document.onclick = function(e)
{
  var target = e ? e.target : window.event.srcElement;

  while (target && !/^(a|body)$/i.test(target.nodeName))
  {
	target = target.parentNode;
  }

  if (target && target.getAttribute('rel')
	  && target.rel == 'external')
  {
	var external = window.open(target.href);

	return external.closed;
  }
return e;
}