Thanks for the reply. Oddly there is no missing image icon. The alt text seems to flash up then disappear. I thought there was some CSS or js weirdness going on but it makes no difference if I extend 'layout.html', ie use no CSS and js.
Firebug gives a preview of the image in question so Firefox clearly has found it, just won't show it. Re recursive select, that's next on the todo list after displaying a simple image!
