diff --git a/htdocs/core/ajax/ajaxdirpreview.php b/htdocs/core/ajax/ajaxdirpreview.php
index b0f5c89f66d..9bdf51d701e 100644
--- a/htdocs/core/ajax/ajaxdirpreview.php
+++ b/htdocs/core/ajax/ajaxdirpreview.php
@@ -93,34 +93,12 @@ if (preg_match('/\.\./',$upload_dir) || preg_match('/[<>|]/',$upload_dir))
 }
 
 
-
 /*
  * Action
  */
 
-/*
- if ($action == 'remove_file')   // Remove a file
-{
-clearstatcache();
+// None
 
-dol_syslog(__FILE__." remove $original_file $urlsource", LOG_DEBUG);
-
-// This test should be useless. We keep it to find bug more easily
-if (! file_exists($original_file_osencoded))
-{
-dol_print_error(0,$langs->trans("ErrorFileDoesNotExists",$_GET["file"]));
-exit;
-}
-
-dol_delete_file($original_file);
-
-dol_syslog(__FILE__." back to ".urldecode($urlsource), LOG_DEBUG);
-
-header("Location: ".urldecode($urlsource));
-
-return;
-}
-*/
 
 
 /*
@@ -260,6 +238,7 @@ if (! empty($conf->use_javascript_ajax) && empty($conf->global->MAIN_ECM_DISABLE
     if ($section)
     {
         require_once(DOL_DOCUMENT_ROOT.'/core/class/html.form.class.php');
+        $useglobalvars=1;
         $form = new Form($db);
         $formquestion=array('urlfile'=>array('type'=>'hidden','value'=>'','name'=>'urlfile'));
         print $form->formconfirm(DOL_URL_ROOT.'/ecm/index.php'.($param?'?':'').(preg_replace('/^&/','',$param)),$langs->trans("DeleteFile"),$langs->trans("ConfirmDeleteFile"),'confirm_deletefile',$formquestion,"no",'deletefile');
diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 72f3c809d2d..d0f621fd09b 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -2143,6 +2143,7 @@ class Form
     function formconfirm($page, $title, $question, $action, $formquestion='', $selectedchoice="", $useajax=0, $height=170, $width=500)
     {
         global $langs,$conf;
+        global $useglobalvars;
 
         $more='';
         $formconfirm='';
@@ -2241,13 +2242,13 @@ class Form
                 }
             }
 
-            // New code using jQuery only
+            // Show JQuery confirm box. Note that global var $useglobalvars is used inside this template
             include(DOL_DOCUMENT_ROOT.'/core/tpl/ajax/formconfirm.tpl.php');
         }
         else
         {
         	$formconfirm.= "\n<!-- begin form_confirm page=".$page." -->\n";
-        	
+
             $formconfirm.= '<form method="POST" action="'.$page.'" class="notoptoleftroright">'."\n";
             $formconfirm.= '<input type="hidden" name="action" value="'.$action.'">';
             $formconfirm.= '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">'."\n";
@@ -2279,7 +2280,7 @@ class Form
 
             $formconfirm.= "</form>\n";
             $formconfirm.= '<br>';
-            
+
             $formconfirm.= "<!-- end form_confirm -->\n";
         }
 
diff --git a/htdocs/core/tpl/ajax/formconfirm.tpl.php b/htdocs/core/tpl/ajax/formconfirm.tpl.php
index d3367c7a7c1..7f5bb51910e 100644
--- a/htdocs/core/tpl/ajax/formconfirm.tpl.php
+++ b/htdocs/core/tpl/ajax/formconfirm.tpl.php
@@ -25,6 +25,20 @@
 	<?php echo img_help('','').' '.$question; ?>
 </div>
 <script type="text/javascript">
+
+/*
+ * Warning: function is loaded once and not overwritten if loaded by another ajax page.
+ * So if we need inputok/ko and pageyes/no to be different according to ajax calls (to have several confirm box loaded
+ * from different ajax parts of page, we must place such variables outside of function. For this $useglobalvars must be set to 1.
+ */
+
+<?php if (! empty($useglobalvars)) { ?>
+var inputok=<?php echo json_encode($inputok); ?>;
+var inputko=<?php echo json_encode($inputko); ?>;
+var pageyes='<?php echo dol_escape_js($pageyes?$pageyes:''); ?>';
+var pageno='<?php echo dol_escape_js($pageno?$pageno:''); ?>';
+<?php } ?>
+
 $(function() {
 	$( "#<?php echo $dialogconfirm; ?>" ).dialog({
         autoOpen: <?php echo ($autoOpen ? 'true' : 'false'); ?>,
@@ -36,8 +50,10 @@ $(function() {
         buttons: {
             '<?php echo dol_escape_js($langs->transnoentities("Yes")); ?>': function() {
             	var options="";
-             	var inputok = <?php echo json_encode($inputok); ?>;
+                <?php if (empty($useglobalvars)) { ?>
+            	var inputok = <?php echo json_encode($inputok); ?>;
              	var pageyes = '<?php echo dol_escape_js($pageyes?$pageyes:''); ?>';
+                <?php } ?>
              	if (inputok.length>0) {
              		$.each(inputok, function(i, inputname) {
              			var more = '';
@@ -54,8 +70,10 @@ $(function() {
             },
             '<?php echo dol_escape_js($langs->transnoentities("No")); ?>': function() {
             	var options = '';
+                <?php if (empty($useglobalvars)) { ?>
              	var inputko = <?php echo json_encode($inputko); ?>;
              	var pageno='<?php echo dol_escape_js($pageno?$pageno:''); ?>';
+                <?php } ?>
              	if (inputko.length>0) {
              		$.each(inputko, function(i, inputname) {
              			var more = '';
diff --git a/htdocs/ecm/index.php b/htdocs/ecm/index.php
index 05a2b437598..94d6ffcc543 100644
--- a/htdocs/ecm/index.php
+++ b/htdocs/ecm/index.php
@@ -379,7 +379,7 @@ print $langs->trans("ECMAreaDesc2")."<br>";
 print "<br>\n";
 
 // Confirm remove file
-if ($action == 'delete')
+if ($action == 'delete' && empty($conf->use_javascript_ajax))
 {
 	$ret=$form->form_confirm($_SERVER["PHP_SELF"].'?section='.$section.'&urlfile='.urlencode($_GET["urlfile"]), $langs->trans('DeleteFile'), $langs->trans('ConfirmDeleteFile'), 'confirm_deletefile','','',1);
 	if ($ret == 'html') print '<br>';