document.onclick = function(e) {
  e = e || event;
  var t = e.target || e.srcElement;
  while (t && t.nodeType == 1 && t.tagName.toLowerCase() != 'a')
     t = t.parentNode;

  if (t && t.nodeType == 1 && /\bpopup\b/.test(t.className)) {
    window.open(t.href,'','resizable=yes,scrollbars=yes,menubar=yes,width=1020, height=800, top=100, left=0');
    return false;
  }
  return true;
}