redhat 7.1 choosing timezones interface

[Ronnie]

Hi, id like to create something like what redhat has when one chooses the
timezone during the installation process.   For those who dont know what
im talking about,  there is a green arrow which points to the nearest city
on the map depending on where the mouse is.   One doesnt necessarily have
to be on the exact spot to click/choose the city but whereever your arrow
is pointing to, is the city youre choosing.  Oh yeah this is for a school
project used for a similar purpose of choosing a country/city.

thanks