// JavaScript Document

function carga_fr(file){
  var midiv = document.getElementById('iframe_div');
  var botcerrar = document.getElementById('bot_cerrar');
  var myiframe = document.getElementById('mail_iframe');
  myiframe.src = file;
  midiv.style['visibility'] = 'visible';
}

function esconde_div(){
//  var iframeTag = document.getElementById('frame');
//  var body = document.getElementsByTagName('body').item(0);
  var midiv = document.getElementById('iframe_div');
  var botcerrar = document.getElementById('bot_cerrar');
  midiv.style['visibility'] = 'hidden';
}
function closeIframe() {
   var iframe = document.getElementById('mail_iframe');
   iframe.parentNode.removeChild(iframe);
}