This example demonstrates how to customize the markers used to display POIs on the POI layer. One way the POIs are customized is by specifying an external graphic inside the radius search options, in this example all POIs are using the green pin graphic. The rest of the customization is done inside the user defined "beforeMarkerAdded" function, where the content of each POI Marker's popup is dynamically set and a custom image is set inside the content of the ALK Technologies office POI marker.