window.onload = choosePic;

var adImages = new Array("../Logos/banner-sitec.jpg","../Logos/banner-advalus.jpg","../Logos/banner-savills.jpg","../Logos/banner-royce.jpg");
var adURL = new Array("http://www.sitecgroup.co.uk","http://www.advalus.com","http://www.savills.com","http://www.royceclinic.co.uk");
var thisAd = 0;

function delay() {
	var i=0;
	for (i=0;i<=500000;i++)
	{
	}
}

function rotate() {
	thisAd++;
	if (thisAd == adImages.length) {
		thisAd = 0;
	}
	document.getElementById("adBanner").src = adImages[thisAd];
	setTimeout("rotate()", 4 * 1000);
}

function newLocation() {
	window.open(adURL[thisAd],'sameWin');
	return false;
}

function choosePic() {
	delay();
	thisAd = Math.floor((Math.random() * adImages.length));
	document.getElementById("adBanner").src = adImages[thisAd];
	if (document.getElementById("adBanner").parentNode.tagName == "A") {
		document.getElementById("adBanner").parentNode.onclick = newLocation;
	}
	rotate();
}