JosÃ AntÃ nio Martins GalvÃ # o ( born 8 July , 1982 ) is a Brazilian football player . JosÃ AntÃ nio Martins GalvÃ # o or simply GalvÃ # o ( born July 8 , 1982 , in Lins , Brazil ) is a Brazilian striker who plays for Ventforet Kofu .