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.getAttribute("rel") == "nofollow" ||
 anchor.getAttribute("rel") == "external nofollow" ||
 anchor.getAttribute("rel") == "external co-worker" ||
 anchor.getAttribute("rel") == "external co-worker nofollow" ||
 anchor.getAttribute("rel") == "nofollow external")
 )
            anchor.target = "_blank";
    }
}
window.onload = function () {
    externalLinks();
}