function resposta(resp){
		var resposta= document.getElementById(resp);
		var respostas= document.getElementById("pf").getElementsByTagName("div");
			if(resposta.style.display != "block"){
				for (var i=0; i<respostas.length; i++){
					respostas[i].style.display = "none"
				}
				resposta.style.display = "block";
			
			} else {
				resposta.style.display = "none";
			}
		
	}


function abre(obj){
	document.getElementById(obj).style.display="block";
}
 
function fecha(obj){
	document.getElementById(obj).style.display="none";
 
}