function FindProxyForURL(url, host)
    {
        if (!isResolvable(host) ||
            isPlainHostName(host) ||
            isInNet(host,"127.0.0.1","255.0.0.0") ||
            dnsDomainIs(host, ".intern") ||
            dnsDomainIs(host, ".local"))
        {
            return "DIRECT";
        }
        else {
            return "PROXY webcache:3128; DIRECT";
        }
    }
