1. Run HTMLCollection.html from attachement or from URL
2. Should alert value: 2
3. Try on IE 8.0 - works perfect
Created attachment 28965 [details]
I believe our behavior is correct as the getElementsByTagName function returns a NodeList and not a HTMLCollection, so modifying the prototype of HTMLCollection is not supposed to work.
OK, Konqueror, Opera, Chrome also return a a NodeList not a HTMLCollection.