Click function for countries and States. (Only works if the main.htm is browsed from a server not as a local file: see www2.hawaii.edu/~agon/usaimpexp/main.htm) Data script added to main. Changed position of world map.

A listener has been added to the map functions to get the country
(World map) or state (USA map) when clicking on it in the map. (For now
only printed in Console)