I've put up a sample document that demonstrates a problem I'm experiencing at this URL:

This issue is related to the small orange and grey indicator icons on the page. When you roll over the icons, a tool-tip type message is supposed to pop up next to it. This works, but the message is partially hidden by the blue floated block to the right. I've played with z-index settings, but it doesn't seem to do anything in IE. Works in Mozilla just fine.

Any ideas how to get this to work in IE too?