diff --git a/html/index.php b/html/index.php
index 242fece..af46480 100644
--- a/html/index.php
+++ b/html/index.php
@@ -18,9 +18,28 @@ require_once("../src/functions.php");
 
 $arenas=get_arenas_list();
 $lang=get_language_array();
+
+
+if(isset($_GET['arena'])){
+    //check if arena is list
+    $currentArena = false;
+    foreach($arenas as $arena){
+        if($arena['id'] == $GET['arena']){
+            $currentArena = $GET['arena'];
+            break;
+        }
+    }
+    if(!$currentArena){
+        error("Wrong parameter");
+        die;
+    }
+}else{
+    $currentArena = "";
+}
+
+
 //form submitting
-if (isset($_POST['xd_check']))
-{
+if (isset($_POST['xd_check'])){
 	//vérifier le numero de formulaire
 	if (($_SESSION['xd_check']!=$_POST['xd_check']) AND ($_POST['xd_check'] !="")){
 		erreur ('Something wrong has appen');
@@ -51,7 +70,18 @@ if (isset($_POST['xd_check']))
 <body>
     
   <header>
-  	<nav id="languages"><a href="/fr">fr</a>&nbsp;<a href="/en">en</a></nav>
+  	<nav id="languages"><a href="-fr">fr</a>&nbsp;<a href="-en">en</a></nav>
+  	<nav id="menus"><a href="/"><?php echo $lang['HOME']; ?></a>
+  	<?php
+            foreach($arenas as $arena){
+                if( $arena['id'] == $currentArena){
+                    $class="selected";
+                }else{
+                    $class="";
+                }
+                echo '<a href="'.$arena['url'].'" class="'.$class.'">'.$arena['title'].'</a>';
+            }
+  	?>
     <h1><?php 
     		if(isset($arenas['current'])){ 
     				echo $arenas['current']['title'];
diff --git a/lang/en.php b/lang/en.php
index 59648a8..cdc02e1 100644
--- a/lang/en.php
+++ b/lang/en.php
@@ -1,5 +1,6 @@
 <?php
 $lang=array(
     'SITE_NAME' => 'Artificials Intelligences\' arena',
-    'SITE_DESCRIPTION'  => 'blah blah blah but english'
+    'SITE_DESCRIPTION'  => 'blah blah blah but english',
+    'HOME'  => 'Home page'
 );
\ No newline at end of file
diff --git a/lang/fr.php b/lang/fr.php
index cb8fbfe..26a686a 100644
--- a/lang/fr.php
+++ b/lang/fr.php
@@ -1,5 +1,6 @@
 <?php
 $lang=array(
     'SITE_NAME' => 'Arène pour intelligences (ou persque) artificielles',
-    'SITE_DESCRIPTION'  => 'blah blah blah mais en francais'
+    'SITE_DESCRIPTION'  => 'blah blah blah mais en francais',
+    'HOME'  => 'accueil'
 );
\ No newline at end of file
diff --git a/src/functions.php b/src/functions.php
index cc316b8..41f4d66 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -1,14 +1,6 @@
 <?php
 function  get_arenas_list(){
     include (__DIR__."/arenas_lists.php");
-    if(isset($_GET['arena'])){
-        foreach ($arenas as $arena){
-            if($arena['id'] == $_GET['arena']){
-                $arenas['current'] = $arena;
-                break;
-            }
-        }
-    }
     return $arenas;
 }
 function rand_str($length = 32, $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890'){
