Turns out that supporting the new AJAX based next/previous was too much of a pain to get working in old browers. So easiest thing is to have graceful fallback. New browsers get the AJAX with history updating. The old ones get just normal hyperlinks.
I did a quick hack the other day that worked, but now the library I was using is fixed as well, so I can get rid of the hack.
I'm not happy with how the images rotate once the article becomes visible, but if I apply the rotation before the image is part of the page it doesn't seem to stick. Either some jQuery weirdness or the browser allows the CSS to override the style attribute. I can't imagine that is the case though. Either that or I don't understand something important...
Seems I have been neglecting this site for a while and things broke. Well, actually the W3C now started validating meta tags and this CMS produces one that isn't listed. Not a big problem in the scope of things I guess.
Anyway that started me thinking that I should probably migrate this whole thing to something like Wordpress. Probably I will once I get my hosting upgraded and double check that they actually support it.
You might notice things look a bit different around here. I did warn this would happen, it just took longer than I thought. I do suggest that you upgrade your browser to something modern though. The latest Google Chrome, Firefox4 Beta, or IE9 Beta improve things quite a lot.