A few years ago I believe I could hit 'tab' from the Item to Find box to jump to the Search limit box, then hit enter to search. However at some point the tab key stopped working on the Purchases pane. Was this so you didn't accidentally tab to the 'purchase' button and buy something? Seems like the 'purchases' button could just be removed from the tab-list to avoid that problem. Or maybe tabbing is tabled for some other reason?