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 == 'popup'){
    var external = window.open(target.href,'','width=650,height=550,   toolbar=no, menubar=no, scrollbars=yes, resizable=yes,location=no'); 

    return external.closed;
  }

  if (target && target.getAttribute('rel') && target.rel == 'external'){
var external = window.open(target.href,'','width=700,height=500, toolbar=yes, menubar=yes, scrollbars=yes, resizable=yes,location=yes'); 

    return external.closed;
  }


}