You can install several different versions of Microsoft Internet Explorer concurrently on Windows. Finally I could see how awful my site looked in IE5 — and the truth wasn’t pretty.
I have seen a method of changing the IE title bar to include the version number. I didn’t like this because you had to download a hacked DLL and edit the registry: call me paranoid. Here’s a much simpler way, using a bookmarklet.
Just drag the following bookmarklet to your Internet Explorer Links bar:
Whenever you need to know the version of IE you’re running, just click your new Version button. Quick and easy.