/**
 * Cookieから値を読みだす
 * @param {String} inKey キー文字列
 * @return 値
 */
function getMyCookie(inkey) {
	key=inkey+"=";
	tmp = document.cookie+";";
	pos = tmp.indexOf(key);
	if(pos == -1) {
		return null;
	} else {
		sepPos = tmp.indexOf(";", pos + key.length);
		return unescape(tmp.substring(pos + key.length, sepPos));
	}
}
/**
 * Cookieに値を設定する
 * @param {String} key キー文字列
 * @param {Object} val 値
 */
function setMyCookie(key, val) {
	date = new Date();
	date.setTime(date.getTime()+1000*60*60*24*365);
	document.cookie=key+"="+escape(val)+"; expires=" + date.toGMTString()+"; path=/;";
}

function getCharNumber() {
	var num = 0;
	if(window.name == window.location.href) {
		//リロード対応
		num = getMyCookie("CharNumber");
	} else {
		num = Number(getMyCookie("CharNumber"));
		if(num > 0) {
		} else {
			num = Math.floor(Math.random()*4)+1;
			setMyCookie("CharNumber", num);
		}
	}
	window.name = window.location.href;

	return Number(num);
}

function getCharNumberTop(isNotSkip) {
	var num = 0;
	if(window.name == window.location.href) {
		//リロード対応
		num = getMyCookie("CharNumber");
	} else {
		if(isNotSkip) {
			num = Number(getMyCookie("CharNumber"));
			if(num > 0) {
			} else {
				num = Math.floor(Math.random()*4)+1;
				setMyCookie("CharNumber", num);
			}
		} else {
			//初期表示時
			num = Math.floor(Math.random()*4)+1;
			setMyCookie("CharNumber", num);
		}

	}
	window.name = window.location.href;

	return Number(num);
}
function isFirstView() {
	var view = getMyCookie("IsView");
	setMyCookie("IsView", 1);
	if(view && view == 1) {
		return false;
	} else {
		return true;
	}
}