var interval = 100000; // delay between rotating images (in seconds)
var random_display = 1; // 0 = no, 1 = yes
interval *= 1000;

var image_index = 0;
var link_index = 0;
image_list = new Array();
link_list = new Array();
image_list[image_index++] = new imageItem("http://www.lifespan.org/images/promos/01.jpg");
image_list[image_index++] = new imageItem("http://www.lifespan.org/images/promos/02.jpg");
image_list[image_index++] = new imageItem("http://www.lifespan.org/images/promos/03.jpg");
image_list[image_index++] = new imageItem("http://www.lifespan.org/images/promos/04.jpg");
image_list[image_index++] = new imageItem("http://www.lifespan.org/images/promos/05.jpg");

link_list[link_index++] = "http://www.lifespan.org/rih/services/oncology/our_services/radiation/trilogy/";
link_list[link_index++] = "http://www.lifespan.org/hch/services/diagimag/";
link_list[link_index++] = "http://www.lifespan.org/tmh/services/cardiac/";
link_list[link_index++] = "http://www.lifespan.org/bradley/Services/CA/residential/default.htm";
link_list[link_index++] = "http://www.lifespan.org/newport/services/birthingctr/";

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,anchor) {
var new_image = getNextImage();
document[place].src = new_image;
document.getElementById("rLink").href = link_list[image_index];
var recur_call = "rotateImage('"+place+"')";
setTimeout(recur_call, interval);
}