var banner_count
var banner_id
var timerID = null
var timerRunning = false
var delay = 5000


function initialize_timer() {
	banner_count = 0
	document.getElementById('banner1').style.display = 'block';
	
	StopTheClock()
	StartTheTimer()
}

function StopTheClock() {
	if(timerRunning)
		clearTimeout(timerID)
	timerRunning = false
}

function StartTheTimer() {

	if (banner_count == 6) { banner_count = 1; } else { banner_count = banner_count + 1; }
	
	for (i = 1; i <= 6; i++) {

		banner_id = document.getElementById('banner' + i);
		
		if (i != banner_count) { 
			banner_id.style.display = 'none';
		} 
		else { 
			// alert(i+' display block');
			banner_id.style.display = 'block';
		}

	}

	timerRunning = true
	timerID = self.setTimeout("StartTheTimer()", delay)
}