Handy object to call any number of functions when a user has stopped scrolling. Uses jQuery

scrollNotifier.coffee

scrollNotifier = do ->
  TIMEOUTINTERVAL = 50
  scrollTimer = null
  returnable = {}
  callbacks = []
  bound = false

  mainCallback = ->
    clearTimeout(scrollTimer)
    scrollTimer = setTimeout( ->
      for fn in callbacks
        fn()
      , TIMEOUTINTERVAL)

  returnable.addCallback = (func) ->
    if not bound
      $(window).bind("scroll", mainCallback)
      bound = true
    callbacks.push func

  return returnable