(document.layers)? ie = false : ie = true;
function change() {
	num = Math.floor(Math.random()*3)+1;
	if (ie) {
		document.foto_center.src = "imagens/random/m"+num+".jpg";
	} else if (!ie) {
		document.foto_center.src = "imagens/random/m"+num+".jpg";
	}
	
	//time_out = setTimeout('change()',1000);
}