function externalLinks() {
if (!document.getElementsByTagName) return;
var anchors = document.getElementsByTagName("a");
for (var i=0; i < anchors.length; i++) {
if (anchors[i].getAttribute("href") &&

anchors[i].getAttribute("rel") == "external") {
anchors[i].target = "_blank";
}
}
} window.onload = externalLinks;