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

function getPrevImage()
{
	//alert(ImageNum);
	if (ImageNum==number_of_image)
	{
		ImageNum=number_of_image-1;
	}
	if (ImageNum==0)
	{
		ImageNum=number_of_image;
	}
	ImageNum = Math.abs((ImageNum-1));
	//alert(ImageNum);
	//ImageNum = Math.abs((ImageNum-1) % number_of_image);
	var new_image = get_ImageItemLocation(imageArray[ImageNum]);
	//alert(ImageNum);
	return(new_image);
}

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

function nextImage(place)
{
	var new_image = getNextImage();
	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);
}