var aLink;
var interval = 4; // delay between rotating images (in seconds)
var random_display = 0; // 0 = no, 1 = yes
interval *= 1000;

var url = ["/upgrade.asp", "/maintenance.asp", "fixtures.asp"];

var image_index = 0;
image_list = new Array();
image_list[image_index++] = new imageItem("images2/header_img1.jpg");
image_list[image_index++] = new imageItem("images2/header_img2.jpg");
image_list[image_index++] = new imageItem("images2/header_img3.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;
    }

    aLink = document.getElementById('myLink');
    aLink.href = url[image_index];
    
    
    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);
   

}

function doLink(place) {
    rotateImage(place);    
   
}