I learned a bit more about this here:
http://stackoverflow.com/questions/6348959/how-to-disable-compatibility-view-in-ie
You can force your site to
not be viewed in compatibility mode by inserting this:
<meta http-equiv="X-UA-Compatible" content="IE=9; IE=8; IE=7; IE=EDGE" />
I've placed this at the top of home.tpl, but I would appreciate hearing from any of the more experienced forum members if this is the correct place?