//Start: Head image rotation - Random
//-------------------------------------------------------------------------------------------

var interval = 8;
var random_display = 1;
interval *= 1000;

var image_index = 0;
image_list = new Array();
image_list[image_index++] = new imageItem("images/ri1.gif");
image_list[image_index++] = new imageItem("images/ri2.gif");
image_list[image_index++] = new imageItem("images/ri3.gif");
image_list[image_index++] = new imageItem("images/ri4.gif");
image_list[image_index++] = new imageItem("images/ri5.gif");
image_list[image_index++] = new imageItem("images/ri6.gif");
image_list[image_index++] = new imageItem("images/ri7.gif");
image_list[image_index++] = new imageItem("images/ri8.gif");
image_list[image_index++] = new imageItem("images/ri9.gif");
image_list[image_index++] = new imageItem("images/ri10.gif");
image_list[image_index++] = new imageItem("images/ri11.gif");
image_list[image_index++] = new imageItem("images/ri12.gif");
image_list[image_index++] = new imageItem("images/ri13.gif");
image_list[image_index++] = new imageItem("images/ri14.gif");
image_list[image_index++] = new imageItem("images/ri15.gif");

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+"')";
timerID = setTimeout(recur_call, interval);
}

//End: Head image rotation - Random
//-------------------------------------------------------------------------------------------