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: $(function() {
    var latlng = new google.maps.LatLng(42.358431, -71.059773);
    var southWest;
    var northEast;
    var bounds;
    var myOptions = {
      center: latlng,
      mapTypeControl: false,
      mapTypeId: google.maps.MapTypeId.ROADMAP,
      panControl: false,
      zoom: 15,
      zoomControl: false
    };
    var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    var activeHydrantId;
  
negative.code:         $('#address').addClass('error', 500);
          $('#address').focus();
        } else {
          var northMost;
          var eastMost;
          var southMost;
          var westMost;
          var i = 0;
          $(data).each(function(index, hydrant) {
            hydrant = hydrant.hydrant;
            if(!northMost || northMost > hydrant.lat) {
              northMost = hydrant.lat;
            }
            if(!eastMost || eastMost > hydrant.lng) {
              eastMost = hydrant.lng;
            }
            if(!southMost || southMost < hydrant.lat) {
              southMost = hydrant.lat;
            }
            if(!westMost || westMost < hydrant.lng) {
              westMost = hydrant.lng;
            }
            setTimeout(function() {
              point = new google.maps.LatLng(hydrant.lat, hydrant.lng);
              color = '/images/markers/' + (hydrant.user_id ? 'green' : 'red') + '.png';
              addMarker(hydrant.id, point, color);
            }, i * 100);
            if($.inArray(hydrant.id, hydrantIds) == -1) {
              i += 1;
            }
          });
          southWest = new google.maps.LatLng(southMost, westMost);
          northEast = new google.maps.LatLng(northMost, eastMost);
          bounds = new google.maps.LatLngBounds(southWest, northEast);
          map.fitBounds(bounds);
        }
      });
    }
  