 
         actionsUpdate = ->
 
-          d = scrollY - y
+          d = scrollY - prevScrollY
 
           if d<0 and actionFrameIdx >= 0  # scroll up: don't apply on page load (only apply on page load for downward movement)
             idx = if (actionFrameIdx >= actionFrames.length) then actionFrameIdx-1 else actionFrameIdx


          actionFrames.sort (a,b) -> a > b

          y = scrollY = $window.scrollY
          update()
          actionsUpdate()
        , true  # deep watch

      (scope, element, attr) ->
        actor = rekapi.addActor({ context: element[0] })
        y = 0
        prevScrollY = 0
        scrollY = 0
        animationFrame = new AnimationFrame()
        updating = false
