I've rewritten much of my Dingo system to make use of objects and give the program better structure. It will also make it easier to "port" to Internet Explorer when I get to that point. Internet Explorer will likely require an entirely separate stylesheet and a lot of helper classes, etc., and I've already implemented a few custom functions to cater to Internet Explorer's broken proprietary event model (although it's still having plenty of problems). It looks like it will be as difficult to cater to IE7 as it is for IE6, so I'll probably support both if either.