Firefox 2.0. Admittedly this is an older version and I don't expect full (any for that matter) support for it. Then again this is the FIRST website I've come across where the Firefox version has been an issue. But as I look at the page now, I see that you (or your predecessor) included javascript to (choke) 'document.write' the html for the perl version selector? Since when did it become cool to replace plain old html with a javascript include to write plain old html? It doesn't add a single scrap of add functionality that wasn't already available with standard html. No wonder my older browser chokes on it. Good luck when the next browser release optimization takes a different approach to what order it renders page parts/javascript and you find your select box hanging out the end again.

Sorry if I sound harsh (and I know I do), but it's not my lot in life to fix, or assist in fixing, perldoc (my time is already filled contributing to other projects no less important than perldoc). Since you've taken on the task of spicing up the layout, it's now your lot in life to fix it. As a perldoc user, I'm telling you there are usability issues with perldoc, none of which were addressed by your update. If anything your update put new usability issues onto the site and made existing issues more obvious.