function module_table()
 {
     $this->installed = $this->connection->db_assoc("SELECT * FROM `RheinaufCMS>Module` WHERE `SYSTEM` = 0 ORDER BY `id` ASC");
     $this->available_modules = RheinaufFile::dir_array(INSTALL_PATH . '/Module', false, 'php');
     foreach ($this->available_modules as $module) {
         $class_name = preg_replace('/\\.php/', '', $module);
         if ($module != 'Navi.php') {
             if (RheinaufFile::is_file(INSTALL_PATH . '/Module/' . $class_name . '/Install.php')) {
                 include_once INSTALL_PATH . '/Module/' . $class_name . '/Install.php';
                 $class_name .= 'Install';
             } else {
                 include_once $module;
             }
         }
         if (is_callable(array($class_name, 'about'))) {
             eval('$module_about = ' . $class_name . '::about();');
             switch ($module_about['type']) {
                 case 'inPage':
                     $this->inPageModules[] = $module_about;
                     break;
                 case 'installable':
                     $this->installableModules[] = $module_about;
                     break;
             }
         }
     }
     $return_string = '';
     $this->return .= Html::h(3, 'Installierbare Module');
     $table = new Table(2);
     $table->add_th(array('Installierbare Module', 'Installierte Module'));
     $form = new Form();
     $form->form_tag(SELF_URL);
     $installed_modules = array();
     foreach ($this->installed as $installed) {
         $installed_modules[] = $installed['Name'];
     }
     $installables_select = new Select('installable', array('size' => '10', 'style' => 'width:150px'));
     foreach ($this->installableModules as $modul) {
         if (!in_array($modul['Name'], $installed_modules)) {
             $installables_select->add_option(rawurlencode($modul['Name']), $modul['Name']);
         }
     }
     $installed_select = new Select('installed', array('size' => '10', 'style' => 'width:150px'));
     foreach ($installed_modules as $modul) {
         $installed_select->add_option(rawurlencode($modul), $modul);
     }
     $table->add_td(array($installables_select->flush_select(), $installed_select->flush_select()));
     $install_submit = Form::add_input('submit', 'install', 'Installieren');
     $uninstall_submit = Form::add_input('submit', 'uninstall', 'Deinstallieren');
     $table->add_td(array($install_submit, $uninstall_submit), array('style' => 'text-align:center'));
     $form->add_custom($table->flush_table());
     $this->return .= $form->flush_form();
     $this->return .= Html::h(3, 'Aufruf über Template');
     $table = new Table(2, array('style' => 'width:500px'));
     $table->add_th(array('Modul', 'Einbindung'));
     foreach ($this->inPageModules as $module) {
         $table->add_td(array(Html::bold($module['Name']), $module['Usage']));
     }
     $this->return .= $table->flush_table();
 }