// JavaScript Document
//  Store ad images in array
var adPath = new Array("images/harcourtsAd1.jpg", "images/harcourtsAd2.jpg");


var adNumber = 0;
function changeAd(){
		if (document.getElementById('adRotatorImage')){
			document.images[0].src = adPath[adNumber];
		
		adNumber++;
		
		if (adNumber == adPath.length){
				adNumber=0;
		}
	setTimeout("changeAd()", 1000);
		}
}