У вашего броузера проблема в совместимости с HTML5
Pan & Tilts mech testing with MG946R Servo does not have 180 degree rotation more to 90 degree only T.T, will have to source for a new Servo PT mech - http://rc-suli.hu/tracker/ Antenna CPATCH12 - http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=63106&aff=563848