Yesterday, I came across a link to some Firefox Greasemonkey scripts for use with Mediawiki. (aside: I'd thought I'd seen the link via Twitter, but can't seem to find who said it there - I remembered it being from Scott Leslie, but it could have been through del.icio.us, or via a comment he made on a blog somewhere...)

Anyway, on scanning through the list, one jumped out at me. Not literally, but that would have been cool. The "Wikipedia Presentation" script sounded very cool. I'm a big fan of the wiki-as-presentation style, and this mashed up a Mediawiki page with the awesome S5 html presentation engine. By installing this script, it automatically enables viewing any Mediawiki page as a full-screen slideware presentation.

So, I installed it.

And it failed. The current version of the script has been updated for the current version of Mediawiki. I'm using an older version (because my server doesn't have the latest PHP bits to run the latest MediaWiki). Older Mediawiki pages use div elements to mark sections of a page, while newer versions use spans. After some extremely complicated editing of the Greasemonkey script (changing the 3 instances of "span" to say "div" instead) I was off and running. My modified (i.e., reverted) version of the Greasemonkey script is available here.

The cool thing, if you're using a Mac (and, really, what ISN'T cooler if you're using a Mac) is that you can install an application called Mira to enable using the Apple Remote to control Firefox. I bound the back/forward buttons on the remote to the left/right arrow keys, and I was navigating through a Mediawiki page as a full-screen presentation, using a wireless remote.

With the script installed, the wiki/presentation page for this presentation should show a "Start Presentation" link right beneath the article title.

There was one minor tweak I needed to make. By default, the content of the slide starts too far down the screen. When using a projector, you may be stuck at 800x600, and a bunch of that was sucked up by empty space at the top. So, I overrode one of the styles to make it start higher up. There are a couple of ways you can do this. If you have the Web Developer extension installed, just add a new User Style Sheet containing the style below. Otherwise, edit your Mediawiki skin (in my case, the file at /skins/monobook/main.css ) to add this: 

#wikipedia_presentation {
     margin-top: 0 !important;
}