I have a need to apply a custom formatter to a field. The
format should be 000-0-000-000 where the 0's represent any number.
I want the user to be able to enter just the numbers without the
dashes, then when they FocusOut of hte field, it gets formatted
correctly. If they go back into the field to edit it, I would like
it to return to just the numbers without the dashes.