A proposed overhaul of juvenile justice laws could revolutionize the way Georgia treats abused and delinquent children, local officials told a state legislative panel Thursday. But, they cautioned, the reforms are doomed to failure without proper funding. The state House Judiciary Committee on Thursday unanimously approved a 243-page rewrite of the state’s juvenile code, but only after hearing dire warnings from prosecutors and a defense lawyer about the consequences of underfunding. The bill, among many other provisions, would require that local district attorneys prosecute cases in juvenile courts. It does not state, however, who would pay the bill.