function SetExternalLinks() {
	if(!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	var a;
	for (var i=0; i<anchors.length; i++) {
		a = anchors[i];
		if (a.getAttribute("href") && a.getAttribute("rel") == "external")
			a.target = "_blank";
	}
}