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.getAttribute("rel") == "nofollow"))) 
     anchor.target = "_blank"; 
 } 
}