{ coded = "4WbO@xj8zex9u.jw"

  key = "y2IHG90PzalLQtWqBvS35VmKUx7hsjiApw1dfoeTENgX8k4D6JCrbOuZMYcFnR"

  shift=coded.length

  link=""

  for (i=0; i<coded.length; i++) {

    if (key.indexOf(coded.charAt(i))==-1) {

      ltr = coded.charAt(i)

      link += (ltr)

    }

    else {     

      ltr = (key.indexOf(coded.charAt(i))-shift+key.length) % key.length

      link += (key.charAt(ltr))

    }

  }

document.write("<a href='mailto:"+link+"'>→お問い合わせ</a>")

}