<?php

$galleries_base_dir = "/path/to/galleries";
$default_gallery = "default_gallery";
$pages_base_dir = "/path/to/pages";
$default_page = "home";

if(isset($_GET['page'])) {
    $page = $_GET['page'];
} else {
    $page = $default_page;
}

if(isset($_GET['gallery'])) {
    $gallery = $_GET['gallery'];
} else {
    $gallery = $default_gallery;
}

include("header.php");

switch($page) {
    case "gallery":
        $gallery_path = "{$galleries_base_dir}/{$gallery}.php";
        if(file_exists($gallery_path)) {
            include($gallery_path);
        } else {
            include("{$galleries_base_dir}/{$default_gallery}.php");
        }
    break;
    default:
        $page_path = "{$pages_base_dir}/{$page}.php";
        if(file_exists($page_set)) {
            include($page_path);
        } else {
            include("{$pages_base_dir}/{$default_page}.php");
        }
    break;
}


include("footer.php");

?>