The Vikings have added pages to their playbook for rookie wide receiver Percy Harvin, their first-round selection. Offensive coordinator Darrell Bevell said there are 20 or 30 plays in their scheme designed specifically for the fleet-footed Harvin. "We're up there trying to diagram everything we can," Bevell said. "We're looking at things we can do. We're looking at things other teams have done and trying to get the ball to our playmakers."