PITTSBURGH (AP) _ The booing doesn't upset him. His quarterback being showered with a beer? That bothers Pittsburgh Steelers coach Bill Cowher.

Cowher says any fan who throws objects at a player, as a spectator did by dumping a beer on Kordell Stewart following Sunday's 23-9 loss to New England, should be punished.

Stadium security personnel apparently identified the fan, but charges were not pressed.

``Boos? That's a right any fan has,'' Cowher said. ``They're showing their frustration, and that's fine. But you've crossed the line when you start throwing things. Something like that shouldn't go unpunished.''

Stewart said fans won't run him out of town ``like they did Neil O'Donnell'' and that he would be around Pittsburgh ``for a long time.''

O'Donnell, who preceded Stewart as the Steelers' quarterback, left following the team's Super Bowl appearance in January 1996 to sign a $25 million contract with the New York Jets. He now plays for Cincinnati and is out for the year with a broken hand.