function FindProxyForURL(url, host)
{
  if (isInNet(host, "130.199.4.0", "255.255.255.0") ||
      isInNet(host, "130.199.5.0", "255.255.255.0"))
    return "PROXY 192.168.1.4:3128; PROXY 192.168.1.3:3128"; 
  if (isPlainHostName(host) || 
      dnsDomainIs(host, ".bnl.gov") || 
      dnsDomainIs(host, ".bnl.local") || 
      isInNet(host, "130.199.0.0", "255.255.0.0") ||
      isInNet(host, "192.168.0.0", "255.255.0.0")
     )
    return "DIRECT";
  else
    return "PROXY 192.168.1.4:3128; PROXY 192.168.1.3:3128"; 
}