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.target = "_blank";
	}
}
window.onload = externalLinks;