When I go to tryhaskell.org, it still doesn't work. I believe the patch that you've mentioned only applies to when the user presses ALT+TAB, which won't help here.

I'd suggest you either do "if(e.altKey)return;" or "if(e.altKey && e.ctrlKey)return;". Both work for me.

EDIT: Hm, my suggested changes work in Opera, but they break Chrome... This is driving me crazy.