   _cleanUp: ->
     @$el.off "drop", @options.selector, @_handleDrop
     @$el.off "dragleave", @options.selector, @_handleDragleave
+    $(window).off "mouseout", @_handleWindowMouseout
     @$el.off "dragover", @options.selector, @_handleDragover
     @isBound = false
 


    @_cleanUp()

  _handleDragleave: normalizeEventCallback (e, dataTransfer) ->
    if window.getComputedStyle(e.target)["pointer-events"] != "none"
      $(e.currentTarget).removeClass(@options.hoverClass) if @options.hoverClass

      unless @isBound
        @$el.on "drop", @options.selector, $.proxy(this, "_handleDrop")
        @$el.on "dragleave", @options.selector, $.proxy(this, "_handleDragleave")
        $(window).on "mouseout", $.proxy(this, "_handleWindowMouseout")
        @$el.on "dragover", @options.selector, $.proxy(this, "_handleDragover")
        @isBound = true

