Async SVG sprite/symbol loading

async.js

(function(d,p){
	var a = new XMLHttpRequest(), b = d.body;
	a.open("GET", p, !0);
	a.send();
	a.onload = function(){ 
		var c = d.createElement("div"); 
		c.style.display = "none"; 
		c.innerHTML = a.responseText;
		b.insertBefore(c,b.childNodes[0]);
	}
})(document,"../dist/svg/sprite.svg");