var interval = 2.0; // delay between rotating images (in seconds)
var random_display = 0; // 0 = no, 1 = yes
interval *= 1000;

var image_index = 0;
image_list = new Array();
image_list[image_index++] = new imageItem("images/banner1.jpg");
image_list[image_index++] = new imageItem("images/banner2.jpg");
image_list[image_index++] = new imageItem("images/banner3.jpg");

link_list = new Array();
link_list[2] = "http://responsahabilidade.org.br";
link_list[1] = "http://www.arquitetodigital.com.br";
link_list[0] = "http://www.ciclosdobrasil.org.br";


participacao = new Array();
participacao[2] = "Parceiro";
participacao[1] = "Parceiro";
participacao[0] = "Executora";

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]);
		document.getElementById('link').href=link_list[image_index];
		document.getElementById('participacao').innerHTML = participacao[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);
}