function FindProxyForURL(url, host)
{
  if (isPlainHostName(host)  ||
    isInNet(host, "192.168.1.0", "255.255.255.0") ||
    isInNet(host, "127.0.0.0", "255.0.0.0"))
    return "DIRECT";
  else
    return "PROXY 192.168.1.100:3128; DIRECT";
};