I use a wonderful service for saving text to be read later, instapaper.com. It's gotten more wonderful as time has gone on and other applications/service's have gained the ability to save links/articles/webpages there for me to pick up later.

So I've got some js I've written to update a couple of <select> lists in a form, and it was all working fine for me (under Safari.) John happened to mention it wasn't working for him under Firefox, so I fired up Firefox and took a look. Could reproduce it perfectly, changing the first popup was populating the second one, ...