//User defined variables - change these variables to alter the behaviour of the script

var ImageFolder = "imgs"; //Folder name containing the images
var ImageFileNames = new Array('MainStLogocrpd2.jpg','city_hall.jpg','CougMom1.jpg','CougKittens.jpg', 'IP_fall.jpg','IP_winter.jpg','Duncan_creek.jpg','Irvine_waterspout.jpg','rainbow_bridge.jpg','birdseyeview.jpg','Glen_Lock_Dam.jpg'); //List of images to use
var DisplayInterval = 5; //Number of seconds to wait before the next image is displayed
var TargetFrame = ""; //Name of the frame to open the hyperlink into

//Internal variables (do not change these unless you know what you are doing)
var IsValidBrowser = false;
var BannerAdCode = 0;
var BannerAdImages = new Array(NumberOfImages);
var DisplayInterval = DisplayInterval * 1000;
var NumberOfImages = ImageFileNames.length;

//Add a trailing forward slash to the ImageFolder variable if it does not already have one
if (ImageFolder.substr(ImageFolder.length - 1, ImageFolder.length) != "/" && ImageFolder != "") { ImageFolder += "/";
}

if (TargetFrame == '') {
var FramesObject = null;
} else {
var FramesObject = eval('parent.' + TargetFrame);
}

//Function runs when this page has been loaded and does the following:
	//1. Determine the browser name and version
	// (since the script will only work on Netscape 3+ and Internet Explorer 4+).
	//2. Start the timer object that will periodically change the image displayed
	// by the Banner Ad.
	//3. Preload the images used by the Banner Ad rotator script

function InitialiseBannerAdRotator() {

//Determine the browser name and version
//The script will only work on Netscape 3+ and Internet Explorer 4+

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 to change the src of the Banner Ad image

function ChangeImage() {

if (IsValidBrowser) {
BannerAdCode = BannerAdCode + 1;

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

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