Add toggleStreetView(); in google_map_code_listing.js at line 161 (v 1.11.2) and it should do the trick.

You have it like this

oms.addListener('unspiderfy ', function(markers) { }); */

} /////////////////////////////////

end initialize ///////////////////////////////////////////////////////////////////////////////////

toggleStreetView()

Move it up , before }

Should have something like

oms.addListener('unspiderfy ', function(markers) { }); */

toggleStreetView();

} /////////////////////////////////

end initialize ///////////////////////////////////////////////////////////////////////////////////