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setCookie = (name, value, days) ->
  if days
    date = new Date()
    date.setTime date.getTime() + (days * 24 * 60 * 60 * 1000)
    expires = "; expires=" + date.toGMTString()
  else
    expires = ""
  document.cookie = name + "=" + value + expires + "; path=/"
getCookie = (name) ->
  nameEQ = name + "="
  ca = document.cookie.split(";")
  i = 0

  while i < ca.length
    c = ca[i]
    c = c.substring(1, c.length)  while c.charAt(0) is " "
    return c.substring(nameEQ.length, c.length)  if c.indexOf(nameEQ) is 0
    i++
  null
deleteCookie = (name) ->
  setCookie name, "", -1