// JavaScript Document

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