       when 38 then @stepBack() # up
       when 39 then @stepOver() # right
       when 40 then @stepOver() # down
+      else # do nothing
+
     if (event.ctrlKey || event.shiftKey) && !event.altKey
       switch event.keyCode
         when 80 then @setPresenter() # Ctrl+P || Shift+P
+        else # do nothing
 
 ###
-  Intialization
+  Initialization
 ###
 $ () ->
   @prez = new Prez()

      $now.html now.format("HH:mm")
      diff = now.diff start
      $time.html moment(diff).format("mm:ss")
    # TODO open and drive the
    url = document.location.toString()
    twin = window.open url, "_blank"


  # Get the Hash or go Home
  handleHash = () ->
    page = location.hash.substr(1) | 0
    index = if page is 0 then 0 else page - 1
    @prez.moveTo index
  $(this).on "hashchange", handleHash
  handleHash()

