Hi roly, this is exactly what I'm looking for. Unfortunately following the instructions doesn't change the picture.
When I click the red icon then shift, ctr, alt d at the same time nothing happens, so I tried adding extra images by copying and pasting the red icon and image, changing the reference in the head section of the placeholder then replaceing existing image with same named image as in the head code. Nothing just the existing copied picture. I hope I'm not going mad!!

Anything obvious I'm doing wrong do you think roly.

Thanks Mike