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"; 
 	} 
} 

function start() {
  fillup();
  externalLinks();
}
window.onload = start;