Hilite Line of option box

[Jeff Honken]

I'm trying to use an option box and program it so I don't have to use
the mouse.  When I enter the box I'd like to use my down arrow and have
the options displayed in the pull down.  I can do this by:
 
on arrowKey theKey
  if theKey is "down" then
     
     click at the loc of btn "PIC" 
  
  end if
end arrowKey
 
 
The menu box pulls down but the problem is that it doesn't hilite the
first line in the choices.  I've tried something like
 
hitlite line 1 of me
 
but that seem to work.  Any help would be greatly appreciated.