var interval = 1500;
var random_display = 0;
var image_dir = "./images/xmas08/"
var ImageNum = 0;
imageArray = new Array();
imageArray[ImageNum++] = new imageItem(image_dir + "door.jpg");
imageArray[ImageNum++] = new imageItem(image_dir + "moose.jpg");
imageArray[ImageNum++] = new imageItem(image_dir + "room.jpg");
imageArray[ImageNum++] = new imageItem(image_dir + "table2.jpg");
imageArray[ImageNum++] = new imageItem(image_dir + "nativity.jpg");
imageArray[ImageNum++] = new imageItem(image_dir + "cake.jpg");
//More images here

var number_of_image = imageArray.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 randNum(x, y) 
{
	var range = y - x + 1;
	return Math.floor(Math.random() * range) + x;
}

function getNextImage() 
{
	if (random_display) 
	{
		ImageNum = randNum(0, number_of_image-1);
	}
	else 
	{
		ImageNum = (ImageNum+1) % number_of_image;
	}
	var new_image = get_ImageItemLocation(imageArray[ImageNum]);
	return(new_image);
}

function getPrevImage() 
{
	if (ImageNum == 0)
	{
		ImageNum = number_of_image-1;
	}
	else
	{
		ImageNum = (ImageNum-1) % number_of_image;
	}
	var new_image = get_ImageItemLocation(imageArray[ImageNum]);
	return(new_image);
}

function prevImage(place) 
{
	var new_image = getPrevImage();
	document[place].src = new_image;
}

function rotateImage(place) 
{
	var new_image = getNextImage();
	document[place].src = new_image;
	var recur_call = "rotateImage('"+place+"')";
	timerID = setTimeout(recur_call, interval);
}