function external() {
 if (document.getElementsByTagName) {
  var i, a;
  a = document.getElementsByTagName('a');
  for (var i in a) {
   if (a[i].rel == 'external') a[i].target = '_blank';
  }
 }
}

window.onload = function() {
	insert_footer('#72CE3A', null);
	external();
	
};