function getCookieVal (offset)
	{
		var endstr = document.cookie.indexOf (";", offset);
		if (endstr == -1)
			endstr = document.cookie.length;

		return unescape(document.cookie.substring(offset, endstr));
	}

	function GetCookie (name)
	{
		var arg = name + "=";
		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 WriteCookie (name, value, expires)
	{
		var argv = SetCookie.arguments;
		var argc = SetCookie.arguments.length;
		var path = '/';
		var domain = (argc > 4) ? argv[4] : null;
		var secure = (argc > 5) ? argv[5] : false;

		var cookie = name + "=" + escape(value) +
			((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
			((path == null) ? "" : ("; path=" + path)) +
			((domain == null) ? "" : ("; domain=" + domain)) +
			((secure == true) ? "; secure" : "");

		document.cookie = cookie;
	}

	function DeleteCookie (name)
	{
		var exp = new Date();
		exp.setTime (exp.getTime() - 1000000000);  // This cookie is history (changed -1 to make it previous time)
		var cval = GetCookie (name);
		document.cookie =name + "=" + cval + "; expires=" + exp.toGMTString();
	}

	function SetCookie(name, value, expiredays)
	{
		var expdate = new Date();
		expdate.setTime(expdate.getTime() + (24 * 60 * 60 * 1000 * expiredays));
		WriteCookie(name, value, expdate);
	}