anchor.diff:                }
   
               );
  -      //map.events.register("zoomend", this, zoomEvent);
  +      map.events.register("zoomend", this, zoomEvent);
         map.events.register("moveend", map, updateLocation);
   
         var highlightControl = new OpenLayers.Control.SelectFeature(layerVector, {"hover": true, "highlightOnly": true, "renderIntent": "highlight"});
  
positive.code: 
  
  <script id="changeset_list_template" type="text/x-jsrender">
  Visible changesets <i>(limit = 100)</i>
  <br /><br />
  <ul style="list-style-type: none; padding: 0; margin: 0; font-size: smaller">
  {{for features}}
  
negative.code:                    "default": {'strokeWidth': 4, 'strokeColor': "green"},
                     "highlight": {'strokeWidth': 4, 'strokeColor': "blue"}
                   }),
                   visibility: false
              });
              map.addLayer(layerVector);
  
  