// JavaScript Document
function externalLinks() {
  if (!document.getElementByTagName) return;
  var anchors =  document.getElementByTagName("a");
  for (var i=0; i<anchors.length; i++) {
    var anchor = anchors[i];
	if (anchor.getAttribute("href") &&
	    anchor.getAttribute("rel") == "external")
	  anchor.target = "_blank";	
  }
}
window.onload = externalLinks;