GMaps.prototype.checkGeofence = function(lat, lng, fence) {

  return fence.containsLatLng(new google.maps.LatLng(lat, lng));

};



GMaps.prototype.checkMarkerGeofence = function(marker, outside_callback) {

  if (marker.fences) {

    for (var i = 0, fence; fence = marker.fences[i]; i++) {

      var pos = marker.getPosition();

      if (!this.checkGeofence(pos.lat(), pos.lng(), fence)) {

        outside_callback(marker, fence);

      }

    }

  }

};

