var interval = 3; // delay between rotating images (in seconds)
	var random_display = 1; // 0 = sequential, 1 = random
	interval *= 1000;
	
	var image_index = 0;
	
	image_list = new Array();
	image_list[image_index++] = new imageItem("images/top_pages/1.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/2.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/3.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/4.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/5.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/6.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/7.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/8.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/9.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/10.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/11.jpg");
	image_list[image_index++] = new imageItem("images/top_pages/12.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);
	}