// JavaScript Document
/*
The functions below are for a rotating image gallery in one <img> tag by replacing the src attribute with a new one from the array of images
*/
var interval=5500;
var image_index = 0;
var randomDisplay = 0; /* 0 for no, 1 for yes*/
image_list = new Array();

image_list[image_index++] = new ImageItem("images/rotator/summer01.jpg");
image_list[image_index++] = new ImageItem("images/rotator/home02.jpg");
image_list[image_index++] = new ImageItem("images/rotator/chamber03.jpg");





var numberOfImages = image_list.length;

function ImageItem (image_location) {
    this.image_item = new Image();
    this.image_item.src = image_location;
}
function GetImageItemLocation(imageObj) {
    return(imageObj.image_item.src)
}
function RandomNum(x, y) {
    var range = y - x + 1;
    return Math.floor(Math.random() * range) + x;
}
function GetNextImage() {
    if (randomDisplay) {
        image_index = RandomNum(0, numberOfImages-1);
    } else {
        image_index = (image_index+1) % numberOfImages;
    }
    var new_image = GetImageItemLocation(image_list[image_index]);
    return(new_image); 
}
function RotateImage(place) {
    var newImage = GetNextImage();
    document[place].src = newImage;
    var recur_call = "RotateImage('"+place+"')";
    setTimeout(recur_call, interval);
}