diff --git a/htdocs/admin/menus/other.php b/htdocs/admin/menus/other.php
index 73dc0fe3b85..471edf58e79 100644
--- a/htdocs/admin/menus/other.php
+++ b/htdocs/admin/menus/other.php
@@ -50,25 +50,11 @@ else if ($action == 'disable_hidemenu')
 	exit;
 }
 
-if ($action == 'activate_layoutmenu')
-{
-	dolibarr_set_const($db, "MAIN_MENU_USE_JQUERY_LAYOUT", '1','chaine',0,'',$conf->entity);
-	header("Location: ".$_SERVER["PHP_SELF"]);
-	exit;
-}
-else if ($action == 'disable_layoutmenu')
-{
-	dolibarr_del_const($db, "MAIN_MENU_USE_JQUERY_LAYOUT",$conf->entity);
-	header("Location: ".$_SERVER["PHP_SELF"]);
-	exit;
-}
-
 
 /*
  * View
  */
 
-
 llxHeader('',$langs->trans("Setup"));
 
 print load_fiche_titre($langs->trans("Menus"),'','title_setup');
@@ -119,25 +105,6 @@ else
 print "</td>";
 print '</tr>';
 
-// Use a flip-hide menu
-if (isset($conf->global->MAIN_FEATURES_LEVEL) && $conf->global->MAIN_FEATURES_LEVEL > 1)
-{
-	$var=!$var;
-	print "<tr ".$bc[$var].">";
-	print '<td colspan="3">'.$langs->trans("MenuUseLayout").'</td>';
-	print '<td align="center">';
-	if (empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT))
-	{
-		print '<a href="'.$_SERVER["PHP_SELF"].'?action=activate_layoutmenu">'.img_picto($langs->trans("Disabled"),'switch_off').'</a>';
-	}
-	else
-	{
-		print '<a href="'.$_SERVER["PHP_SELF"].'?action=disable_layoutmenu">'.img_picto($langs->trans("Enabled"),'switch_on').'</a>';
-	}
-	print "</td>";
-	print '</tr>';
-}
-
 print '</table>';
 
 
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 8652af27d82..697b2ab9ab9 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1033,13 +1033,8 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
             else print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/css/'.$jquerytheme.'/jquery-ui.css'.($ext?'?'.$ext:'').'">'."\n";    // JQuery
             print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/plugins/tiptip/tipTip.css'.($ext?'?'.$ext:'').'">'."\n";                           // Tooltip
             print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/plugins/jnotify/jquery.jnotify-alt.min.css'.($ext?'?'.$ext:'').'">'."\n";          // JNotify
-            /*if (! empty($conf->global->MAIN_USE_JQUERY_FILEUPLOAD) || (defined('REQUIRE_JQUERY_FILEUPLOAD') && constant('REQUIRE_JQUERY_FILEUPLOAD')))     // jQuery fileupload
-            {
-                print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/plugins/fileupload/css/jquery.fileupload-ui.css'.($ext?'?'.$ext:'').'">'."\n";
-            }*/
             if (! empty($conf->global->MAIN_USE_JQUERY_DATATABLES) || (defined('REQUIRE_JQUERY_DATATABLES') && constant('REQUIRE_JQUERY_DATATABLES')))     // jQuery datatables
             {
-                //print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/plugins/datatables/css/jquery.dataTables.css'.($ext?'?'.$ext:'').'">'."\n";
                 print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/plugins/datatables/media/css/jquery.dataTables.min.css'.($ext?'?'.$ext:'').'">'."\n";
                 print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/plugins/datatables/extensions/Buttons/css/buttons.dataTables.min.css'.($ext?'?'.$ext:'').'">'."\n";
                 print '<link rel="stylesheet" type="text/css" href="'.DOL_URL_ROOT.'/includes/jquery/plugins/datatables/extensions/ColReorder/css/colReorder.dataTables.min.css'.($ext?'?'.$ext:'').'"></script>'."\n";
@@ -1131,11 +1126,6 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
             else print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/js/jquery-ui.min.js'.($ext?'?'.$ext:'').'"></script>'."\n";
             print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/plugins/tablednd/jquery.tablednd.0.6.min.js'.($ext?'?'.$ext:'').'"></script>'."\n";
             print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/plugins/tiptip/jquery.tipTip.min.js'.($ext?'?'.$ext:'').'"></script>'."\n";
-            // jQuery Layout
-            if (empty($conf->dol_use_jmobile) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT) || defined('REQUIRE_JQUERY_LAYOUT'))
-            {
-                print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/plugins/layout/jquery.layout.min.js'.($ext?'?'.$ext:'').'"></script>'."\n";
-            }
             // jQuery jnotify
             if (empty($conf->global->MAIN_DISABLE_JQUERY_JNOTIFY) && ! defined('DISABLE_JQUERY_JNOTIFY'))
             {
@@ -1374,60 +1364,6 @@ function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $a
 
