autoproxy pac file for company and home network

autoproxy.pac.js

function FindProxyForURL(url, host)  {
  var lhost = host.toLowerCase();
  var ip = myIpAddressEx();
  // exclude localhost and some specific range on company network (123.45.*)
  if ((lhost == "localhost") 
        || (shExpMatch(lhost, "localhost.*")) 
        ||  (lhost == "127.0.0.1") 
        || shExpMatch(lhost, "123.45.*")) {
    return "DIRECT";
  }
  var my_addresses = ip.split(";");
  var found = false;
  // check if the ipv4 or ipv6 addresses contain the company network ip's (123.45.*)
  for(var i=0; i < my_addresses.length;++i){
    if(isInNet(my_addresses[i], "123.45.0.0","255.255.0.0")) {
      found = true;
      break;
    }
  }
  if(found) {
    // use company proxy
    return "PROXY 123.45.67.89:8080";
  }	 
  else {
    //use direct connection
    return "DIRECT";
  }
}