Fixed a bit of unintentional scrolling in Chrome.
Fixed a bit of unintentional scrolling in Chrome.

beni55/glsl-sandbox,RobertoMalatesta/glsl-sandbox,QingchaoHu/glsl-sandbox,mrdoob/glsl-sandbox,mrdoob/glsl-sandbox,beni55/glsl-sandbox,QingchaoHu/glsl-sandbox,beni55/glsl-sandbox,CortesHub/glsl-sandbox,mrdoob/glsl-sandbox,RobertoMalatesta/glsl-sandbox,oresmus/glsl-sandbox,CortesHub/glsl-sandbox,mrdoob/glsl-sandbox,oresmus/glsl-sandbox,RobertoMalatesta/glsl-sandbox,QingchaoHu/glsl-sandbox,oresmus/glsl-sandbox,CortesHub/glsl-sandbox