function StartClock() {
 Time12 = new Date();
 Cur12Hour = Time12.getHours();
 Cur12Mins = Time12.getMinutes();
 Cur12Secs = Time12.getSeconds();
 The12Time = ((Cur12Hour < 10) ? "0" : "") + Cur12Hour;
 The12Time += ((Cur12Mins < 10) ? ":0" : ":") + Cur12Mins;
 The12Time += ((Cur12Secs < 10) ? ":0" : ":") + Cur12Secs;
 document.getElementById("hodiny").innerHTML =  The12Time;
 setTimeout("StartClock()",1000);
}