// JavaScript Document
  var capa
  function cambio(idCapa){
  if (document.layers) capa = eval("document." + idCapa);
  if (document.all) capa = eval(idCapa + ".style");
  if (document.getElementById) capa = eval('document.getElementById("' + idCapa + '").style');
  if (capa.display == "none") {
  //capa.visibility = (document.layers) ? "show" : "visible" ;
  capa.display = (document.layers) ? "show" : "block" ;
  }else{
  //capa.visibility = (document.layers) ? "hide" : "hidden" ;
  capa.display = (document.layers) ? "hide" : "none" ;
  }
  }
//-->