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('clock').innerHTML=h+":"+m+":"+s;
	t=setTimeout(function(){startTime()},500);
};

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