FFM works exactly as described. However, I uninstalled it again because (a) I'd have to undo the habit of a lifetime, clicking on a field after I mouseover, and I need that habit for any computer I use, (b) it didn't seem to help my productivity, (c) because I move my cursor elsewhere after clicking, so that it's not in the way of what I'm entering, it often lands in another field, moving the focus, and (d) I was constantly opening menus and dropdown lists I didn't want.