addEventListener ? window.addEventListener("load", l) : window.onload = l;
};