(function(doc, win) {
				var docEl = doc.documentElement,
					resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
					recalc = function() {
						window.clientWidth = docEl.clientWidth;
						if(!window.clientWidth) return;
						docEl.style.fontSize = 30 * (window.clientWidth / 750) + 'px';
						window.base = 30 * (window.clientWidth / 750);
					};
				if(!doc.addEventListener) return;
				win.addEventListener(resizeEvt, recalc, false);
				doc.addEventListener('DOMContentLoaded', recalc, false);
			})(document, window);