Can someone tell me why HTTrack sometimes uses external.gif in an external
link, rather than external.html?  Eg:

external.gif?link=www.website.com.au/member.asp?id=123

Hmm, actually, this is the only link which is an ASP page (and has a
querystring).  All the other external links point to normal HTML.

Is there a way I can fix this?  I don't see why a GIF would be used at all,
because if the link is external then no matter what it is, I should be able to
click on it ;-)