The NFIS maps page is fully interactive. You can zoom in, zoom out, and pan around the map by clicking on it and dragging. The controls for zooming in and out are on the top left of the map. Using the mouse scroll wheel while hovering over the map will zoom the map in/out.
Some locations on the Map hold information. To view this information, simply click on the map and the information will be displayed below, if available.
The layer selector on the top right of the map allows you to change the order, toggle on/off, and change opacity of all layers associated with that map.
The legend button will display a legend graphic for all layers currently VISIBLE on the map, if available.