var w = (window.navigator.userAgent.indexOf("MSIE") == -1) ? window.innerWidth : document.documentElement.clientWidth;
if (w < 1200) {
	if (location.href.indexOf("&size=") == -1) {
		location.replace(location.href + "&size=M");
	} else if (location.href.indexOf("&size=M") == -1) {
		location.replace(location.href.replace(/&size=./, "&size=M"));
	}
} else if (location.href.indexOf("&size=") != -1) {
	location.replace(location.href.replace(/&size=./, ''));
}