Return a 404 error when a page does not exist

public_html/rewrite.php

@@ -60,7 +60,15 @@ foreach($routes as $category => $items)
 
 /* Route the actual request */
 
-$router->RouteRequest();
+try
+{
+	$router->RouteRequest();
+}
+catch (RouterException $e)
+{
+	http_status_code(404);
+	$sPageContents = NewTemplater::Render("error/404", $locale->strings, array());
+}
 
 /* Render the resulting page */
 

public_html/templates/error/404.tpl

@@ -0,0 +1,4 @@
+<section>
+	<h2>404 Page not found</h2>
+	The requested page could not be found.
+</section>