// JavaScript Document

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;