I feel for you. When I wrote my first AJAX program, there was a lot of javascript controlling the UI. It was almost complete before I looked at it in IE for t

I feel for you. When I wrote my first AJAX program, there was a lot of javascript controlling the UI. It was almost complete before I looked at it in IE for the first time. Two days and 10,000 alert boxes later I had it working. It's a necessary evil. No one enjoys it, but if you don't make the fixes you'll prevent a lot of people (including myself, a FF user) from ever even trying your website. If I try it once and it completely breaks, I'm never going to come back. If there are one or two non-critical features that are creating all of the bugs, then perhaps remove them initially and add them once you've fixed the compatibility bugs.