diff --git a/public_html/classes/render-adminlte.class.php b/public_html/classes/render-adminlte.class.php
index 73254ba30feb9e236ddd518d31e85e1fb688e1e4..b62ed6166a95333baf2e37dbebcd88ba72bba580 100755
--- a/public_html/classes/render-adminlte.class.php
+++ b/public_html/classes/render-adminlte.class.php
@@ -582,6 +582,10 @@ class renderadminlte {
         if($aLink['label']=='-'){
             return '<div class="dropdown-divider"></div>';
         }
+        // special menu entry: hamburger menu item (label is "=")
+        if($aLink['label']=='='){
+            return '<li class="nav-item"><a class="nav-link" data-widget="pushmenu" href="#" role="button"><i class="fas fa-bars"></i></a></li>';
+        }
 
         $aChildren=isset($aLink['children']) && is_array($aLink['children']) && count($aLink['children']) ? $aLink['children'] : false;
 
@@ -665,7 +669,7 @@ class renderadminlte {
      * @return string
      */
     public function getTopNavigation($aNavItems, $aUlOptions=['class'=>'navbar-nav']){
-        array_unshift($aNavItems, ['class'=>'nav-link', 'data-widget'=>'pushmenu', 'href'=>'#', 'role'=>'button', 'label'=>'<i class="fa-solid fa-bars"></i>']);
+        // array_unshift($aNavItems, ['class'=>'nav-link', 'data-widget'=>'pushmenu', 'href'=>'#', 'role'=>'button', 'label'=>'<i class="fa-solid fa-bars"></i>']);
         return $this->addWrapper('ul', $aUlOptions, $this->getNavItems($aNavItems));
     }
 
@@ -1224,6 +1228,11 @@ class renderadminlte {
         return $this->_tag('div', ['class'=>$sClass], $sContent.$sIcon.$sFooter);
     }
 
+    // ----------------------------------------------------------------------
+    // 
+    // PUBLIC FUNCTIONS :: CONTENT - FORM
+    // 
+    // ----------------------------------------------------------------------
 
 
     public function getHorizontalFormElement($sInput, $sLabel=false, $sId=false){
@@ -1345,4 +1354,66 @@ class renderadminlte {
 
     }
 
+    // ----------------------------------------------------------------------
+    // 
+    // PUBLIC FUNCTIONS :: CONTENT - TABBED CONTENT
+    // 
+    // ----------------------------------------------------------------------
+
+    /**
+     * return a box with tabbed content
+     * @param array $aOptions  hash with keys for all options
+     *                           - tabs {array} key=tab label; value=content
+     * @retunr string|array
+     */
+    public function getTabbedContent($aOptions, $asArray=false){
+        static $iTabCounter;
+        if( ! isset($aOptions['tabs']) || ! is_array($aOptions['tabs']) ){
+            return false;
+        }
+        static $iTabCounter;
+        if (!isset($iTabCounter)){
+            $iTabCounter=1;
+        } else {
+            $iTabCounter++;            
+        }
+
+        $id='tab-content-'.$iTabCounter;
+        $iCounter=0;
+
+        $sTabs='';
+        $sContent='';
+        foreach($aOptions['tabs'] as $sLabel => $sTabContent){
+            $iCounter++;
+            $sTabId=$id.'-tabitem-'.$iCounter.'-tab';
+            $sContentId=$id.'-tabitem-'.$iCounter.'-content';
+
+            $sTabs.=$this->_tag('li', ['class'=>'nav-item'], 
+                $this->_tag('a', [
+                    'class'=>'nav-link'.($iCounter==1 ? ' active' : '' ),
+                    'id'=>$sTabId,
+                    'data-toggle'=>'tab',
+                    'href'=>'#'.$sContentId,
+                    'role'=>'tab',
+                    'aria-controls'=>'custom-tabs-one-profile',
+                    'aria-selected'=>($iCounter==1 ? true : false ), 
+                    ], 
+                    $sLabel)
+            );
+            $sContent.=$this->_tag('div', [
+                'class'=>'tab-pane fade'.($iCounter==1 ? ' active show' : ''), 
+                'id'=>$sContentId,
+                'role'=>'tabpanel',
+                'aria-labelledby'=>$sTabId,
+                ], $sTabContent);
+        }
+        $sTabs=$this->_tag('ul', ['class'=>'nav nav-tabs', 'role'=>'tablist'], $sTabs);
+        $sContent=$this->_tag('div', ['class'=>'tab-content'], $sContent);
+
+        return $asArray
+            ? ['tabs'=>$sTabs, 'content'=>$sContent]
+            : $sTabs . $sContent
+            ;
+    }
+
 }
diff --git a/public_html/config/navi_top.php b/public_html/config/navi_top.php
index 55a294eafe14db13b074db271768e02b28ed2a53..6431da16391013e7aca5d373380124dc47a39f5a 100644
--- a/public_html/config/navi_top.php
+++ b/public_html/config/navi_top.php
@@ -1,8 +1,9 @@
 <?php
 
-// icons: https://fontawesome.com/v5/search?o=r&m=free
+// icons: https://fontawesome.com/v6/search?o=r&m=free
 
 return [
+    ['label'=>'='],
     ['href'=>'/index.php', 'label'=>'MyHome' , 'icon'=>'fa-solid fa-home', 'class'=>'bg-gray'],
     ['href'=>'#',          'label'=>'Contact'                                           ],
     ['href'=>'#',          'label'=>'Help',
diff --git a/public_html/config/navi_top.php.dist b/public_html/config/navi_top.php.dist
index 55a294eafe14db13b074db271768e02b28ed2a53..718664275f0c5b88d868f2ab6e1dfc0eac8e5e43 100644
--- a/public_html/config/navi_top.php.dist
+++ b/public_html/config/navi_top.php.dist
@@ -3,6 +3,7 @@
 // icons: https://fontawesome.com/v5/search?o=r&m=free
 
 return [
+    ['label'=>'='],
     ['href'=>'/index.php', 'label'=>'MyHome' , 'icon'=>'fa-solid fa-home', 'class'=>'bg-gray'],
     ['href'=>'#',          'label'=>'Contact'                                           ],
     ['href'=>'#',          'label'=>'Help',