You can't just put some perl code in an html page and expect it to run in your browser. You'd need a plugin for that - and I know no-one who has one installed.

If you want to run the code on the server, there are plenty of options. If you want to run it just like that, I think PerlScript from activestate does work like that - but on IIS only as far as I know. If you want to allow for a slightly differnt syntax, you're probably better off using some templating module. There are gazillions of those on CPAN.

update: just an example: http://www.masonhq.com/