There’s been something that cropped up as of late thanks to a comment made by Sjoerd Visscher and expanded on further by John Resig here … it seems that by using document.createElement() for a previously unknown tag makes IE start parsing that tag differently. As John points out, you can even apply CSS rules for it.

It’ll be interesting to see what comes from this… no doubt someone is going to implement a mock HTML5 library that lets you make HTML5 behaving pages for modern browsers.

Oh, and by the way, the draft covering the differences between HTML 5 and HTML 4 is worth a look. Especially since the first public draft was released this week. ;)

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