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"; 
 } 
}

var onloadOld2 = "";
	if(window.onload != null) onloadOld2 = window.onload;
	window.onload = function() {
	  if(onloadOld2 != "") onloadOld2();
	  externalLinks();
	}