function externalLinks() {
	var anchors, anchor, i;

	if ((typeof(document.getElementsByTagName) == 'undefined') || !document.getElementsByTagName) return;

	anchors = document.getElementsByTagName("a");

	for (i = 0; i < anchors.length; i++) {
		anchor = anchors[i];

		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") anchor.target = "_blank";

	}

}