function apresentar(ajax){
	//var docXML = ajax.responseXML;
	document.getElementById("conteudo").innerHTML = ajax.responseXML;
	alert("teste");
	/*var tagpais = docXML.getElementsByTagName("paises");
	var txt = "";
	for(i = 0; 1< tagpais.length; i++){
		txt += tagpais[i].getElementsByTagName("nome")[0].childNodes[0].nodeValue + "<br/>";
	}
	document.getElementById("conteudo").innerHTML = txt;*/
}

function abrirAjax(){
	var ajax;
	//verifica se existe o objeto XMLHttpRequest
	if(window.XMLHttpRequest){
		ajax = new XMLHttpRequest();
	}else{
		//Internet Explorer
		try{
			ajax = new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			try{
				//Para IE6, IE5
				ajax = new ActiveXObject("Microsoft.XMLHTTP");
			}catch(e){
				alert("Seu browser não suporta AJAX!");
				return false;
			}
		}
	}
	return ajax;
}

function carregar(url){
	var ajax = abrirAjax();
		ajax.onreadystatechange = function(){
			if(ajax.readyState == 4){
				apresentar(ajax);
			}
		}
		ajax.open("GET", url, true);
		ajax.send(null);
}