diff --git a/htdocs/core/js/lib_head.js.php b/htdocs/core/js/lib_head.js.php
index 9f8fda42d61..a35fee85d0a 100644
--- a/htdocs/core/js/lib_head.js.php
+++ b/htdocs/core/js/lib_head.js.php
@@ -524,8 +524,9 @@ function hideMessage(fieldId,message) {
  * @param	int		entity		Entity
  * @param	int		strict		Strict
  * @param   int     forcereload Force reload
+ * @param   int     userid      User id
  */
-function setConstant(url, code, input, entity, strict, forcereload) {
+function setConstant(url, code, input, entity, strict, forcereload, userid) {
 	$.get( url, {
 		action: "set",
 		name: code,
@@ -593,8 +594,9 @@ function setConstant(url, code, input, entity, strict, forcereload) {
  * @param	int		entity		Entity
  * @param	int		strict		Strict
  * @param   int     forcereload Force reload
+ * @param   int     userid      User id
  */
-function delConstant(url, code, input, entity, strict, forcereload) {
+function delConstant(url, code, input, entity, strict, forcereload, userid) {
 	$.get( url, {
 		action: "del",
 		name: code,
@@ -661,8 +663,9 @@ function delConstant(url, code, input, entity, strict, forcereload) {
  * @param	int		yesButton	yesButton
  * @param	int		noButton	noButton
  * @param	int		strict		Strict
+ * @param   int     userid      User id
  */
-function confirmConstantAction(action, url, code, input, box, entity, yesButton, noButton, strict) {
+function confirmConstantAction(action, url, code, input, box, entity, yesButton, noButton, strict, userid) {
 	var boxConfirm = box;
 	$("#confirm_" + code)
 			.attr("title", boxConfirm.title)
@@ -678,9 +681,9 @@ function confirmConstantAction(action, url, code, input, box, entity, yesButton,
 						text : yesButton,
 						click : function() {
 							if (action == "set") {
-								setConstant(url, code, input, entity, strict);
+								setConstant(url, code, input, entity, strict, 0, userid);
 							} else if (action == "del") {
-								delConstant(url, code, input, entity, strict);
+								delConstant(url, code, input, entity, strict, 0, userid);
 							}
 							// Close dialog
 							$(this).dialog("close");
diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index 58567748f7f..c29b82f4329 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -485,7 +485,7 @@ function ajax_combobox($htmlname, $events = array(), $minLengthToAutocomplete =
  */
 function ajax_constantonoff($code, $input = array(), $entity = null, $revertonoff = 0, $strict = 0, $forcereload = 0, $marginleftonlyshort = 2)
 {
-	global $conf, $langs;
+	global $conf, $langs, $user;
 
 	$entity = ((isset($entity) && is_numeric($entity) && $entity >= 0) ? $entity : $conf->entity);
 
@@ -504,6 +504,7 @@ function ajax_constantonoff($code, $input = array(), $entity = null, $revertonof
 				var code = \''.$code.'\';
 				var entity = \''.$entity.'\';
 				var strict = \''.$strict.'\';
+				var userid = \''.$user->id.'\';
 				var yesButton = "'.dol_escape_js($langs->transnoentities("Yes")).'";
 				var noButton = "'.dol_escape_js($langs->transnoentities("No")).'";
 
@@ -512,9 +513,9 @@ function ajax_constantonoff($code, $input = array(), $entity = null, $revertonof
 					if (input.alert && input.alert.set) {
 						if (input.alert.set.yesButton) yesButton = input.alert.set.yesButton;
 						if (input.alert.set.noButton)  noButton = input.alert.set.noButton;
-						confirmConstantAction("set", url, code, input, input.alert.set, entity, yesButton, noButton, strict);
+						confirmConstantAction("set", url, code, input, input.alert.set, entity, yesButton, noButton, strict, userid);
 					} else {
-						setConstant(url, code, input, entity, 0, '.$forcereload.');
+						setConstant(url, code, input, entity, 0, '.$forcereload.', userid);
 					}
 				});
 
@@ -523,9 +524,9 @@ function ajax_constantonoff($code, $input = array(), $entity = null, $revertonof
 					if (input.alert && input.alert.del) {
 						if (input.alert.del.yesButton) yesButton = input.alert.del.yesButton;
 						if (input.alert.del.noButton)  noButton = input.alert.del.noButton;
-						confirmConstantAction("del", url, code, input, input.alert.del, entity, yesButton, noButton, strict);
+						confirmConstantAction("del", url, code, input, input.alert.del, entity, yesButton, noButton, strict, userid);
 					} else {
-						delConstant(url, code, input, entity, 0, '.$forcereload.');
+						delConstant(url, code, input, entity, 0, '.$forcereload.', userid);
 					}
 				});
 			});
diff --git a/htdocs/core/lib/usergroups.lib.php b/htdocs/core/lib/usergroups.lib.php
index a6fc287d0cf..2b510373299 100644
--- a/htdocs/core/lib/usergroups.lib.php
+++ b/htdocs/core/lib/usergroups.lib.php
@@ -942,6 +942,7 @@ function showSkins($fuser, $edit = 0, $foruserprofile = false)
 	    print '<tr class="oddeven">';
 	    print '<td>'.$langs->trans("MAIN_OPTIMIZEFORTEXTBROWSER").'</td>';
 	    print '<td colspan="'.($colspan - 1).'">';
+	    //print ajax_constantonoff("MAIN_OPTIMIZEFORTEXTBROWSER", array(), null, 0, 0, 1, 0);
    	    if ($edit)
    	    {
    	        print $form->selectyesno('MAIN_OPTIMIZEFORTEXTBROWSER', $fuser->conf->MAIN_OPTIMIZEFORTEXTBROWSER, 1);