Query the location of a customer with MaxMind and produce a popup

custom.js

// If country is AU, do nothing.
// If country is NZ, a NZ-specific pop-up
// If any other country (not AU or NZ), a generic international pop-up

var nzPopup = function() {
	// Code to pop up the NZ popup
};
var internationalPopup = function() {
	// Code for everyone else
};

var queryCountry = (function() {
	var onSuccess = function(geoipResponse) {
		var country = geoipResponse.country.iso_code
		if(country != 'AU' && country != 'NZ') {
			internationalPopup();
		}
		if(country == 'NZ') {
			nzPopup();
		}
	};
	var onError = function(error) {
		var country = none
	};
	return function() {
		geoip2.country(onSuccess, onError);
	};
}());
queryCountry();

header.html

<script src="//js.maxmind.com/js/apis/geoip2/v2.1/geoip2.js" type="text/javascript"></script>