function init() {
	
		// 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('extern') != -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
		// (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 = init;