/*
This JavaScript is a standards compliant method of opening
an external link in a new browser window

Usage: <a href="document.html" rel="external">external link</a>

In other words, use rel=external, instead of target=_blank

*/

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;