var timerID = null;
var timerRunning = false;

function stopclock(){
	if(timerRunning){
		clearTimeout(timerID);
		timerRunning = false;
	}
}

function showtime(){
	var now = new Date();
	var hours = now.getHours();
	var minutes = now.getMinutes();
	var seconds = now.getSeconds();
	
	var timeValue = (hours>=12)?'ΟΒΞη ':'ΙΟΞη ';
	timeValue += ((hours>12)?hours-12:hours);
	timeValue += ((minutes<10)?':0':':') + minutes;
	timeValue += ((seconds<10)?':0':':') + seconds;
	
	window.status = timeValue;
	timerID = setTimeout('showtime()',1000);
	timerRunning = true;
}

function startclock(){
	stopclock();
	showtime();
}