jQuery(document).ready(function() {
	externalLinks();
});

function externalLinks() {
  if (!document.getElementsByTagName) return;
  var anchors = document.getElementsByTagName("a");
  for (var i=0; i<anchors.length; i++) {
    var anchor = anchors[i];
		var rel_value = anchor.getAttribute("rel");
		var pattern=/external/i;
    if (anchor.getAttribute("href") && 
				(pattern.test(rel_value)))
			anchor.target = "_blank";
	}
}