We are converting an existing Windows application to run on the Web. The application uses very large lists (100's) in which each item has its own radio button. Items in the list are inserted in alphabetical order. Users spend much of their day using the application, so the application is keyboard-centric by design. Reloading the whole list every time an item is added is undesirable as a workaround. The workaround is, sadly, to use IE, our target platform. For our own purposes we prefer and would like to recommend using Firefox to our clients.