         // clamp the values here
         newHSP = Math.min(Math.max(newHSP, -viewportWidth), maxWidth+viewportWidth);
         newVSP = Math.min(Math.max(newVSP, -viewportHeight), maxHeight+viewportHeight);
-		
+        
         viewport.horizontalScrollPosition = newHSP;
         viewport.verticalScrollPosition = newVSP;
     }

    //  Touch scrolling methods
    //
    //--------------------------------------------------------------------------
	
    /**
     *  @private
     *  Add touch listeners

                var scrollStartEvent:TouchInteractionEvent = new TouchInteractionEvent(TouchInteractionEvent.TOUCH_INTERACTION_START, true, true);
                scrollStartEvent.relatedObject = scroller;
                scrollStartEvent.reason = TouchInteractionReason.SCROLL;
                dispatchBubblingEventOnMouseDownedDisplayObject(scrollStartEvent);
                
                isScrolling = true;
                