     if ($conf->use_javascript_ajax)
     {
-        if (empty($conf->dol_use_jmobile) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT))
-        {
-            print '<script type="text/javascript">
-				jQuery(document).ready(function () {
-					jQuery("body").layout(layoutSettings);
-				});
-				var layoutSettings = {
-					name: "mainlayout",
-					defaults: {
-						useStateCookie: true,
-						size: "auto",
-						resizable: false,
-						//paneClass: "none",
-						//resizerClass: "resizer",
-						//togglerClass: "toggler",
-						//buttonClass: "button",
-						//contentSelector: ".content",
-						//contentIgnoreSelector: "span",
-						togglerTip_open: "Close This Pane",
-						togglerTip_closed: "Open This Pane",
-						resizerTip:	"Resize This Pane",
-						fxSpeed: "fast"
-					},
-					west: {
-						paneClass: "leftContent",
-						//spacing_closed:	14,
-						//togglerLength_closed: 14,
-						//togglerAlign_closed: "auto",
-						//togglerLength_open: 0,
-						//	effect defaults - overridden on some panes
-						//slideTrigger_open:	"mouseover",
-						initClosed:	'.(empty($conf->dol_optimize_smallscreen)?'false':'true').',
-						fxName:	"drop",
-						fxSpeed: "fast",
-						fxSettings: { easing: "" }
-					},
-					north: {
-						paneClass: "none",
-						resizerClass: "none",
-						togglerClass: "none",
-						spacing_open: 0,
-						togglerLength_open:	0,
-						togglerLength_closed: -1,
-						slidable: false,
-						fxName:	"none",
-						fxSpeed: "fast"
-					},
-					center: {
-						paneSelector: "#mainContent"
-					}
-				}
-			</script>' . "\n";
-		}
-
 		// Raven.js for client-side Sentry logging support
 		if (array_key_exists('mod_syslog_sentry', $conf->loghandlers) && ! empty($conf->global->SYSLOG_SENTRY_DSN))
 		{
@@ -1448,8 +1384,6 @@ function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $a
      */
     print "\n".'<!-- Start top horizontal -->'."\n";
 
-    if (empty($conf->dol_use_jmobile) && ! empty($conf->use_javascript_ajax) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print '<div class="ui-layout-north"> <!-- Begin top layout -->'."\n";
-
     if (empty($conf->dol_hide_topmenu))
     {
     	print '<div class="side-nav-vert"><div id="id-top">';
@@ -1579,11 +1513,10 @@ function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $a
 	    //unset($form);
     }
 
-    if (empty($conf->dol_use_jmobile) && ! empty($conf->use_javascript_ajax) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print "</div><!-- End top layout -->\n";
 	print '<div style="clear: both;"></div>';
     print "<!-- End top horizontal menu -->\n\n";
 
-    if (empty($conf->dol_hide_leftmenu) && empty($conf->dol_use_jmobile) && empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print '<div id="id-container">';
+    if (empty($conf->dol_hide_leftmenu) && empty($conf->dol_use_jmobile)) print '<div id="id-container">';
 }
 
 
@@ -1616,8 +1549,7 @@ function left_menu($menu_array_before, $helppagename='', $notused='', $menu_arra
 	    // Instantiate hooks of thirdparty module
 	    $hookmanager->initHooks(array('searchform','leftblock'));
 
-    	if (empty($conf->dol_use_jmobile) && ! empty($conf->use_javascript_ajax) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print "\n".'<!-- Begin left layout -->'."\n".'<div class="ui-layout-west">'."\n";
-		else print "\n".'<!-- Begin id-left -->'."\n".'<div class="side-nav"><div id="id-left">'."\n";
+		print "\n".'<!-- Begin id-left -->'."\n".'<div class="side-nav"><div id="id-left">'."\n";
 
 	    print "\n";
 
@@ -1779,8 +1711,7 @@ function left_menu($menu_array_before, $helppagename='', $notused='', $menu_arra
 	    $reshook=$hookmanager->executeHooks('printLeftBlock',$parameters);    // Note that $action and $object may have been modified by some hooks
 	    print $hookmanager->resPrint;
 
-	    if (empty($conf->dol_use_jmobile) && ! empty($conf->use_javascript_ajax) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print '</div> <!-- End left layout -->'."\n";
-	    else print '</div></div> <!-- end id-left -->';	// End div id="id-left"
+	    print '</div></div> <!-- end id-left -->';	// End div id="id-left"
     }
 
     print "\n";
@@ -1800,7 +1731,6 @@ function main_area($title='')
 {
     global $conf, $langs;
 
