function externalLinksNewWindows() {
  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.href.substr(7,window.location.hostname.length) != window.location.hostname || anchor.href.indexOf('.pdf') != -1 || anchor.href.indexOf('.htm') != -1) && anchor.href.substr(0,10) != 'javascript') {
      anchor.target = "_blank";
    }
  }
}