function mostra_span(id) {
	//exibe o span certo a partir do ID
	var obj = document.getElementById(id);
	if(obj.style.display == "") {
	 obj.style.display = "block";
	} else {
	 obj.style.display = "";
	}
}

function oculta_span(id) {
	//oculta o span certo a partir do ID
	var obj = document.getElementById(id);
	if(obj.style.display == "block") {
	 obj.style.display = "";
	} else {
	 obj.style.display = "block";
	}
}

function span_conjuge() {
	var obj = document.getElementById('conjuge');
	var combo = document.getElementById('estado_civil');
	if(combo.value == "1") {
	 obj.style.display = "block";
	} else {
	 obj.style.display = "";
	}
}