anchor.diff:    var activeInfoWindow;
     var hydrantIds = [];
     function addMarker(hydrantId, point, color) {
  +    if($.inArray(hydrantId, hydrantIds) != -1) {
  +      return;
  +    }
       var image = new google.maps.MarkerImage(color,
         new google.maps.Size(27.0, 37.0),
         new google.maps.Point(0, 0),
  
positive.code:         $('#address').addClass('error', 500);
          $('#address').focus();
        } else {
          center = new google.maps.LatLng(lat, lng);
          map.setCenter(center)
          map.setZoom(18);
          var i = 0;
          $(data).each(function(index, hydrant) {
            hydrant = hydrant.hydrant;
            if($.inArray(hydrant.id, hydrantIds) != -1) {
              // continue
              return true;
            }
            setTimeout(function() {
              point = new google.maps.LatLng(hydrant.lat, hydrant.lng);
              color = '/images/markers/' + (hydrant.user_id ? 'green' : 'red') + '.png';
              addMarker(hydrant.id, point, color);
            }, i * 100);
            i += 1
          });
        }
      });
    }
  
negative.code: $(function() {
    var center = new google.maps.LatLng(42.358431, -71.059773);
    var southWest;
    var northEast;
    var bounds;
    var zoomLevel = 15;
    var myOptions = {
      center: center,
      mapTypeControl: false,
      mapTypeId: google.maps.MapTypeId.ROADMAP,
      panControl: false,
      zoom: zoomLevel
    };
    var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    var activeHydrantId;
  