disabling JComboBox options

From: hilz (hilz_at_noway.com)
Date: 06/29/04 

Date: Tue, 29 Jun 2004 19:00:38 GMT

Hi,
is there a way to disable some combox dropdown options.
lets say i have a combobox with a list of items in it as follows:

region 1
region 2
region 3
region 4

and i want some of those items to be disabled in the combobox drop down,
such that the disabled ones are visible but the user cannot pick them.

is this possible?
thanks
hilz