diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index f2427056fb5..d5ada748c1f 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -5215,15 +5215,16 @@ class Form
      */
     static function selectArrayAjax($htmlname, $url, $id='', $moreparam='', $moreparamtourl='', $disabled=0, $minimumInputLength=1, $morecss='', $callurlonselect=0, $placeholder='', $acceptdelayedhtml=0)
     {
-        global $langs;
+        global $conf, $langs;
         global $delayedhtmlcontent;
 
-    	$tmpplugin='select2';
+    	// TODO Use an internal dolibarr component instead of select2
+        if (empty($conf->global->MAIN_USE_JQUERY_MULTISELECT) && ! defined('REQUIRE_JQUERY_MULTISELECT')) return '';
 
     	$out='<input type="text" class="'.$htmlname.($morecss?' '.$morecss:'').'" '.($moreparam?$moreparam.' ':'').'name="'.$htmlname.'">';
 
-    	// TODO Use an internal dolibarr component instead of select2
-    	$outdelayed='<!-- JS CODE TO ENABLE '.$tmpplugin.' for id '.$htmlname.' -->
+    	$tmpplugin='select2';
+    	$outdelayed="\n".'<!-- JS CODE TO ENABLE '.$tmpplugin.' for id '.$htmlname.' -->
 	    	<script type="text/javascript">
 	    	$(document).ready(function () {
 
@@ -5325,7 +5326,7 @@ class Form
     	if (! empty($conf->global->MAIN_USE_JQUERY_MULTISELECT) || defined('REQUIRE_JQUERY_MULTISELECT'))
     	{
     		$tmpplugin=empty($conf->global->MAIN_USE_JQUERY_MULTISELECT)?constant('REQUIRE_JQUERY_MULTISELECT'):$conf->global->MAIN_USE_JQUERY_MULTISELECT;
-   			$out.='<!-- JS CODE TO ENABLE '.$tmpplugin.' for id '.$htmlname.' -->
+   			$out.="\n".'<!-- JS CODE TO ENABLE '.$tmpplugin.' for id '.$htmlname.' -->
     			<script type="text/javascript">
 	    			function formatResult(record) {'."\n";
 						if ($elemtype == 'category')
diff --git a/htdocs/core/js/lib_head.js.php b/htdocs/core/js/lib_head.js.php
index 55055792510..46219f1b50e 100644
--- a/htdocs/core/js/lib_head.js.php
+++ b/htdocs/core/js/lib_head.js.php
@@ -45,6 +45,35 @@ if (empty($dolibarr_nocache)) header('Cache-Control: max-age=3600, public, must-
 else header('Cache-Control: no-cache');
 ?>
 
