/**
         * Meta Box: Extra Settings
         */
        public function call_box_admin_settings()
        {
            echo $this->form->set_current_option('screen')->open_form();
            ?>
		<fieldset class="options">
			<table class="form-table">
				<tr>
					<th><?php 
            $this->_e('Admin menu position');
            ?>
						<?php 
            echo $this->tooltip_help('Change the menu position of this plugin in "Screen Options".');
            ?>
</th>
					<td><label>
					<?php 
            echo $this->form->select('menu_position', array('admin.php' => 'Main menu', 'index.php' => $this->__('Subitem of Dashboard'), 'edit.php' => $this->__('Subitem of Posts'), 'upload.php' => $this->__('Subitem of Media'), 'link-manager.php' => $this->__('Subitem of Links'), 'edit.php?post_type=page' => $this->__('Subitem of Pages'), 'edit-comments.php' => $this->__('Subitem of Comments'), 'themes.php' => $this->__('Subitem of Appearance'), 'plugins.php' => $this->__('Subitem of Plugins'), 'users.php' => $this->__('Subitem of Users'), 'tools.php' => $this->__('Subitem of Tools'), 'options-general.php' => $this->__('Subitem of Settings')));
            ?>
					</label></td>
				</tr>
			</table>
		</fieldset>
<?php 
            echo $this->form->submit();
            echo $this->form->close_form();
        }
	/**
	 * Screen settings
	 * @param string $content
	 * @return string
	 */
	public function call_screen_settings( $content ) {
		$content .= '<h5>'. $this->__( 'Menu Setting' ) .'</h5>' . "\n";
		$content .= '<div class="extra-prfs">' . "\n";
		$content .= $this->__( 'Admin menu position' ) . ': ' . "\n";
		$content .= $this->form->open_screen_option( 'screen', 'menu_position' );
		$content .= $this->form->select( 'menu_position', array(
			'admin.php' => 'Main menu',
			'index.php' => $this->__( 'Subitem of Dashboard' ),
			'edit.php' => $this->__( 'Subitem of Posts' ),
			'upload.php' => $this->__( 'Subitem of Media' ),
			'link-manager.php' => $this->__( 'Subitem of Links' ),
			'edit.php?post_type=page' => $this->__( 'Subitem of Pages' ),
			'edit-comments.php' => $this->__( 'Subitem of Comments' ),
			'themes.php' => $this->__( 'Subitem of Appearance' ),
			'plugins.php' => $this->__( 'Subitem of Plugins' ),
			'users.php' => $this->__( 'Subitem of Users' ),
			'tools.php' => $this->__( 'Subitem of Tools' ),
			'options-general.php' => $this->__( 'Subitem of Settings' ),
		)) . "\n";
		$content .= '</div>' . "\n";

		return $content;
	}