function showHide(id) {
	document.getElementById('Zona4').style.display = "none";
	document.getElementById('Zona5').style.display = "none";
	document.getElementById('Zona6').style.display = "none";
	document.getElementById('Zona7').style.display = "none";
  if (document.getElementById) {
    var el = document.getElementById(id);
    if (el.style.display == "block") {
      el.style.display = "none";
    } else {
      el.style.display = "block";
    }
  }
	
}