function startTime() {


var today=new Date();


var h=today.getHours();


var m=today.getMinutes();


var s=today.getSeconds();


    m=checkTime(m);
    s=checkTime(s);
    document.getElementById('txt').innerHTML=h+":"+m+":"+s;
    t=setTimeout('startTime()',500);


 
}
function checkTime(i){
if (i<10) {
return "0"+i;
}
return i;
}