Shorter version of http://www.hagenburger.net/BLOG/Simple-HTML5-Fix-for-IE.html .

iefix.js

// original
for(e,l='article aside footer header nav section time'.split(' ');e=l.pop();document.createElement(e))

// original + moved pop
for(l='article aside footer header nav section time'.split(' ');;document.createElement(l.pop()))

// mine (not tested! might need some braces...)
// v1 (no globals)
var l=['article','aside','footer','header','nav','section','time'];for(var i in l)document.createElement(l[i])

// v2 (globals)
l=['article','aside','footer','header','nav','section','time'];for(i in l)document.createElement(l[i])

in returns the index, so it would result in 0, 1, 2, …

I think the last version is about as compact as I can get. Saves a few chars. Not sure if it's worth it, though...

For v1 l will also be in the global scope. For me, the new scope created by for is worth it :)

Btw. the split version is even a bit smaller, especially if you add more HTML5 elements.

True. Just figured out you can probably refactor "e" out of the original version. Just pop at createElement.

You may want to avoid endless loops.

Oh. Gotcha! Man, I need to test these things... :)