// handle cookies (chocolate chip only)
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();
}

function getCookie(name) 
{
	var dc = document.cookie;
	var prefix = name + "=";
	var begin = dc.indexOf("; " + prefix);
	if (begin == -1) 
	{
		begin = dc.indexOf(prefix);
		if (begin != 0) return null;
	} 
	else
		begin += 2;
	
	var end = document.cookie.indexOf(";", begin);
	
	if (end == -1)
		end = dc.length;
	
	return unescape(dc.substring(begin + prefix.length, end));
}