diff --git a/html/js/scripts.js b/html/js/scripts.js
index d6a4a9d20..2057f2635 100644
--- a/html/js/scripts.js
+++ b/html/js/scripts.js
@@ -2984,8 +2984,11 @@ function show_tabs(a_tabs, p_display_tab)
 {
     try
     {
-        if (a_tabs.length == 0)
-            trow('a_tabs in empty');
+        if (a_tabs.length == 0) {
+            console.error('a_tabs in empty');
+            throw ("a_tabs empty");
+            return;
+        }
         var i = 0;
         for (i = 0; i < a_tabs.length; i++) {
             $(a_tabs[i]).hide();
@@ -4041,4 +4044,14 @@ function full_size(p_div) {
         div_dom.addClassName('fullsize');$('size_'+p_div).innerHTML='&#xe83d;';
     }
     
+}
+
+/**
+ * @brief download a document from an url
+ */
+function download_document(p_url) 
+{
+    waiting_box();
+    document.location=p_url;
+    remove_waiting_box();
 }
\ No newline at end of file
diff --git a/include/class/document.class.php b/include/class/document.class.php
index d3c5abbaf..2c7a8dc40 100644
--- a/include/class/document.class.php
+++ b/include/class/document.class.php
@@ -58,9 +58,9 @@ class Document
         $this->counter=0;
     }
 
-    /* !\brief insert a minimal document and set the d_id
+    /**
+     * @brief insert a minimal document and set the d_id
      */
-
     function blank()
     {
         $this->d_id=$this->db->get_next_seq("document_d_id_seq");
@@ -76,7 +76,7 @@ class Document
     }
 
     /**
-     * Insert the receipt number into the filename , each generated file
+     * @brief Insert the receipt number into the filename , each generated file
      * will have the name of the template (model) + receipt number)
      * @param type $pj the receipt number
      * @param type $filename the name of the file
@@ -352,15 +352,93 @@ class Document
         $this->db->commit();
         return 0;
     }
-
-    /* ! upload
-     * \brief upload a file into document
-     *  all the needed data are in $_FILES we don't increment the seq
-     * \param $p_file : array containing by default $_FILES
-     *
-     * \return
+    
+    /**
+     * @brief Download all documents in a ZIP files. The parameters is an array of Document, see 
+     * DOcument::get_all
+     * 
+     * @param array of Document $aDocument
+     * 
+     * @see Document::get_all()
      */
+    function download($aDocument)
+    {
+        
+        if (empty($aDocument)||is_array($aDocument)==false)
+        {
+            throw new Exception("Document.download expects an array");
+        }
+        // make a temp folder
+        $dirname=tempnam($_ENV['TMP'], 'document_dwnall');
+        unlink($dirname);
+        mkdir($dirname);
 
+        // download each file into that folder
+        $nb_document=count($aDocument);
+        $nCopy=0;
+        
+        // start a transaction to be able to export LOB
+        $this->db->start();
+        for ($i=0; $i<$nb_document; $i++)
+        {
+            // check that aDocument elt is a document object
+            if ( ! $aDocument[$i] instanceof  Document ) {
+                throw new Exception("Document.download.2 element is not a document object");
+            }
+            $filename=$dirname.DIRECTORY_SEPARATOR.$aDocument[$i]->d_filename;
+            // if file exists then add a number
+            if (file_exists($filename))
+            {
+
+                while (true)
+                {
+                    $nCopy++;
+                    $filename=$dirname.DIRECTORY_SEPARATOR.$nCopy."-".$aDocument[$i]->d_filename;
+                    if (!file_exists($filename))
+                    {
+                        $nCopy=0;
+                        break;
+                    }
+                } // end while true
+            } // end if fileexist
+            // export file
+            $this->db->lo_export($aDocument[$i]->d_lob,$filename);
+        } // end for $i 
+        // make a large PDF and send it
+        $zip=new Zip_Extended();
+        $name="document-".date ("Ymd-His").".zip";
+        if ( $zip->open($_ENV['TMP'].DIRECTORY_SEPARATOR.$name , ZipArchive::CREATE) != true)
+        {
+              die("Cannot create zip file");
+        }
+        $zip->add_recurse_folder($dirname . "/");
+        $zip->close();
+        // send it to stdout
+        ini_set('zlib.output_compression', 'off');
+        header("Pragma: public");
+        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
+        header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
+        header("Cache-Control: must-revalidate");
+        header('Content-type: zip/application');
+        header('Content-Disposition: attachment;filename="'.$name.'"', FALSE);
+        header("Accept-Ranges: bytes");
+        $file=fopen($_ENV['TMP'].DIRECTORY_SEPARATOR.$name, 'r');
+        while (!feof($file))
+        {
+            echo fread($file, 8192);
+        }
+        fclose($file);
+
+        $this->db->commit();
+        
+    }
+
+    /**
+     * @brief upload a file into document
+     *  all the needed data are in $_FILES we don't increment the seq
+     * @param $p_file : array containing by default $_FILES
+     *
+     */
     function upload($p_ag_id)
     {
         // nothing to save
@@ -505,6 +583,7 @@ class Document
         }
         return $a;
     }
+    
 
