anchor.diff:            $('#address').parent().removeClass('error');
             var i = -1;
             $(data).each(function(index, thing) {
  -            if($.inArray(thing.id, thingIds) == -1) {
  +            if($.inArray(thing.id, thingIds) === -1) {
                 i += 1;
               } else {
                 // continue
  
positive.code:   var isWindowOpen = false;
    var thingIds = [];
    function addMarker(thingId, point, color) {
      if(color == 'green') {
        var image = greenMarkerImage;
      } else if(color == 'red') {
        var image = redMarkerImage;
      }
      var marker = new google.maps.Marker({
  
negative.code:         },
          success: function(data) {
            // Prevent race condition, which could lead to multiple windows being open at the same time.
            if(infoWindow === activeInfoWindow) {
              infoWindow.setContent(data);
              infoWindow.open(map, marker);
              isWindowOpen = true;
  