var image_index = 0;

var index=0;;

image_list = new Array();

image_list[image_index++] = new imageItem("images/w_loss_rotate_1.jpg");

image_list[image_index++] = new imageItem("images/w_loss_rotate_2.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;

	if(index >=y){

		index=0;

	}else{

		index++;

	}

	return index;

}

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, 4000);

}

rotateImage('rImage')