New York City is seeking to curb abuse of potentially addictive and deadly painkillers such as Oxycontin and Vicodin with new limits on how widely the drugs should be prescribed. Emergency departments at New York's public hospitals will only prescribe a three-day supply of opioid painkillers, won't refill lost or stolen prescriptions and shouldn't prescribe long-acting versions of the drugs, according to voluntary guidelines the city issued today.