var COOKIE_NAME = "readMission";
var COOKIE_PERIOD = 1000000;

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function getAccessNo(){
	var n = parseInt(readCookie(COOKIE_NAME));	

	if(isNaN(n))
		n = 0;

	return n;
}

function updateAccessNo(n){
	createCookie(COOKIE_NAME, n, COOKIE_PERIOD);
}