throttle on keydown (arrows) causes scrolling on Firefox
throttle on keydown (arrows) causes scrolling on Firefox

RonFIX/internet,arkegeomatica/presentaciones,iblancasa/BackendSI2-IV-slides,dulichan/kart-slide,RonFIX/internet,henrikingo/impress.js,henrikingo/impress.js,j2lb/Algo_Impress.js,impress/impress.js,matthewSorensen/himpress,StridersGonnaStride/myimpress,KathyReid/osdc-2015-presentation,impress/impress.js,schalkneethling/mozsa-jhb-opening,KathyReid/osdc-2015-presentation,j2lb/Algo_Impress.js,StridersGonnaStride/myimpress,arkegeomatica/presentaciones,StridersGonnaStride/impress.js2,StridersGonnaStride/impress.js2,dulichan/kart-slide