Yes, I see what you mean. It seems to be because you have no text included for the link. Try
a({-href => 'http://wrights/index2.html'},"Link")
That seems to work better. However, one would think it would work without the text. I've had trouble with the HTML producing functions in CGI.pm myself for various reasons.
chas
(I checked with the non OO setup, but that shouldn't make a difference.)
(Update: Oh, sorry, I guess I didn't realize that the image was part of the link (because the closing parenthesis was there)...bmann seems to have fixed things.)