remove callback function implemented, small code refactoring
remove callback function implemented, small code refactoring

istrel/basisjs,basisjs/basisjs,fateevv/basisjs,tyanas/basisjs,tyanas/basisjs,fateevv/basisjs,smelukov/basisjs,smelukov/basisjs,fateevv/basisjs,istrel/basisjs,istrel/basisjs,smelukov/basisjs,tyanas/basisjs,basisjs/basisjs,basisjs/basisjs