LOS ANGELES (CBS) — Billboards advertise all sorts of things…drinks, vacations, popular TV shows…you name it.

But rarely have we seen them used, on a large scale anyway, to help track down criminals.

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Lamar Advertising of Los Angeles, beginning Thursday, is unveiling billboards all over the Southland. They will have one aim: to find the men responsible for beating Giants fan Bryan Stow at Dodgers Stadium on opening day.

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You won’t be able to miss the signs…there will be 300 in all.

Lamar’s vice president and general manager, Ray Baker, will go one better. He will donate a billboard to any city that can provide leads on the perps.

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The company issued a statement explaining why they wanted to help: “We, at Lamar Advertising of Los Angeles, are honored to assist the Stow family and the LAPD, as well as the Dodger and Giant organizations, in the capture and arrest of the suspects in the Attempted Murder of Brian Stow on Opening Day. It is our hope that our contribution will help put an end to this tragedy and start the healing process.”