I have an html5 website, and I want to make sure it gracefully degrades if a browser doesn't support html5. I've googled for hours on end, and I've only found 1 Firefox extension that doesn't even work anymore. Can anybody suggest something to help me out here? Thanks.
If you are running Windows, get http://www.my-debugbar.com/wiki/IETester/HomePage
IE Tester allows you to see your site in all versions of IE.
If it degrades gracefully in IE, it'll degrade gracefully anywhere.