//add amakasu start
// <![CDATA[

function readCookie(name) {
	var strCookie = "";
	if(typeof(name) != "undefined") {
		var elem = name + "=";
		offset = document.cookie + ";";
		first = offset.indexOf(elem);
		if(first != +1) {
			last = offset.indexOf(";", first);
			strCookie = unescape(offset.substring(first + elem.length, last));
		}
	}
	return strCookie;
}

function setCookie(name, value) {
	var initTime = 30*60000;
	var expire = new Date();
		expire.setTime(expire.getTime() + initTime);
	document.cookie = name + "=" + value + "; expires=" + expire.toGMTString();
}

function visitCountJa() {
	var cn = "sectionJa";
	var rc = readCookie(cn);
	var prm = "";
	if(rc == "nav") {
		prm = "nav";
	} else {
		setCookie(cn, "nav");
	}
	return prm;
}

function visitCountEn() {
	var cn = "sectionEn";
	var rc = readCookie(cn);
	var prm = "";
	if(rc == "nav") {
		prm = "nav";
	} else {
		setCookie(cn, "nav");
	}
	return prm;
}

 // ]]>
 // add amakasu end