helper: s_to_hh_mm_ss

Convert seconds to hh:mm:ss

  def s_to_hh_mm_ss(number)
    seconds = "%02d" % (number % 6)
    minutes = "%02d" % ( (number / 60 ) % 60)
    hours = "%02d" % ( (number / 3600) % 24) 
   
    return (hours + minutes + seconds).scan(/../).join(':')
  end