scroll_shortcut.js.coffee

match = (element) ->
  $(element).is "body, #workspace, #workspace > div.container"

$("html").bind "mousedown", (event) ->
  if match event.target
    event.preventDefault()

$("html").bind "dblclick", (event) ->
  if match event.target
    percentage = parseInt event.clientY / window.innerHeight * 100

    if percentage < 33
      $.scrollTo 0, 300
    else if percentage > 66
      $.scrollTo "max", 300