Hello,

I've found a pretty bad bug in Mootools 1.3 that didn't exist in 1.2, that
affects IE6-7 users.

I've mentioned this on IRC and not everybody is able to reproduce it, but I
have had *several *people be able to reproduce it on different computers
running IE6-7, and it has been the root cause of a lot of user complaints
recently on Quizlet.com.

The follow pages "work" if you get an alert('sauce') popup.  They don't work
if you get a JS error.  (NOTE: Only IE6-7 are affected).

Simplified snippet of the bug:
On 1.2 (this work's fine, alert() msg) -> http://quizlet.com/moo2.htm
On 1.3 (this is broken in IE6-7, js error, no alert()) ->
http://quizlet.com/moo3.htm

Screenshots from browsershots.org:
On 1.3 (IE6, broken) ->
http://browsershots.org/screenshots/8dac1f27fb13eb66ae567b4cbe86bb1f
On 1.3 (IE7, broken) ->
http://browsershots.org/screenshots/5750950ec55a32673d4595bdabc9ffbf
On 1.2 (IE6, works) ->
http://browsershots.org/screenshots/ca52437ac6722955a23b7d729f994ce7
On 1.2 (IE7, works) ->
http://browsershots.org/screenshots/f9870b41a948a5c6521289e40e047c13

There's definitely a problem... (I've reproduced it on several different
real PCs with native IE7 installations, as well as a couple different
virtual machines with IE6).

What's the next step here?

Thanks,
Phil

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