I’ve built a map using the GMaps API with custom markers. On my PC (Chrome and Firefox) it looks correct, like this:

But on my colleagues PC with exactly the same versions of the same browsers and on the same network it looks like this:

In addition, on my Mac in Opera it also looks like the second image.
Has anyone run into this issue before? And is there a fix?
Actually, Marker path is not correct. Once check in firebug.Path is showing as
localhost/archers/assets/images/icon.png
But actual path is
http://archer.jacksleight.com/assets/images/icon.png
Checked in Firebug: