function InitialiseBannerAdRotator() {
	//window.document.bannerad.style.display = block;
	
	var BrowserType = navigator.appName;
	var BrowserVersion = parseInt(navigator.appVersion);
	if (BrowserType == "Netscape" && (BrowserVersion >= 3)) {
		IsValidBrowser = true;
	}
	if (BrowserType == "Microsoft Internet Explorer" && (BrowserVersion >= 4)) {
		IsValidBrowser = true;
	}	
	if (IsValidBrowser) {
		TimerObject = setTimeout("ChangeImage()", DisplayInterval);
		BannerAdCode = 0;
		
		for (i = 0; i < NumberOfImages; i++) {
			BannerAdImages[i] = new Image();
			BannerAdImages[i].src = ' ' + ImageFolder + ImageFileNames[i];
		}
	}	
}

function ChangeImage() {

	if (IsValidBrowser) {
		BannerAdCode = BannerAdCode + 1;

		if (BannerAdCode == NumberOfImages) {
			BannerAdCode = 0;
		}

		window.document.bannerad.src = BannerAdImages[BannerAdCode].src;
		TimerObject = setTimeout("ChangeImage()", DisplayInterval);
	}
}