I am testing applications from VS2010 with IE9, all was working ok then all of a sudden the IE9 browsers decides strangely that it wants to be IE7. When I query navigator.userAgent, it comes up with the IE7 user agent. What’s up with that?!
Now the IE9 keeps thinking it IE7. I’ve never used IE7 before!?
Sometimes IE thinks a page will display better using an older Browser model or standard and will often switch to that. Press f12 and change the Browser mode and Document Mode back to IE9