Fix keyscroll.

Packages/ohif-viewerbase/client/lib/switchToImageRelative.js

@@ -1,4 +1,7 @@
 import { viewportUtils } from './viewportUtils';
+import { cornerstoneTools } from 'meteor/ohif:cornerstone';
+
+const scroll = cornerstoneTools.import('util/scroll');
 
 /**
  * This function switches to an image given an element and
@@ -11,5 +14,5 @@ import { viewportUtils } from './viewportUtils';
  */
 export function switchToImageRelative(distanceFromCurrentIndex) {
     var element = viewportUtils.getActiveViewportElement();
-    cornerstoneTools.scroll(element, distanceFromCurrentIndex);
+    scroll(element, distanceFromCurrentIndex);
 }