jquery/sizzle — pull request #213 by orkel (2013-05-26 10:50:40+00:00)
Title: Fix jQuery #13936: iframe reload should not affect Sizzle

If iframe document is assigned to "document" variable and if iframe has been reloaded,
IE will throw "permission denied" error when accessing "document" variable.

I see two way of fixing this ticket: or event listener or try...catch statements, i chose the first one.