var image_index = 0;
    image_list = new Array();
    image_list[image_index++] = new imageItem("images/beefchowfoon.jpg");
    image_list[image_index++] = new imageItem("images/orange_beef.jpg");
    image_list[image_index++] = new imageItem("images/shrimp.jpg");
    image_list[image_index++] = new imageItem("images/orange_beef.jpg");
    image_list[image_index++] = new imageItem("images/spring_roll.jpg");
    image_list[image_index++] = new imageItem("images/tofu.jpg");
    image_list[image_index++] = new imageItem("images/wonton.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() {
    image_index = generate(0, number_of_image-1);
    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, 2000);
 }
 
function OpenAddressWindow(url){

OpenSizableWindow(url, "Address", 400, 500)
}
 
function OpenSizableWindow(url, name, width, height) {
    var leftPos = 0; var topPos = 0;
    if (screen) {
        leftPos = (screen.width / 2) - (width / 2);
        topPos = (screen.height / 2) - (height / 2);
    }
    var features = 'scrollbars=yes,status=no,menubar=no,resizable=yes,toolbar=no,left=' + leftPos + ',top=' + topPos + ',width=' + width + ',height=' + height;
    var w = window.open(url, name, features);
    w.focus();
}