Replace OSM markers with recolured versions of the Leaflet marker

app/assets/javascripts/map.js.erb

@@ -115,9 +115,11 @@ function createMap(divName, options) {
 function getUserIcon(url) {
   return L.icon({
     iconUrl: url || <%= asset_path('marker-red.png').to_json %>,
-    iconSize: [19, 25],
-    iconAnchor: [11, 26],
-    popupAnchor: [-1, -20]
+    iconSize: [25, 41],
+    iconAnchor: [12, 41],
+    popupAnchor: [1, -34],
+    shadowUrl: <%= asset_path('images/marker-shadow.png').to_json %>,
+    shadowSize: [41, 41]
   });
 }