The idea is that the viewer can mouse over any of the lines in the
plot on the right and the Google Earth view will move to display
that city.
Note that when you click on the Google Earth panel and generally
interact with that panel directly, that takes the "focus".
When you later move the mouse over the HTML document or
the SVG plot, you will have to explicitly click on
that are to have events triggered.
Duncan Temple Lang
<duncan@wald.ucdavis.edu>
Last modified: Mon Jan 17 17:03:17 PST 2011