Thanks Sam. No, I realize that Firefox doesn't have to be the only browser. We primarily use IE so if there is a "default browser" here I guess it would be that. There are a few people even using Chrome.
This particular user has been using IE10 for some time. The problem is that when she uses the test system she has to switch over to compatibility view for some reason in order for things to work correctly. When in production she doesn't need compatibility view for portal to work. She's a VP and is very frustrated having to switch back and forth all the time enabling and disabling CV.
She also uses (and must use) Firefox for some other applications she uses a lot. She said that if I can get the portal to work in Firefox (with the status bar working), she'd just as soon as always use Firefox.
That's kind of a long answer to a short question but that's how it is. Thanks for your input!