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;