setCookie = function (key, value) 
{
	if (document.cookie.length) 
	{
		document.cookie = key + "=" + escape(value);
	}
}

getCookie = function (key) 
{
	if (document.cookie.length) {
		var start = document.cookie.indexOf(' ' + key + '=');
		if (start == -1) { return null; }
		var end = document.cookie.indexOf(";", start);
		if (end == -1) { end = document.cookie.length; }
		end -= start;
		var cookie = document.cookie.substr(start,end);
		return unescape(cookie.substr(cookie.indexOf('=') + 1, cookie.length - cookie.indexOf('=') + 1));
	}
	else { return null; }
}