Win XP SP2 (Home) – it started in IE6 (but it lasted to IE7)
(FYI Yosemite – I do know how to turn it off simply – Disable display Script Errors in Internet Options.)
It doesn’t appear to be a biggie, but I figured some smart folks would want to take note of it … if it wasn’t just me. I didn’t see it in Opera 8 or 9 or Netscape 8 in either IE or Firefox render mode, but I do not use or configure those browsers to troubleshoot pages, just to see what pages look like to the average geek. Firefox 1.5 didn’t show it either – same comment – I run those without any extensions (beyond my Roboform support plugin.)
It would be easy to say this is just IE weirdness, but I suspect something more may be awry (and I thought it worth a mention.)