function externalLinks() {

// Andrew Porter Glendinning (www.serve.com/apg/core)

// Fetch all the a elements in the document.
var links = document.getElementsByTagName('a');

// Loop through the a elements in reverse order
// for speed.
for (var i = links.length; i != 0; i--) {

// Pull out the element for this iteration.
var a = links[i-1];

// If the element doesn't have an href, skip it.
if (!a.href) continue;

// If the element has a className that contains
// 'external' attach the onclick handler.
if (a.className && a.className.indexOf('external') != -1) a.onclick = PopWin;
}
}

function PopWin(e) {

// Accommodate IE's non-standard event handling.
if (!e) var e = window.event;
var a = e.target ? e.target : e.srcElement;

// Open a new window with the link's href.
var newwin = window.open(a.href);

// The thought is that if the new window didn't open
// (popups blocked or whatever) we want to return
// true so the link is follow normally. Not sure
// if this works, but it doesn't seem to hinder.
return !newwin;                               
}
	
onload = externalLinks;