I recently downloaded the Microsoft Internet Explorer 7 Beta 2 and to my surprise, one of my web site designs completely falls apart in IE 7 :-( In my quest to figure-out the problem, I figured the first thing I need to know is whether or not IE 7 is displaying the web site in “quirks-mode” or not. The browser doesn’t display this information anywhere (that I’m aware of), but I found a quick way to display this information. In your browser’s address bar, paste the following code:
javascript:alert(document.compatMode)