I think if you require only one to be selected you are probably better off with radio buttons. They are specified to allow only one.
http://htmlhelp.com/reference/html40/forms/input.html "The radio and checkbox input types provide switches that can be turned on and off by the user. The two types differ in that radio buttons are grouped (by specifying the same NAME attribute on each INPUT) so that only one radio button in a group can be selected at any time. " On Mon, Nov 17, 2008 at 1:59 PM, shapper <[EMAIL PROTECTED]> wrote: > > Hello, > > I have a group of 8 CheckBoxes and I am validating so the user selects > at least on of the CheckBoxes. > > It is working fine but now I would like a new rule that: > - Requires that one of the first 3 checkboxes to be selected ... and > only one! > > Is this possible? > > Thanks, > Miguel
