// JavaScript Document
// JavaScript Document
var img = new Array('slide/topo_01.jpg','slide/topo_02.jpg','slide/topo_03.jpg','slide/topo_04.jpg','slide/topo_05.jpg');
var conta = img.length;	


function changeImg(num) {

var loadImg = document.getElementById("foto");
		mais = num + 1;
		var NovaFoto = new Image();
		NovaFoto.src = img[mais];
		
		if(document.getElementById('foto')) {
		document.getElementById('topo').removeChild(document.getElementById('foto'))	
		}
		
		var criaFoto = document.createElement('img');
		criaFoto['id'] = 'foto';
		criaFoto['src'] = img[num];
		if(document.getElementById('topo').appendChild(criaFoto)){
		$("#foto").fadeIn("slow");
		}
	
}

window.onload = function() {
changeImg(0);
}	


	function avancar() {
		var n = document.getElementById('inv').value++;
		changeImg(n);
		if(n == (conta - 1)){
		document.getElementById('inv').value = 0;
		}
		
	}

	var Intervalo = setInterval("avancar()", 5000);