function UpdateClock()
{
   var tDate = new Date();
   gY=tDate.getFullYear();
   gM=tDate.getMonth()+1; if (gM<10) gM="0" + gM;  // 0: january, 1:february, etc
   gD=tDate.getDate();    if (gD<10) gD="0" + gD;  // day of month
   gH=tDate.getHours();   if (gH<10) gH="0" + gH;
   gI=tDate.getMinutes(); if (gI<10) gI="0" + gI;
   gS=tDate.getSeconds(); if (gS<10) gS="0" + gS;
   /*
   alert(tDate.getMonth());
   alert(tDate.getDay());
   alert(tDate);
   */
   document.getElementById('pi').innerHTML = ""
                                   + gY + "." + gM + "." + gD + " "
                                   + gH + ":" + gI /*+ ":" + gS*/;

   setTimeout("UpdateClock()", 5000);
}