Show ingress portal range circle in http://www.ingress.com/intel map

ingressPortalSrength.js

/**
 * @desc Inject ingress portal range circle
 * @author Misha M.-Kupriyanov https://plus.google.com/104512463398531242371/
 * @link https://gist.github.com/5224508
 */

//More info on ranges http://ingressfieldguide.com/content/portals-linking

//goto http://www.ingress.com/intel?latE6=48740985&lngE6=9253478&z=19
// open your console and paste this code

var showPortalRange = function( lat, long, level) {

var levels = {
1:160,
2:2560,
3:12960,
4:40960,
5:100000,
6:207360,
7:384160,
8:655360,
};

new google.maps.Circle({
        center: new google.maps.LatLng(lat, long),
        radius: levels[level],
        strokeColor: "#FF0000",
        strokeOpacity: 0.8,
        strokeWeight: 2,
        fillColor: "#FF0000",
        fillOpacity: 0.35,
        map: U
    });
};

//show portal range circle for portal Lv4 in Ruit, Germany
showPortalRange(48.740985, 9.253477999999973, 4);

intel map seems to have been changed since this was made, throws an error now.

InvalidValueError: setMap: not an instance of Map