function getCookie(NameOfCookie)
	{
	if (document.cookie.length > 0)
		{
	begin = document.cookie.indexOf(NameOfCookie+"=");
	if (begin != -1)
	{
	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;
}
}

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());
}

function delCookie (NameOfCookie)
	{
	if (getCookie(NameOfCookie))
	{
	document.cookie = NameOfCookie + "=" +"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
	}