Someone

<?php
session_start(); // début de session 
?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>
    <head>
    <body bgcolor="#0D000D">
    <title>Serveur local</title>
  <style type="text/css">
  #sommaire
  {
  text-align:center;
  font-family:comic sans ms, sans-serif;
  position:absolute;
  background-color:cyan;
  left:10px;
  width:150px;
  }

  #page
  {
  color:white;
  position:absolute;
  font-family:comic sans ms, sans-serif;
  background-color:navy;
  left : 200px;
  width:550px;
  }
  </style>
  </head>
  <body>

    <div id="sommaire">
        <h3>Menu du Jour</h3>
        <a href="index.php?page=1">Accueil</a><br/>
        <a href="index.php?page=2">/!\ TRAVAUX /!\</a><br/>
        <a href="index.php?page=3">Connexion</a><br/>
        <a href="index.php?page=4">/!\ TRAVAUX /!\</a><br/>
    </div>

    <div id="page">
        <?php
        if (isset($_GET['page'])) $page=$_GET['page']; else $page='1';
        if ($page!=3) require 'page'.$page.'.html'; else require './login/index.php';
        ?>
    </div>

  </body>
</html>