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# スムーズスクロール
smoothScroll = (ref, speed = 500, easing = "swing")->
  yTarget = if (ref is "#" or ref is "") then 0 else $(ref).offset().top
  $("html, body").animate
    scrollTop : yTarget
  , speed
  , easing

$ ->
  # スムーズスクロールのバインド
  $("a[href^='#']").on "click", (e)->
    e.preventDefault()
    smoothScroll $(@).attr("href")
    e.stopPropagation()