IE6+, Firefox, Chrome, Safari, Opera. Suggestion to avoid falling into the trap of wasting a huge swath of time on fixing stuff for IE: test often. Really ofte

IE6+, Firefox, Chrome, Safari, Opera. Suggestion to avoid falling into the trap of wasting a huge swath of time on fixing stuff for IE: test often. Really often. Test your approach as soon as you can, so that if you find that your approach isn't working, you'll catch it early and can avoid using the same approach in the future and have to fix it everywhere once noticed.