function abrirPag(valor){
var url = valor;
xmlRequest.onreadystatechange = mudancaEstado;
xmlRequest.open("GET",url,true);
xmlRequest.send(null);
if (xmlRequest.readyState == 1) {
	document.getElementById("paginacao").innerHTML = "<img src='ajax_loader.gif'>";
}
return url;
}
function mudancaEstado(){
	if (xmlRequest.readyState == 4){
	document.getElementById("paginacao").innerHTML = xmlRequest.responseText;
	}
}