// JavaScript Document

var interval = 3; // delay between rotating images (in seconds)
var random_display = 0; // 0 = no, 1 = yes
interval *= 1000;
var interval2 = 2;
interval2 *= 1000;
var interval3 = 3;
interval3 *= 1000;
var interval4 = 4;
interval4 *= 1000;

var image_index = 0;
image_list = new Array();
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_1.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_2.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_3.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_4.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_5.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_6.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_11.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_12.jpg");
image_list[image_index++] = new
imageItem("images/rImages/sub_rImage_13.jpg");
var number_of_image = image_list.length;
function imageItem(image_location) {
this.image_item = new Image();
this.image_item.src = image_location;
}
function get_ImageItemLocation(imageObj) {
        return(imageObj.image_item.src)
}
function generate(x, y) {
        var range = y - x + 1;
        return Math.floor(Math.random() * range) + x;
}
function getNextImage() {
        if (random_display) {
            image_index = generate(0, number_of_image-1);
        }
        else {
            image_index = (image_index+1) % number_of_image;
        }
        var new_image = get_ImageItemLocation(image_list[image_index]);
        return(new_image);
}
function rotateImage(place) {
        var new_image = getNextImage();
        document[place].src = new_image;
        var recur_call = "rotateImage('"+place+"')";
        setTimeout(recur_call, interval);
}