window.onload = choosePic;

var adImages = new Array("../img/rooftoparmy.jpg","../img/ridge.jpg","../img/willow.jpg","../img/storm.jpg","../img/figures.jpg");

function rotate() {
	thisAd++;
	if (thisAd == adImages.length) {
		thisAd = 0;
	}
	document.getElementById("adBanner").src = adImages[thisAd];

	setTimeout("rotate()", 3 * 1000);
}


function choosePic() {
	thisAd = Math.floor((Math.random() * adImages.length));
	document.getElementById("adBanner").src = adImages[thisAd];
	
	rotate();
}

						// JavaScript Document