TIGER is a dynamic map generating
system sponsored by the US Census Bureau. These provide street level maps of the
entire US.
The map is specified using the lat/lon of the upper left corner and the
height of the map, all in degrees.
<PARAM name="tigerMapLeft" value="80.3245">
<PARAM name="tigerMapTop" value="24.2454">
<PARAM name="tigerMapHigh" value="1.3">
The map can also be specified by defining the map center:
<PARAM name="mapCenterLon" value="80.3245">
<PARAM name="mapCenterLat" value="24.2454">
<PARAM name="tigerMapHigh" value="1.3">