This question is not about my own computer, but a shared computer that I sometimes manage. It seems one of the users changed some setting so now every webpage you visit looks just plain wrong. I've included a screenshot here of the Google homepage, but it's doing this kind of thing with any and every website I visit.

As you can see, everything looks really "boxy"; it's got borders where it shouldn't, and so on. Does anyone know what this user might have done to have caused this change in IE? And what I need to do in order to change things back? Thanks very much!