externalLinks();

function externalLinks() {   
 if (!document.getElementsByTagName) return;   
var anchors = document.getElementsByTagName("a");   

for (var i=0; i<anchors.length; i++) {   
   	var anchor = anchors[i];   
	var xa=false;
if (anchor.getAttribute("href")){xa=anchor.getAttribute("rel");}
if((xa == "external") || (xa == "nofollow") ||(xa == "reciprocal")){anchor.target = "_blank"; }
	}   
}