(function (d, c) {
	var e = d.documentElement,
		b = "orientationchange" in window ? "orientationchange" : "resize",
		a = function () {
			var f = e.clientWidth;
			if (!f) {
				return
			}
			if (f < 768) {
						//f = 640		
						e.style.fontSize = 100 * (f / 767) + "px";
						}	
			else{
				e.style.fontSize = "medium";
			}
		};
	if (!d.addEventListener) {
		return
	}
	c.addEventListener(b, a, false);
	d.addEventListener("DOMContentLoaded", a, false)
})(document, window);