At sirzman.com the google maps api is not correctly implemented.
The build-in browser in Robomaker is much more "strict" than the internet explorer/firefox.
Version 1 (v=1) is used but gmap2 needs version 2. Because the enablescrollwheelzoom function is called you have tot use version 2.92 (latest) in stead of 2.s (stable version).
So during pageload you have to change &v=1 into &v=2.92
load page - unselect "use default options'- configure - tab pageloading - page changes (same for all pages) - replace text
see also http://code.google.com/apis/maps/documentation/index.html