 
       # Scroll offset
       @scrollOffset = new draw.Point 0, 0
+
+      # Touchscreen scrolling fields
+      @touchScrollAnchor = null
 
       offset = null
       highlight = null

          drag.style.webkitTransform =
            drag.style.mozTransform =
            drag.style.transform = "translate(#{fixedDest.x}px, #{fixedDest.y}px)"
      
      # Bind this mousemove function to mousemove. We need to add some
      # wrapper functions for touchmove, since multitouch works slightly differently


      track.addEventListener 'touchend', (event) =>
        event.preventDefault()

        @touchScrollAnchor = null

        performNormalMouseUp event.changedTouches[0]

