/*フォントサイズ変更*/
function changeFsize(size) {
	var change = document.getElementsByTagName("body")[0];
	switch(size) {
		case "s": var percent = "90%"; break;
		case "m": var percent = "100%"; break;
		case "l": var percent = "110%"; break;
	}
	change.style.fontSize = percent;
}