function getExpireDate(noDays)
{
	var UTCstring;
	today = new Date()
	nomilli = Date.parse(today);
	today.setTime(nomilli+noDays*24*6060*1000);
	UTCstring = today.toUTCString();
	return UTCstring
}

function getCookie(cookieName)
{
	var cookieString = "" +document.cookie;
	var index1 = cookieString.indexOf(cookieName);
	if (index1==-1 || cookieName=="") return "";
	var index2 = cookieString.indexOf(';', index1);
	if (index2==-1)
		index2 = cookieString.length;
	return unescape(cookieString.substring(index1+cookieName.length+1, index2));
}

function setCookie(name, value, duration)
{
	cookieString = name +"=" +escape(value)+";EXPIRES="+getExpireDate(duration);
	document.cookie = cookieString;
	if (!getCookie(name))
	{
		return false
	}
	else
	{
		return true
	}
}