function createCookie(sName, sValue, nDays)
{
	if ( nDays )
	{
		var date = new Date();
		date.setTime(date.getTime() + (nDays * 24 * 60 * 60 * 1000));
		var sExpires = "; expires=" + date.toGMTString();
	}
	else
	{
		var sExpires = "";
	}

	document.cookie = sName + "=" + sValue + sExpires + "; path=/";
}

createCookie("CBOEtour", "true", 365);