What happened to the map of the flight route display

Lately, last couple of weeks or so, the map no longer displays when an inquiry of a flight is made. Just a blank square shows up where the map used to be.

We made some framework changes to the site last week, but the maps are still there.

What browser are you using and are any errors reported?

I have the same problem when using Firefox. It was ok until a week ago.

Works fine in Chrome and IE8