pointer-events.coffee

# Disable and enable event on scroll begin and scroll end.
# @see http://www.thecssninja.com/javascript/pointer-events-60fps
root = document.documentElement
timer = null

window.addEventListener 'scroll', ->
    clearTimeout timer
    # Pointer events has not already been disabled.
    if not root.style.pointerEvents
        root.style.pointerEvents = 'none'

    timer = setTimeout ->
        root.style.pointerEvents = ''
    , 333
, false