In order to properly view the maps in this exercise,
it is first necessary to allow the special Verisign download feature
to auto-install the map's roll over plug-in.
For best performance make sure that you have the latest version of Shockwave
which can be downloaded from the following address:
http://www.macromedia.com/downloads/.
Once the plug-ins are installed, you no
longer need to repeat this process.
Roll over the color blocks in the map legend to highlight various statistical areas.
Click on any (or all) color blocks to maintain the highlighting of those areas.