anchor.diff:  
       var myLatlng = new google.maps.LatLng( <%= @latitude %>, <%= @longitude %> );
       var mapOptions = {
  -      zoom: 16,
  +      zoom: 14,
         center: myLatlng,
         mapTypeId: google.maps.MapTypeId.ROADMAP,
       }
  
positive.code: 
  <img src='/assets/photo_metadata_1_400.jpg' alt='photo of snow geese in Skagit Valley, WA, USA'>
  
  <br>
  
  <div id="map_canvas"></div>
  
  <br>
  
negative.code: 
  <style>
    #map_canvas {
      width: 400px;
      height: 400px;
      border: 1px solid black;
    }
  </style>
  