function abrirPag(valor){
var url = valor;

xmlRequest.open("GET",url,true); 
xmlRequest.onreadystatechange = mudancaEstado;
xmlRequest.send(null);

if (xmlRequest.readyState == 1) {
document.getElementById("centro").innerHTML = "<img src='imagens/loading.gif'> Carregando...";
}

return url;
}

function mudancaEstado(){
if (xmlRequest.readyState == 4){
/*document.getElementById("quem").style.display = 'none';
document.getElementById("sedes").style.display = 'none';
document.getElementById("vig").style.display = 'none';
document.getElementById("cons").style.display = 'none';
document.getElementById("comercial").style.display = 'none';
document.getElementById("trabalhe").style.display = 'none';
*/
document.getElementById("centro").innerHTML = xmlRequest.responseText;
}
}

function mostrarMapa(valor){
var url = valor;	

xmlRequest.open("GET",url,true); 
xmlRequest.onreadystatechange = Carregar;
xmlRequest.send(null);

if (xmlRequest.readyState == 1) {
document.getElementById("mostra").innerHTML = "<img src='imagens/loading.gif'> Carregando...";
}
return url;
}
function Carregar(){
	if(xmlRequest.readyState == 4){
		document.getElementById("mostra").innerHTML = xmlRequest.responseText;
	}
}