var arrTimedDivs = new Array("1", "2", "3");
var delay = 5000; //miliseconds

var currentIndex = 0;
var timer = 0;

window.onload = WindowLoad;

function WindowLoad(event) {
	timer = window.setTimeout("RotateDivs();", 1);
}

function RotateDivs() {
	var strContainerId = arrTimedDivs[currentIndex];
	var objDivToHide = document.getElementById(strContainerId);
	
	if (!objDivToHide) {
		//alert("fatal error: no element with id of " + strContainerId);
		return false;
	}
	
	strContainerId = arrTimedDivs[(currentIndex+1) % (arrTimedDivs.length)];
	var objDivToShow = document.getElementById(strContainerId);
	
	if (!objDivToShow) {
		//alert("fatal error: no element with id of " + strContainerId);
		return false;
	}
	
	objDivToHide.style.display = "none";
	objDivToShow.style.display = "";
	
	currentIndex++;
	if (currentIndex >= arrTimedDivs.length)
		currentIndex = 0;
	
	timer = window.setTimeout("RotateDivs();", delay);
}