A bit out of Perl context, but anyway... You could do it, but as others has pointed out, SSI is a better way to go. I've used the following technique to do it:

1. You'll need frames, and you'll need to stay in the same domain or javascript signing/tainting will stop you.
2. Frame 1 uses javascript (frame2.document.location) to load a html document generated by a cgi script.
3. The cgi generated document has a form with a <textarea> which contains the html tags that you want to print.
4. Grab the contents of the textarea and do what you like with them.

A bit messy but it works. You can have a look at a toy that vroom graciously granted me to have on my home node (yes, I actually asked). It uses Javascript to automagically surf the PM site. It grabs links from another window and makes the window change location.

/brother t0mas