diff --git a/__cms__/code/modules/admin/connexion.php b/__cms__/code/modules/admin/connexion.php
index d2085b2..5c6a452 100644
--- a/__cms__/code/modules/admin/connexion.php
+++ b/__cms__/code/modules/admin/connexion.php
@@ -8,7 +8,7 @@ class AdminConnexion {
 			} else {
 				return self::vue($chemin, "connexion échouée");
 			}
-		} else if ($action == "déconnexion") {
+		} else if ($action == "deconnexion") {
 			Authentification::déconnexion();
 			return self::vue($chemin, "déconnexion");
 		} else {
diff --git a/__cms__/code/modules/modules.php b/__cms__/code/modules/modules.php
index eb5d13b..2e63a92 100644
--- a/__cms__/code/modules/modules.php
+++ b/__cms__/code/modules/modules.php
@@ -10,12 +10,12 @@ class Modules {
 			"post" => qw($post),
 			"file" => qw($file)
 		);
-                self::$liste_modules[$type]["get_post"][] = "action"; // Toujours présent.
+		self::$liste_modules[$type]["get_post"][] = "action"; // Toujours présent.
 	}
 	
 	public static function get_module($chemin) {
 		$type = Stockage::get_prop($chemin, "type");
-		if ($type === false || !isset(self::$liste_modules[$type])) {
+		if (Erreur::is_erreur($type) || !isset(self::$liste_modules[$type])) {
 			Erreur::fatale("Type inconnu (" . var_export($type, true) . ") pour la page " . $chemin->get() . ".");
 			// return false;
 		}
diff --git a/__cms__/code/securite/authentification.php b/__cms__/code/securite/authentification.php
index 5f5f3dd..924a581 100644
--- a/__cms__/code/securite/authentification.php
+++ b/__cms__/code/securite/authentification.php
@@ -20,7 +20,7 @@ class Authentification {
 	}
 	
 	public static function est_connecté() {
-		return get_utilisateur() == "Anonyme";
+		return self::get_utilisateur() != "Anonyme";
 	}
 	
 	public static function déconnexion() {
diff --git a/__cms__/code/securite/erreur.php b/__cms__/code/securite/erreur.php
index aa88833..a5f0644 100644
--- a/__cms__/code/securite/erreur.php
+++ b/__cms__/code/securite/erreur.php
@@ -28,7 +28,7 @@ class Erreur {
 	}
 	
 	public static function lecture($message) {
-		$t = new self("lecture", $message);
+		return new self("lecture", $message);
 	}
 	
 	public function __construct($type, $message, $string = "[debug:erreur]") {
diff --git a/__cms__/code/site/squelette.php b/__cms__/code/site/squelette.php
index ee73c54..de10d4b 100644
--- a/__cms__/code/site/squelette.php
+++ b/__cms__/code/site/squelette.php
@@ -12,29 +12,36 @@ class Squelette {
 		// TODO : chemin css relatif.
 		$racine = new Chemin('/');
 		$chemin_css = $racine->get_url('?vue=css');
-        return
-'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr" lang="fr">
-	<head>
-		<title>' . $page->titre . '</title>
-		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-		<meta http-equiv="Content-Language" content="fr" />
-		<link href="' . $chemin_css . '" rel="stylesheet" type="text/css" />
-	</head>
-	<body>
-		<h1><a href="' . $racine->get_url() . '">' . Stockage::get_prop($racine, "nom_site") . '</a></h1>
-		<div class="site connexion">
-			<a href="' . $racine->enfant("admin")->enfant("connexion")->get_url() . '">connexion</a>
-		</div>
-		<div class="site navigation">
-			<ul>
-				<li><a href="' . $racine->enfant("galerie")->get_url() . '">Galerie</a></li>
-			</ul>
-		</div>
-		<div class="site contenu">
-';
-//		<meta name="keywords" lang="fr" content="motcle1,mocle2" />
-//		<meta name="description" content="Description de ma page web." />
+		$nl = "\n";
+        $ret = '';
+		$ret .= '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">' . $nl;
+		$ret .= '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr" lang="fr">' . $nl;
+		$ret .= '	<head>' . $nl;
+		$ret .= '		<title>' . $page->titre . '</title>' . $nl;
+		$ret .= '		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' . $nl;
+		$ret .= '		<meta http-equiv="Content-Language" content="fr" />' . $nl;
+		$ret .= '		<meta name="keywords" lang="fr" content="motcle1,mocle2" />' . $nl;
+		$ret .= '		<meta name="description" content="Description de ma page web." />' . $nl;
+		$ret .= '		<link href="' . $chemin_css . '" rel="stylesheet" type="text/css" />' . $nl;
+		$ret .= '	</head>' . $nl;
+		$ret .= '	<body>' . $nl;
+		$ret .= '		<h1><a href="' . $racine->get_url() . '">' . Stockage::get_prop($racine, "nom_site") . '</a></h1>' . $nl;
+		$ret .= '		<div class="site connexion">' . $nl;
+		
+		if (Authentification::est_connecté()) {
+			$ret .= '<a href="' . $racine->enfant("admin")->enfant("connexion")->get_url("?action=deconnexion") . '">déconnexion</a>' . $nl;
+		} else {
+			$ret .= '<a href="' . $racine->enfant("admin")->enfant("connexion")->get_url() . '">connexion</a>' . $nl;
+		}
+		
+		$ret .= '		</div>' . $nl;
+		$ret .= '		<div class="site navigation">' . $nl;
+		$ret .= '			<ul>' . $nl;
+		$ret .= '				<li><a href="' . $racine->enfant("galerie")->get_url() . '">Galerie</a></li>' . $nl;
+		$ret .= '			</ul>' . $nl;
+		$ret .= '		</div>' . $nl;
+		$ret .= '		<div class="site contenu">' . $nl;
+		return $ret;
     }
     
     public static function pied() {
