/**
  * Include wanted page
  */
 public function display_plugin_admin_page()
 {
     //set view
     self::$view = self::getGetVar("view");
     if (empty(self::$view)) {
         self::$view = self::VIEW_OVERVIEW;
     }
     $add_folder = '';
     //require styles by view
     switch (self::$view) {
         case self::VIEW_OVERVIEW:
         case self::VIEW_GRID_CREATE:
         case self::VIEW_GRID:
             break;
         case self::VIEW_ITEM_SKIN_EDITOR:
             $add_folder = 'elements/';
             break;
         default:
             //go back to default
             self::$view = self::VIEW_OVERVIEW;
     }
     try {
         require_once 'views/header.php';
         require_once 'views/' . $add_folder . self::$view . '.php';
         require_once 'views/footer.php';
     } catch (Exception $e) {
         echo "<br><br>View ({$view}) Error: <b>" . $e->getMessage() . "</b>";
     }
 }