To move the map, click and drag on it. To zoom into the middle, press the + button at the top left corner of the map. You can also zoom in and out using the scroll wheel of your mouse.
You may search for an area or stop by clicking the button at the bottom left of the map.
Clicking the arrows at the top right of the map will open the map larger to cover the web page. Clicking it again will restore it to its original size.
If you would like to reset the map, simply click "Close Map" and re-open it with the map button again.