Phone number validation...

Is there a way to allow the user to input their phone number how they see fit and have it format it once it has been entered to your specs? For example, the user could input any of the following:

     5555555555

     555-555-5555

     555.555.5555

     (555) 555-5555

     (555) 555.5555

And it would format to display

     (555) 555-5555

Would it be a script or is there a way to do it within the validation pattern? Thanks!