The toolbar appears to the left of the map display area. It includes all of the tools you selected when designing your Web site as well as two buttons unique to the HTML Viewer: Toggle between Legend and LayerList, and Toggle Overview Map. Toggling the overview map adds or removes it from the top left corner of the map display area. Use the Toggle between Legend and LayerList button to switch between the layer list with active layer and visibility options and the legend with symbology.

The layer list appears to the right of the map display area. Click Active to make a layer active. The active layer is the layer against which querying, buffering, and so on will be performed.

Check a layer to make it visible; uncheck it to remove it from the map display. After making changes, you must click the Refresh Map button for your changes to be reflected on the map.