DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mousedown' }));
DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mouseup' }));
DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mousedown' }));
DygraphOps.dispatchCanvasEvent(g, DygraphOps.createEvent(clickOn4_40, { type : 'mouseup' }));