// JavaScript Document
var atual = 1
var nova = 2
var intervalo = 0
function fadeOut(id, time) {
	target = document.getElementById(id);
	alpha = 100;
	timer = (time*1000)/50;
	var i = setInterval(
			function() {
				if (alpha <= 0)
					clearInterval(i);
				setAlpha(target, alpha);
				alpha -= 2;
			}, timer);
}
function fadeIn(id, time) {
	target = document.getElementById(id);
	alpha = 0;
	timer = (time*1000)/50;
	var i = setInterval(
			function() {
				if (alpha >= 100)
					clearInterval(i);
				setAlpha(target, alpha);
				alpha += 2;
			}, timer);
}

function setAlpha(target, alpha) {
	target.style.filter = "alpha(opacity="+ alpha +")";
	target.style.opacity = alpha/100;
    target.style.MozOpacity = alpha/100;
    target.style.KhtmlOpacity = alpha/100;
}
function F_fecha(atual){
	document.getElementById("n"+atual).style.filter = "alpha(opacity=100)";
	document.getElementById("n"+atual).style.opacity = 1;
	fadeOut("n"+atual, 0.1);
	setTimeout("F_display("+atual+")", 100);

}
function F_display(atual){
	document.getElementById("n"+atual).style.display = "none";
}
function F_abre(nova){
	//alert(nova);
	document.getElementById("n"+nova).style.filter = "alpha(opacity=0);";
	document.getElementById("n"+nova).style.opacity = 0;
	document.getElementById("n"+nova).style.display = 'block';
	fadeIn("n"+nova, 0.1);
}

function troca_noticias(nova, acao){
	//alert(intervalo);
	clearInterval(intervalo);
	if (atual != nova){
		if (atual > 5){
			atual = 1;
		}
		if (nova > 5){
			nova = 1;
		}
		//alert("teste 11111\n\n"+atual+"=="+nova)
		F_fecha(atual);//FECHA A ATUAL
		F_abre(nova);//ABRE A NOVA NOTÍCIA
		
		//CONTADOR
		if (acao == 0){
			atual = atual + 1;
			nova = nova + 1;
		}else{
			atual = nova;
			nova++;
		}
		//alert("teste 2222\n\n"+atual+"=="+nova)
		intervalo = setInterval("troca_noticias("+nova+",0)", 8000);
	}
}