// Open links with rel="external" in a new window
window.onload = function() {
   if (!document.getElementsByTagName) return false;
   var links = document.getElementsByTagName("a");
   for (var i = 0; i < links.length; i++) {
	  if (links[i].getAttribute("rel") == "external") {
		 links[i].onclick = function() {
			return !window.open(this.href);
		 }
	  }
   }
}