diff --git a/html/do.php b/html/do.php
index 4d5ead662..473aa26ff 100644
--- a/html/do.php
+++ b/html/do.php
@@ -30,7 +30,9 @@ require_once('user_common.php');
 require_once('ac_common.php');
 require_once 'function_javascript.php';
 if (isset ($_POST["style_user"])){$_SESSION['g_theme']=$_POST['style_user'];}
-html_page_start();
+
+html_page_start($_SESSION['g_theme']);
+
 global $g_user, $cn;
 
 // if gDossier is not set redirect to form to choose a folder
@@ -50,7 +52,6 @@ if ($g_user->check_dossier(dossier::id()) == 'P')
     exit();
 }
 
-html_page_start($_SESSION['g_theme']);
 load_all_script();
 /*  Check Browser version if < IE6 then unsupported */
 $browser = $_SERVER['HTTP_USER_AGENT'];
diff --git a/include/ac_common.php b/include/ac_common.php
index 9b869a487..c04637b44 100644
--- a/include/ac_common.php
+++ b/include/ac_common.php
@@ -245,12 +245,16 @@ function isDate($p_date)
  * \param p_theme default theme
  * \param $p_script
  * \param $p_script2  another js script
- *
+ * Must be called only once
  * \return none
  */
 
 function html_page_start($p_theme="", $p_script="", $p_script2="")
 {
+    // check not called twiced
+    static  $already_call=0;
+    if ( $already_call==1)return;
+    $already_call=1;
 
     $cn = new Database();
     if ($p_theme != "")
diff --git a/include/function_javascript.php b/include/function_javascript.php
index b17fba213..911999145 100644
--- a/include/function_javascript.php
+++ b/include/function_javascript.php
@@ -2708,7 +2708,7 @@ function unescapebycharacter($str)
 }
 /*!\brief When data are transfered thanks ajax in a xml document, the xml
  * can not contains some character, to escape those characters, we must use this
- * function 
+ * function
  *\param $p_xml the xml to escape
  *\return the xml string with the forbidden char escaped
  *\see ajax_card.js ajaxFid
@@ -2728,6 +2728,11 @@ function escape_xml($p_xml)
  */
 function load_all_script()
 {
+    // check not called twiced
+    static  $already_call=0;
+    if ( $already_call==1)return;
+    $already_call=1;
+
     echo JS_INFOBULLE;
     echo js_include('prototype.js');
     echo js_include('scriptaculous.js');