/*
  Set the target property of all rel=external links
  using the DOM.

  For more info see:
  http://www.sitepoint.com/article/standards-compliant-world
  */
  function externalLinks()
  {
   if (!document.getElementsByTagName) return;
   var anchors = document.getElementsByTagName("a");
   for (var i=0; i<anchors.length; i++) {
     var anchor = anchors[i];
     if (anchor.getAttribute("href") &&
         anchor.getAttribute("rel") == "external")
       anchor.target = "_blank";
   }
  }

  // Add load event
  if(window.addEventListener)
    window.addEventListener("load", externalLinks, false);
  else if(window.attachEvent)
      window.attachEvent("onload", externalLinks);
  else
      window["onload"] = externalLinks;