Fixed two bugs that show up with some PHP configurations:

* Use of undefined constant MENU_FILE - assumed 'MENU_FILE' (added quotes)
 * Cannot modify header information - headers already sent (extra newlines
   at the end of menu.php)
(ugha)

index.php

@@ -1,9 +1,9 @@
 <?php
 include('menu.php');
 
-define(MENU_FILE,'menu.ini');
-define(PAGE_DIR,'pages/');
-define(PAGE_EXT,'.html');
+define('MENU_FILE','menu.ini');
+define('PAGE_DIR','pages/');
+define('PAGE_EXT','.html');
 
 /* Filter out everything except alphanumerical characters and underscores */
 function form_filter($data) {
@@ -24,7 +24,7 @@ if(is_readable(PAGE_DIR.$page.PAGE_EXT)) {
     include(PAGE_DIR.$page.PAGE_EXT);
     include(PAGE_DIR.'footer'.PAGE_EXT);
 } else {                                                                                            
-    header("HTTP/1.0 404 Not Found");
+    header("Status: 404 Not Found");
     include(PAGE_DIR.'header'.PAGE_EXT);
     print "<h1>Error: Page \"$page\" not found</h1>";
     include(PAGE_DIR.'footer'.PAGE_EXT);

menu.php

@@ -48,5 +48,4 @@ function buildmenu() {
                 }
         }
 }
-?>
-
+?>