Merci! We have IE9 as a “standard” here at work, but honestly, most people download Firefox and/or Chrome. In recent XPages applications, when I check the stats in the web logs, I see more people access our applications using Chrome, Firefox, iPad, iPhone, Safari, and then IE. (Only once did I see Opera).
Once I finish this big prototype I'm doing, I'll see if I can get it all working in IE9 (ignoring IE8). If I do, I'll let you know soon, and I'll be sure to share the code with you, so you can add it for others.