-    if (empty($conf->dol_use_jmobile) && ! empty($conf->use_javascript_ajax) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print '<div id="mainContent"><div class="ui-layout-center"> <!-- begin main layout -->'."\n";
 	if (empty($conf->dol_hide_leftmenu)) print '<div id="id-right">';
 
     print "\n";
@@ -1944,7 +1874,6 @@ if (! function_exists("llxFooter"))
         print '</div> <!-- End div class="fiche" -->'."\n";
         if (! empty($conf->dol_use_jmobile)) print '</div>';	// end data-role="page"
 
-        if (empty($conf->dol_use_jmobile) && ! empty($conf->use_javascript_ajax) && ! empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print '</div></div> <!-- end main layout -->'."\n";
 		if (empty($conf->dol_hide_leftmenu)) print '</div> <!-- End div id-right -->'; // End div id-right
 
         print "\n";
@@ -1953,7 +1882,7 @@ if (! function_exists("llxFooter"))
         printCommonFooter($zone);
         //var_dump($langs);		// Uncommment to see the property _tab_loaded to see which language file were loaded
 
-        if (empty($conf->dol_hide_leftmenu) && empty($conf->dol_use_jmobile) && empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT)) print '</div> <!-- End div id-container -->'."\n";	// End div container
+        if (empty($conf->dol_hide_leftmenu) && empty($conf->dol_use_jmobile)) print '</div> <!-- End div id-container -->'."\n";	// End div container
 
         if (! empty($delayedhtmlcontent)) print $delayedhtmlcontent;
 
diff --git a/htdocs/theme/eldy/style.css.php b/htdocs/theme/eldy/style.css.php
index b772f741219..7454229aec0 100644
--- a/htdocs/theme/eldy/style.css.php
+++ b/htdocs/theme/eldy/style.css.php
@@ -646,7 +646,7 @@ td.showDragHandle {
 
 
 div.fiche {
-	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:((empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT))?($dol_hide_leftmenu?'6':'20'):'24')); ?>px;
+	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:($dol_hide_leftmenu?'6':'20')); ?>px;
 	margin-<?php print $right; ?>: <?php print (GETPOST("optioncss") == 'print'?8:(empty($conf->dol_optimize_smallscreen)?'12':'6')); ?>px;
 	<?php if (! empty($conf->dol_hide_leftmenu) && ! empty($conf->dol_hide_topmenu)) print 'margin-top: 4px;'; ?>
 }
@@ -683,7 +683,7 @@ div.ficheaddleft {
 @media only screen and (max-width: 900px)
 {
     div.fiche {
-    	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:((empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT))?($dol_hide_leftmenu?'6':'20'):'24')); ?>px;
+    	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:($dol_hide_leftmenu?'6':'20')); ?>px;
     	margin-<?php print $right; ?>: <?php print (GETPOST("optioncss") == 'print'?8:6); ?>px;
     	<?php if (! empty($conf->dol_hide_leftmenu) && ! empty($conf->dol_hide_topmenu)) print 'margin-top: 4px;'; ?>
     }
diff --git a/htdocs/theme/md/style.css.php b/htdocs/theme/md/style.css.php
index 9644232d2c6..78a8eaf79b2 100644
--- a/htdocs/theme/md/style.css.php
+++ b/htdocs/theme/md/style.css.php
@@ -699,7 +699,7 @@ td.showDragHandle {
 
 
 div.fiche {
-	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:((empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT))?($dol_hide_leftmenu?'4':'20'):'24')); ?>px;
+	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:($dol_hide_leftmenu?'4':'20')); ?>px;
 	margin-<?php print $right; ?>: <?php print (GETPOST("optioncss") == 'print'?8:(empty($conf->dol_optimize_smallscreen)?'16':'4')); ?>px;
 	<?php if (! empty($conf->dol_hide_leftmenu) && ! empty($conf->dol_hide_topmenu)) print 'margin-top: 4px;'; ?>
 	margin-bottom: 15px;
@@ -737,7 +737,7 @@ div.ficheaddleft {
 @media only screen and (max-width: 900px)
 {
     div.fiche {
-    	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:((empty($conf->global->MAIN_MENU_USE_JQUERY_LAYOUT))?($dol_hide_leftmenu?'4':'20'):'24')); ?>px;
+    	margin-<?php print $left; ?>: <?php print (GETPOST("optioncss") == 'print'?6:($dol_hide_leftmenu?'4':'20')); ?>px;
     	margin-<?php print $right; ?>: <?php print (GETPOST("optioncss") == 'print'?8:16); ?>px;
     	<?php if (! empty($conf->dol_hide_leftmenu) && ! empty($conf->dol_hide_topmenu)) print 'margin-top: 4px;'; ?>
     	margin-bottom: 15px;