diff --git a/include/lib/output_html_tab.class.php b/include/lib/output_html_tab.class.php
index 56544f257..d7ed0e59a 100644
--- a/include/lib/output_html_tab.class.php
+++ b/include/lib/output_html_tab.class.php
@@ -40,6 +40,12 @@ class Output_Html_Tab
     private $class_tab; //!< for normal tab
     private $class_tab_selected; //!< for class_tab_selected
     private $mode; //!< mode default tabs
+    private $class_tab_main; //! CSS class for the UL tag
+    private $class_anchor; //! CSS class for the A tag (anchor) default empty
+    private $class_div; //! CSS class for the DIV containing the UL default empty
+    private $class_content_div; //! CSS class for the DIV with content, default empty
+    private $class_comment ; //! CSS class for the comment default "tabs"
+    
     /**
      *@example html_tab.test.php
      */
@@ -47,18 +53,117 @@ class Output_Html_Tab
     {
         $this->a_tabs=[];
         $this->class_tab="tabs";
+        $this->class_tab_main="tabs";
         $this->class_tab_selected="tabs_selected";
         $this->set_mode("tab");
+        $this->class_anchor="";
+        $this->class_div="";
+        $this->class_content_div="";
+        $this->class_comment="tabs";
+    }
+    /**
+     * @brief CSS class for the comment default "tabs"
+     * @return type
+     */
+    public function get_class_comment()
+    {
+        return $this->class_comment;
+    }
+    /**
+     * @brief CSS class for the comment default "tabs"
+     * @return type
+     */
+
+    public function set_class_comment($class_comment)
+    {
+        $this->class_comment=$class_comment;
+        return $this;
+    }
+
+         /**
+      * @brief CSS class for the DIV with content (default empty)
+      */
+    public function get_class_content_div()
+    {
+        return $this->class_content_div;
+    }
+    /**
+     *@brief CSS class for the DIV with content (default empty)
+     * 
+     * @param string $class_content_div
+     */
+    public function set_class_content_div($class_content_div)
+    {
+        $this->class_content_div=$class_content_div;
+        return $this;
+    }
+
+        /**
+     * @brief  CSS class for the DIV containing the UL
+     * @return string
+     */
+    public function get_class_div()
+    {
+        return $this->class_div;
+    }
+    
+    /**
+     * @brief  CSS class for the DIV containing the UL
+     * @return string
+     */
+
+    public function set_class_div($class_div)
+    {
+        $this->class_div=$class_div;
+        return $this;
+    }
+
+        /**
+     * @brief CSS class for the A tag (anchor)
+     * @return type
+     */
+    public function get_class_anchor()
+    {
+        return $this->class_anchor;
+    }
+    /**
+     * @brief CSS class for the A tag (anchor)
+     * @param type $anchor_class
+     */
+    public function set_class_anchor($anchor_class)
+    {
+        $this->class_anchor=$anchor_class;
+        $this;
+    }
+
+        /**
+     * @brief get the CSS class for the UL element
+     * @return type
+     */
+    public function get_class_tab_main()
+    {
+        return $this->class_tab_main;
     }
 
     /**
-     * get the mode , possible value are row or tabs
+     * @brief set the CSS class for the UL element
+     * @return this
+     */
+
+    public function set_class_tab_main($class_tab_main)
+    {
+        $this->class_tab_main=$class_tab_main;
+        return $this;
+    }
+
+    /**
+     * @brief get the mode , possible value are row or tabs , with mode = row , the
+     * class_content_div is set to row
      * @return mixed
      */
     public function get_mode()
     {
         return $this->mode;
-        return $this;
     }
 
     /**
@@ -100,7 +205,6 @@ class Output_Html_Tab
     public function get_class_tab()
     {
         return $this->class_tab;
-        return $this;
     }
 
     /**
@@ -120,7 +224,6 @@ class Output_Html_Tab
     public function get_class_tab_selected()
     {
         return $this->class_tab_selected;
-        return $this;
     }
 
     /**
@@ -169,12 +272,12 @@ class Output_Html_Tab
     }
 
     /**
-     * When printing row , a comment is written if not empty
+     * When printing row , a comment is written if not empty,
      * @param $p_index
      */
     protected function print_comment($p_index) {
         printf ('<span class="%s"> %s </span>',
-            $this->get_class_tab(),
+            $this->get_class_comment(),
             $this->a_tabs[$p_index]->get_comment()
         );
 
@@ -190,7 +293,8 @@ class Output_Html_Tab
         {
             return;
         }
-        printf ( '<ul class="%s">',$this->class_tab);
+        printf('<div class="%s">',$this->class_div);
+        printf ( '<ul class="%s">',$this->class_tab_main);
         for ($i=0; $i<$nb; $i++)
         {
             printf ('<li id="tab%s" class="%s">',
@@ -198,7 +302,8 @@ class Output_Html_Tab
             switch ($this->a_tabs[$i]->get_mode())
             {
                 case 'link':
-                    printf ('<a id="%s" href="%s">',
+                    printf ('<a class="%s" id="%s" href="%s">',
+                            $this->class_anchor,
                             $this->a_tabs[$i]->get_id(),
                             $this->a_tabs[$i]->get_link());
                     printf ('<span class="title_%s"> %s </span>',
@@ -209,7 +314,8 @@ class Output_Html_Tab
 
                     break;
                 case 'ajax':
-                    printf('<a id="%s" onclick="%s">', 
+                    printf('<a class="%s" id="%s" onclick="%s">', 
+                            $this->class_anchor,
                             $this->a_tabs[$i]->get_id(),
                             $this->a_tabs[$i]->get_link());
                     printf ('<span class="title_%s"> %s </span>',
@@ -223,7 +329,7 @@ class Output_Html_Tab
                 case 'static':
                     // show one , hide other
                     $script=$this->build_js($this->a_tabs[$i]->get_id());
-                    printf('<a onclick="%s">', $script);
+                    printf('<a class="%s" onclick="%s">', $this->class_anchor,$script);
                     printf ('<span class="title_%s"> %s </span>',
                         $this->get_class_tab(),
                         $this->a_tabs[$i]->get_title()
@@ -245,6 +351,8 @@ class Output_Html_Tab
             }
         }
         echo '</ul>';
+        echo '</div>';
+        
         if ( $this->get_mode()=="tab" ) {
             for ($i=0;$i<$nb;$i++)
             {