     /* !\brief Get  complete all the data member thx info from the database
      */
diff --git a/include/export/export_document.php b/include/export/export_document.php
index 1fd7d71b1..1924386d4 100644
--- a/include/export/export_document.php
+++ b/include/export/export_document.php
@@ -21,7 +21,12 @@
 // Verify parameters
 /** 
  * \file
- * \brief retrieve a document
+ * \brief retrieve a document. It received http variables :
+ *      - a is the action : rm remove document, rmop: remove an operation : rmcomment , remove a comment,
+ *                      rmaction remove an action,dwnall download all document of an action into  a zip 
+ *      - id number
+ *      - ag_id action_gestion.ag_id
+ * 
  */
 if ( ! defined ('ALLOWED')) die (_('Non autorisé'));
 
@@ -31,6 +36,7 @@ require_once NOALYSS_INCLUDE.'/class/dossier.class.php';
 require_once NOALYSS_INCLUDE.'/lib/http_input.class.php';
 $http=new HttpInput();
 
+// the parameter a is the action for the document, 
 $action = (isset($_REQUEST['a'])) ? $_REQUEST['a'] : 'sh';
 
 $id=$http->request('id','number','0');
@@ -102,3 +108,28 @@ if ($action == 'rmaction')
 	header("Content-type: text/html; charset: utf8", true);
 	print $json;
 }
+/**
+ * Download all document into a zip 
+ */
+if ($action == 'dwnall') {
+    // existing action ?
+    if ($ag_id == 0) {
+     throw new Exception("Action inconnue");
+    }
+    // check that user can read 
+    if (    $g_user->can_read_action($ag_id) == false 
+            || $g_user->check_action(VIEWDOC) == 0)
+    {
+            throw new Exception ("not allowed");
+    }
+    
+    // Retrieve all documents
+    $document=new Document($cn);
+    $aDocument=$document->get_all($ag_id);
+    
+    // Download all of them
+    $document->download($aDocument);
+    
+    
+    
+}
\ No newline at end of file
diff --git a/include/template/detail-action.php b/include/template/detail-action.php
index 9d59d6851..99d70b320 100644
--- a/include/template/detail-action.php
+++ b/include/template/detail-action.php
@@ -490,6 +490,18 @@ for ($i=0;$i<sizeof($aAttachedFile);$i++) :
 endfor;
   ?>
   </table>
+<?php if ( ! empty ($aAttachedFile)) :
+    /*** Propose to download all document in only one step */
+    $url="export.php?".http_build_query([ 
+        'ac'=>"FOLLOW",
+        "act"=>"RAW:document",
+        "gDossier"=>Dossier::id(),
+        "d_id"=>0,
+        "ag_id"=>$this->ag_id,
+        "a"=>"dwnall"]);
+    echo HtmlInput::button_anchor(_("Télécharger toutes les documents"), "", uniqid(),sprintf("onclick=\"download_document('%s')\"",$url));
+    
+endif;?>
   </div>
   <script language="javascript">
 function addFiles() {