Can't scroll articles at on-line newpaper website

I'm working with the startribune.com technicians on this one, but thought it worth checking with the discussion boards. I have a MacBook Pro with Lion, Safari 6.0.1. and Firefox 15.0.1. I regularly view the articles in startribune.com, but a few days ago I found I can no longer scroll any of the articles with either Safari or Firefox. It just applies to this website. Other sites scroll fine. I can scroll the home page, but as soon as I go to a specific article, I can't scroll with the trackpad, nor does the scroll bar show up, even thought my preferences are set to "Always." As I said, I don't have any trouble scrolling other websites. Incidentally, I had the same problem with a Windows laptop I use for work, but that has now started working normallly again. I have not installed any system or software upgrades lately. I'd like to be able to give the technicians some idea as to what to look for, but I'm stumped. So, thought someone out there may have experienced a similar problem.

Thanks.