// JavaScript Document

function $(id){
	return document.getElementById(id);
}

function trocar(bt){
	if (bt == 1) {
		x=1;
	}
	if (bt == 2) {
		x=2;
	}
	if (bt == 3) {
		x=3;
	}
	
	var ft = new Array()
		ft[1] = "<img src='img/bn_promo.png' alt='Foto 1'>";
		ft[2] = "<img src='img/bn_orq_viol.png' alt='Foto 2'>";
		ft[3] = "<img src='img/banner.png' alt='Foto 3'>";
		
	$("banner").innerHTML = ft[x];
	
}

function noticia(){
	//cria o array foto
	var ft = new Array()
		ft[1] = "<img src='img/bn_promo.png' alt='Foto 1'>";
		ft[2] = "<img src='img/bn_orq_viol.png' alt='Foto 2'>";
		ft[3] = "<img src='img/banner.png' alt='Foto 3'>";
		
		$("banner").innerHTML = ft[x];
	
	//incremento
	x++;
	if (x > 3){
		x=1;
	}
}

//declara variável inicial
var x = 2;



setInterval("noticia()",7500);