fix #340 : Scroll to zoom in IE9 and 10
fix #340 : Scroll to zoom in IE9 and 10

rlugojr/cytoscape.js,KonstantinShemyak/cytoscape.js,rlugojr/cytoscape.js,KonstantinShemyak/cytoscape.js,soomin-maeng/cytoscape.js,soomin-maeng/cytoscape.js