Zooming at the end of a chart - CanvasJS

I am using CanvasJS to display some zoom-enabled line charts in my website. Selecting the area to be zoomed becomes really difficult if the user wants to select till the very end of the chart. The selection is lost when the mouse pointer moves over the right edge of the chart. Is there any way to prevent this? Either to automatically select till the end of the chart when the pointer moves over the edge, or to decrease pointer speed when approaching the edge?