<!-- Begin AdvertPRO 3.6 Pop Under Code -->
<!-- Region ID#: 168 -->
<!-- Region Name: POP UP Economía -->
<!-- Display Once: Enabled -->

//if (get_cookie('popunder168')=='') {
if (false) {
var popUnderWindow = window.open("http://www.nacionadserver.com/cgi-bin/advertpro/banners.pl?region=168&mode=POPUP&keyword=NULL", "popunder", "width=400,height=200");

   document.cookie="popunder168=yes;path=/";
   try {
      popUnderWindow.blur();
   } catch (errorObject) {}
}

function get_cookie(name) {
  var search = name + "=";
  var returnvalue = "";
  if (document.cookie.length > 0) {
    offset = document.cookie.indexOf(search);
    if (offset != -1) {
      offset += search.length;
      end = document.cookie.indexOf(";", offset);
      if (end == -1) {
        end = document.cookie.length;
      }
      returnvalue=unescape(document.cookie.substring(offset, end));
    }
  }
  return returnvalue;
}

<!-- End AdvertPRO 3.6 Pop Under Code -->