refreshtimer

<html>
  <head>
    <title>
      Countdown
    </title>
    <script type="text/javascript">
      var mins = 5;
      var secs = mins * 60;
      function countdown()
      {
        setTimeout('Decrement()',1000);
      }
     function Decrement()
     {
       if (document.getElementById)
       {
         minutes = document.getElementById("minutes");
         seconds = document.getElementById("seconds");
         if (seconds < 59)
         {
           seconds.value = secs;
         }
         else
         {
           minutes.value = getminutes();
           seconds.value = getseconds();
         }
         secs--;
         setTimeout('Decrement()',1000);
       }
     }
     function getminutes()
     {
       mins = Math.floor(secs / 60);
       return mins;
     }
     function getseconds()
     {
       return secs-Math.round(mins *60);
     }
    </script>
  </head>

  <body>
    <div id="timer">
      <p style="color: #FFE87C; font-family: Arial, Helvetica; font-size:12px; ">
        De site herlaadt automatisch in
        <input id="minutes" type="text" style="width: 8px; font-family: Arial, Helvetica; color: #FFE87C; border: none; background:none; font-size: 12px; font-weight: bold;">
        :
        <input id="seconds" type="text" style="width: 16px; background:none; font-size: 12px; font-family: Arial, Helvetica; color: #FFE87C; border:none; font-weight: bold;">
        . Denk hieraan!
      </p>
    </div>
    <script>
      countdown();
    </script>
  </body>
</html>