validation : prevent dispaling error messages

validation : prevent dispaling error messages

Is there a simple way to prevent the generation of the message ?

I have already poped up the messages.

I tryed to set label.error to display:none in css but I think it's too early.

Any help would be appreciated

PS. in FF and Chrome, I just set the messages to '' but in IE 6 even if it's empty, it is displayed deforming ny page. What I want is to get rid of the message