//Get Cookie
	function getCookie(NameOfCookie)
	{
		if (document.cookie.length > 0)
		{
			begin = document.cookie.indexOf(NameOfCookie+"=");
			if (begin != -1) // Note: != means "is not equal to"
			{
				begin += NameOfCookie.length+1;
				end = document.cookie.indexOf(";", begin);
				if (end == -1) end = document.cookie.length;
				return unescape(document.cookie.substring(begin, end)); 
			}
		}
		return null;
	}
	
	//Set Cookie
	function setCookie(NameOfCookie, value, expiredays)
	{
		var ExpireDate = new Date ();
		
		ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
		document.cookie = NameOfCookie + "=" + escape(value) + ((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
	}
	
	//Delete cookie
	function delCookie (NameOfCookie)
	{
		if (getCookie(NameOfCookie)) 
		{
			document.cookie = NameOfCookie + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
		}
	}