GroundOverlay not working in Firefox/IE on Windows (Google Maps API v3)

[Coen de Jong]

This is the test website : http://labs.shifthappens.nl/vagabond/pilot

Problem: when viewed with Firefox (latest) / IE (at least up to 8) on Windows, you don't see GroundOverlays (black arrows from marker to marker). On every available browsers on my Mac I do see them (Safari, Chrome, Firefox even, Opera even, all latest versions).

How can this be? That IE has problems I understand, but FF? I mean, it should not differ that it is Mac or Windows, or?

Here is a reference image if you don't have Mac / can't see it:http://dl.dropbox.com/u/45487/reference.png

Can someone explain this to me? Firebug doesn't throw any errors in the console either.

[geoco...@gmail.com]

Chrome says:
Oops! Google Chrome could not connect to localhost

on these images:
http://localhost/vagabond/branches/PILOT/images/arrow-right-left.png

-- Larry

[Coen de Jong]

Oh no! It's the localhost failure! I feel so embarrassed now... I even thought of that possibility but didn't think it completely through I guess. Thanks!