+
+
+/**
+ * Set select2 translations (if module was loaded).
+ */
+(function ($) {
+    "use strict";
+
+    if (typeof $.fn.select2 != "undefined") {
+	/* console.log($.fn.select2);
+    console.log("ok"); */
+
+    $.fn.select2.locales['xx'] = {
+        formatMatches: function (matches) { return matches + " <?php echo dol_escape_js($langs->trans("Select2ResultFoundUseArrows")); ?>"; },
+        formatNoMatches: function () { return "<?php echo dol_escape_js($langs->trans("Select2NotFound")); ?>"; },
+        formatInputTooShort: function (input, min) { var n = min - input.length;
+        	if (n > 1) return "<?php echo dol_escape_js($langs->trans("Select2Enter")); ?> " + n + " <?php echo dol_escape_js($langs->trans("Select2MoreCharacters")); ?>";
+        	else return "<?php echo dol_escape_js($langs->trans("Select2Enter")); ?> " + n + " <?php echo dol_escape_js($langs->trans("Select2MoreCharacter")); ?>"
+        	},
+        formatLoadMore: function (pageNumber) { return "<?php echo dol_escape_js($langs->trans("Select2LoadingMoreResults")); ?>"; },
+        formatSearching: function () { return "<?php echo dol_escape_js($langs->trans("Select2SearchInProgress")); ?>"; }
+    };
+
+    $.extend($.fn.select2.defaults, $.fn.select2.locales['xx']);
+
+    }
+})(jQuery);
+
+
 /*
  * =================================================================
  * Purpose:
diff --git a/htdocs/core/js/select2_locale.js.php b/htdocs/core/js/select2_locale.js.php
deleted file mode 100644
index aa62b5a0ec1..00000000000
--- a/htdocs/core/js/select2_locale.js.php
+++ /dev/null
@@ -1,67 +0,0 @@
-<?php
-/* Copyright (C) 2012	Regis Houssin		<regis.houssin@capnetworks.com>
- * Copyright (C) 2012	Laurent Destailleur	<eldy@users.sourceforge.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/**
- * \file       htdocs/core/js/select2_locale.js.php
- * \brief      File that include javascript functions for timepicker
- */
-
-//if (! defined('NOREQUIREUSER')) define('NOREQUIREUSER','1');	// Not disabled cause need to load personalized language
-//if (! defined('NOREQUIREDB'))   define('NOREQUIREDB','1');
-if (! defined('NOREQUIRESOC'))    define('NOREQUIRESOC','1');
-//if (! defined('NOREQUIRETRAN')) define('NOREQUIRETRAN','1');	// Not disabled cause need to do translations
-if (! defined('NOCSRFCHECK'))     define('NOCSRFCHECK',1);
-if (! defined('NOTOKENRENEWAL'))  define('NOTOKENRENEWAL',1);
-if (! defined('NOLOGIN'))         define('NOLOGIN',1);
-if (! defined('NOREQUIREMENU'))   define('NOREQUIREMENU',1);
-if (! defined('NOREQUIREHTML'))   define('NOREQUIREHTML',1);
-if (! defined('NOREQUIREAJAX'))   define('NOREQUIREAJAX','1');
-
-session_cache_limiter(FALSE);
-
-require_once '../../main.inc.php';
-
-// Define javascript type
-top_httphead('text/javascript; charset=UTF-8');
-// Important: Following code is to avoid page request by browser and PHP CPU at each Dolibarr page access.
-if (empty($dolibarr_nocache)) header('Cache-Control: max-age=3600, public, must-revalidate');
-else header('Cache-Control: no-cache');
-?>
-
-/**
- * Select2 French translation
- */
-(function ($) {
-    "use strict";
-
-    $.fn.select2.locales['xx'] = {
-        formatMatches: function (matches) { return matches + " <?php echo dol_escape_js($langs->trans("Select2ResultFoundUseArrows")); ?>"; },
-        formatNoMatches: function () { return "<?php echo dol_escape_js($langs->trans("Select2NotFound")); ?>"; },
-        formatInputTooShort: function (input, min) { var n = min - input.length; 
-        	if (n > 1) return "<?php echo dol_escape_js($langs->trans("Select2Enter")); ?> " + n + " <?php echo dol_escape_js($langs->trans("Select2MoreCharacters")); ?>"; 
-        	else return "<?php echo dol_escape_js($langs->trans("Select2Enter")); ?> " + n + " <?php echo dol_escape_js($langs->trans("Select2MoreCharacter")); ?>"
-        	},
-        formatLoadMore: function (pageNumber) { return "<?php echo dol_escape_js($langs->trans("Select2LoadingMoreResults")); ?>"; },
-        formatSearching: function () { return "<?php echo dol_escape_js($langs->trans("Select2SearchInProgress")); ?>"; }
-    };
-
-    $.extend($.fn.select2.defaults, $.fn.select2.locales['xx']);
-})(jQuery);
-
-<?php
-if (is_object($db)) $db->close();
diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index dc86a2ef9f3..3cc767c1592 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -396,14 +396,15 @@ function ajax_combobox($htmlname, $events=array(), $minLengthToAutocomplete=0, $
 	global $conf;
 
 	if (! empty($conf->browser->phone)) return '';	// select2 disabled for smartphones with standard browser (does not works, popup appears outside screen)
-	if (! empty($conf->dol_use_jmobile)) return '';	// select2 works with jmobile but it breaks the autosize feature of jmobile.
+	//if (! empty($conf->dol_use_jmobile)) return '';	// select2 works with jmobile but it breaks the autosize feature of jmobile.
 	if (! empty($conf->global->MAIN_DISABLE_AJAX_COMBOX)) return '';
 	if (empty($conf->use_javascript_ajax)) return '';
+	if (empty($conf->global->MAIN_USE_JQUERY_MULTISELECT) && ! defined('REQUIRE_JQUERY_MULTISELECT')) return '';
 
 	if (empty($minLengthToAutocomplete)) $minLengthToAutocomplete=0;
 
     $tmpplugin='select2';
-    $msg='<!-- JS CODE TO ENABLE '.$tmpplugin.' for id = '.$htmlname.' -->
+    $msg="\n".'<!-- JS CODE TO ENABLE '.$tmpplugin.' for id = '.$htmlname.' -->
           <script type="text/javascript">
         	$(document).ready(function () {
         		$(\''.(preg_match('/^\./',$htmlname)?$htmlname:'#'.$htmlname).'\').'.$tmpplugin.'({
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 27168349f22..8f5c5fb11bd 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1281,7 +1281,6 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
             {
             	$tmpplugin=empty($conf->global->MAIN_USE_JQUERY_MULTISELECT)?constant('REQUIRE_JQUERY_MULTISELECT'):$conf->global->MAIN_USE_JQUERY_MULTISELECT;
             	print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/plugins/'.$tmpplugin.'/'.$tmpplugin.'.min.js'.($ext?'?'.$ext:'').'"></script>'."\n";
-                print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/select2_locale.js.php?lang='.$langs->defaultlang.($ext?'&amp;'.$ext:'').'"></script>'."\n";
             }
         }
 
@@ -1321,7 +1320,7 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
 
             // Global js function
             print '<!-- Includes JS of Dolibarr -->'."\n";
-            print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/lib_head.js.php'.($ext?'?'.$ext:'').'"></script>'."\n";
+            print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/lib_head.js.php?lang='.$langs->defaultlang.($ext?'&amp;'.$ext:'').'"></script>'."\n";
 
             // Add datepicker default options
             /*if (! defined('DISABLE_DATE_PICKER'))