diff --git a/Grille.php b/Grille.php
index 9b1d750..6a45b5a 100644
--- a/Grille.php
+++ b/Grille.php
@@ -3,7 +3,7 @@
 include_once "dico.php";
 
 
-const MIN_LETTRES = 0;
+const MIN_LETTRES = 1;
 
 
 class Grille {
@@ -42,7 +42,6 @@ class Grille {
     }
 
     public function get_ligne($l, $longueur = 100) {
-        $longueur = min($longueur, $this->largeur);
         $ligne = "";
         for ($i = 0; $i < $longueur; $i++) {
             $ligne .= $this->grille[$l][$i];
@@ -57,7 +56,6 @@ class Grille {
     }
 
     public function get_colonne($c, $longueur = 100) {
-        $longueur = min($longueur, $this->hauteur);
         $colonne = "";
         for ($i = 0; $i < $longueur; $i++) {
             $colonne .= $this->grille[$i][$c];
diff --git a/dico.php b/dico.php
index bee659c..e9dcf08 100644
--- a/dico.php
+++ b/dico.php
@@ -24,7 +24,7 @@ foreach ($dico as $mot => $definition) {
 
 function fisherYatesShuffle(&$items, $seed)
 {
-    @mt_srand($seed);
+    mt_srand($seed);
     for ($i = count($items) - 1; $i > 0; $i--)
     {
         $j = @mt_rand(0, $i);
@@ -32,6 +32,7 @@ function fisherYatesShuffle(&$items, $seed)
         $items[$i] = $items[$j];
         $items[$j] = $tmp;
     }
+    mt_srand();
 }
 
 function mots_espaces($max, $min=0, $seed=0) {
diff --git a/index.php b/index.php
index 7e1a9a8..2aa32ab 100644
--- a/index.php
+++ b/index.php
@@ -3,6 +3,10 @@
 const HAUTEUR_PAR_DEFAUT = 6;
 const LARGEUR_PAR_DEFAUT = 6;
 
+echo "<!--\n";
+var_dump($_SERVER);
+echo "\n-->\n";
+
 
 $id = filter_input(INPUT_GET, 'grille', FILTER_VALIDATE_REGEXP, [
     "options" => [
@@ -11,7 +15,7 @@ $id = filter_input(INPUT_GET, 'grille', FILTER_VALIDATE_REGEXP, [
 ]);
 if (!$id) {
     $_GET["grille"] = uniqid();
-    header("Location: " . $_SERVER['PHP_SELF'] . "?" . http_build_query($_GET));
+    header("Location: " . $_SERVER['REQUEST_URI'] . "?" . http_build_query($_GET));
     exit;
 }
 
diff --git a/script.js b/script.js
index 72c1475..3123f0e 100644
--- a/script.js
+++ b/script.js
@@ -19,20 +19,26 @@ inputs.forEach(input => {
     };
 
     input.onkeydown = function (event) {
+        next_input = null;
         switch (event.key) {
             case 'ArrowUp':
-                inputs[(input.index - largeur + nb_cases) % nb_cases].focus();
+                next_input = inputs[(input.index - largeur + nb_cases) % nb_cases];
                 break;
             case 'ArrowDown':
-                inputs[(input.index + largeur) % nb_cases].focus();
+                next_input = inputs[(input.index + largeur) % nb_cases];
                 break;
             case 'ArrowLeft':
-                inputs[(input.index - 1 + nb_cases) % nb_cases].focus();
+                next_input = inputs[(input.index - 1 + nb_cases) % nb_cases];
                 break;
             case 'ArrowRight':
-                inputs[(input.index + 1) % nb_cases].focus();
+                next_input = inputs[(input.index + 1) % nb_cases];
                 break;
         }
+        if (next_input) {
+            next_input.focus();
+            next_input.select();
+            event.preventDefault();
+        }
     };
 
     input.oninput = function (event) {