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 nofollow")
						|| (anchor.getAttribute("rel") == "nofollow external") || (anchor
						.getAttribute("rel") == "external")))
			anchor.target = "_blank";
	}
}
window.onload = externalLinks;