Can Combo 'onChange' event be prevented or cancelled

Please can you tell me whether I can stop an ‘onChange’ event for Combo by returning ‘false’ or some other way?

Also the ‘onChange’ seems to be firing twice. Once when you click on the combo box and then when you make the selection. It should only fire when you make the ‘selection’.



We have not reproduced the issue in the “Events” combo sample: … vents.html

Could you privide the sample that allows to reproduce the issue