function abrirPag(valor){
	var url = valor;
	xmlRequest.open("post",url,true);
	xmlRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");	// Setando Content-type
	xmlRequest.setRequestHeader("Content-length", url.length); // Comprimento do conteúdo=comprimento dos dados a enviar
	xmlRequest.onreadystatechange = mudancaEstado;
	xmlRequest.send(null);
	
	/*if (xmlRequest.readyState == 1) {
		document.getElementById('loading').innerHTML = '<font color="Blue">Carregando...</font>';
		document.getElementById("loading").innerHTML = "<img src='../script/images/loader4.gif'>";
	}*/
	return url;
	//return innerHTML;
}
function mudancaEstado(){
	if (xmlRequest.readyState == 4){
		
		obj = document.getElementById("transicao"); obj.style.display = "block"; 
		document.getElementById("transicao").innerHTML = xmlRequest.responseText;
	
	
	}
}