removing focus

[Dr.John R.Vokey]

Seems like it should be simple, but:
How does one remove the focus from a field *without* setting it to 
another?  For example, when the card with the field in question is 
first opened, the focus is apparently not on anything (i.e., the field 
has to clicked on to get the focus).  How do I return the field and 
card to that state?
- JRV
--
There are 10 kinds of people:  those who understand binary, and those 
who don't