Whether you use Firefox or IE for your everyday browsing does not matter to test this bug. As long as you have IE installed on your system (every windows user does), you will be able to reproduce it with the code in my first post. It doesn't require for you to open any browser, it is all done programmatically and hidden.
Note that you don't need to use that code, any collection that $comval is able to retrieve where the item method works on, can show you $comval's inefficiency.
