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";
 			}
		}
		window.onload = externalLinks;