function setCookie(cookieName, cookieValue, nDays) {
	var today = new Date();
	var expire = new Date();

	if (nDays==null || nDays==0) {
		nDays=1;
	}

	expire.setTime(today.getTime() + 3600000*24*nDays);
	document.cookie = cookieName+"="+escape(cookieValue)
	+ ";expires="+expire.toGMTString();
}