function GetCookieVal(nOffset)
{
	var endstr = document.cookie.indexOf (";",nOffset);
	if (endstr == -1)
		endstr = document.cookie.length;
	return unescape(document.cookie.substring(nOffset,endstr));
};


function GetCookie(szName)
{
	var arg = szName + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while (i < clen)
	{
		var j = i + alen;
		if(document.cookie.substring(i,j) == arg)
			return GetCookieVal(j);
		i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0) break;
	};
	return null;
};


function SetCookie(szName, szValue)
{
	var argv = SetCookie.arguments;
	var argc = SetCookie.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;
	document.cookie = szName + "=" + escape (szValue) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + ((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : "");
};


function DeleteCookie(szName)
{
	var exp = new Date();
	exp.setTime (exp.getTime() - 1);
	var cval = GetCookie(szName);
	document.cookie = szName + "=" + cval + "; expires=" + exp.toGMTString();
};


function setPermanentCookie(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());
}