PAC

function FindProxyForURL(url, host)
{
    var localip = myIpAddress();

    // If you're connecting to a local address connection is direct
    if (shExpMatch(url, "http://172.16.*"))
    {
        return "DIRECT";
    }

    // If your local address matches the form 172.16.x.x address proxy is used
    else if (shExpMatch(localip, "172.16.*"))
    {
        return "PROXY webgateway01.stbenedicts.local:9090";
    }

    // No proxy is used for any other network (or local address)
    else
    {
        return "DIRECT";
    }
}