$(function () {

	//最大値（px）
	var maxValue = 15;

	//拡大率（px）
	var zoomValue = 1.5;

	//クッキー名
	var cookieName = 'fontsize';
	var changeArea = $('#wrapper');			//フォントサイズ変更エリア

	var defaultFont = changeArea.css('font-size');

	$('#top_btn_m').click(function () {
		changeArea.css('font-size', defaultFont);
		$.cookie(cookieName, defaultFont, {
			path: '/',
			expires: 365
		});
		return false;
	});

	changeArea.css('font-size', $.cookie(cookieName));
	$('#top_btn_l').click(function () {
		var zoomFont = parseFloat((changeArea.css('font-size')).replace(/px/, ''));
		if (zoomFont != maxValue) {
			zoomFont += zoomValue;
		}
		changeArea.css('font-size', zoomFont + 'px');
		$.cookie(cookieName, zoomFont + 'px', {
			path: '/',
			expires: 365
		});
		return false;
	});

	$('#btn_m').click(function () {
		changeArea.css('font-size', defaultFont);
		$.cookie(cookieName, defaultFont, {
			path: '/',
			expires: 365
		});
		return false;
	});

	changeArea.css('font-size', $.cookie(cookieName));
	$('#btn_l').click(function () {
		var zoomFont = parseFloat((changeArea.css('font-size')).replace(/px/, ''));
		if (zoomFont < maxValue) {
			zoomFont += zoomValue;
		}
		changeArea.css('font-size', zoomFont + 'px');
		$.cookie(cookieName, zoomFont + 'px', {
			path: '/',
			expires: 365
		});
		return false;
	});


});