For years now I've wanted a browser to provide a way to search inside of list boxes. Why? When writing web log entries the ability to search in a list box can make it a lot faster to go fix typos I see on my web site posts. I just updated Mozilla SeaMonkey (which is patterned after the suite approach of classic Netscape with the email built into the browser) to v1.0.1. Well, by accident I wasn't paying attention and tried to search on a web page where I had a list box with lots of text in it and low and behold. The search took me to a line in the listbox. Great!
Anyway, check out the latest version of SeaMonkey. It keeps getting better. If you have been using classic Mozilla v1.7.x or earlier SeaMonkey is basically the upgrade to that.