У вашего броузера проблема в совместимости с HTML5
CRI's tutorial on using On Balance Volume (OBV) to confirm price and momentum. On Balance Volume (OBV) Slide show presentation: https://docs.google.com/presentation/d/1zyvKRo0nVXAHHSTKS9qKilgJVTwnC04i8p1uwqx-qG4/edit#slide=id.p