var interval = 10; // delay between rotating images (in seconds)
	var random_display = 1; // 0 = no, 1 = yes
	interval *= 1000;

	var image_index = 0;
	image_list = new Array();
	image_list[image_index++] = new imageItem("gallery/test1.png");
	image_list[image_index++] = new imageItem("gallery/test2.png");
	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);
	}