Change this to a widget

Do what we can in the user code to make the wiki as valid as possible. Even if the wiki code itself is not valid, when they finally do become valid, it would be easier for us since our code is already valid ~小太郎 ^TALK_CONTRIBS 2011:10:11:22:39 (Tuesday)

I don't think it is possible to make it valid using iframes.

Hence my suggestion of Ajax.

Using AJAX defeats the purpose of all of your JavaScript fallback code.

Remember, using my method, we wouldn't be using iframes anymore, but objects ~小太郎 ^TALK_CONTRIBS 2011:10:11:23:03 (Tuesday)

That would make the main page validate but not the included page.

The included page is counted as a completely different page, so it isn't really "de-validating" the wiki ~小太郎 ^TALK_CONTRIBS 2011:10:11:23:31 (Tuesday)

IMO, if you're going to worry about validating in the first place, you should be worried about *everything* validating. But my line of caring has crossed, so it's up to you guys.