broken link to images in advanced guestbook

Hi, I just installed an advanced guestbook on: www.duggleby.info/guestbook

Everything seems to be OK, except for the lack of graphics which show as broken links (x).

I have checked my config files, and the images on the server, and cannot see where the problem is, could you help?

Regards, Greg@duggleby.info

you followed the instructions for setting the base_url a bit to closely
change it to http and not htpp