Include this bit of php at the top of your document, BEFORE the <HTML> and <HEAD> tags:
<!--// START... Copy-->
<td> <--// You can use this anywhere. I choose to use it within table cells (<td>), as tables are how I build pages, but am currently refining css & <div>'s.-->
<!--// START... Copy and Paste From the next line ( you do not need to include this one )-->
<?php
// Define our array of allowed $_GET values - For every spec sheet you creat, You need to add it's name here. - Landis.
$pass = array( 'contact','service', 'about', 'parts', 'catalog', 'new', 'pmservice',
'028','053','245','045','046','042','043','040','052','039','245','248','035','034','014','038','057','056','054','058', //(these are the names of html docs allowed)
);
// If the page is allowed, include it:
if (in_array($_GET['id'], $pass)) {
include ($_SERVER['DOCUMENT_ROOT'] . '/inc/' . $_GET['id'] . '.html'); //(this is where we diclair the extention for the allowed docs in the inc dir)
}
// If there is no $_GET['id'] defined, then serve the homepage:
elseif (!isset($_GET['id'])) {
include ($_SERVER['DOCUMENT_ROOT'] . '/inc/about.html'); //(this is where we diclair what doc will load by default when an id is not found or used)
}
?>
<!--// END... Copy to the line above ( you do not need to include this one either )-->
</td>
</html>