Insert logo and the flags in menu bar

You would need to go into the CSS of the plugin to do that, and would also have to add another set of <div> tags around the plugin to display it inside the menu.

The same with the logo but only in the themes CSS, although the logo looks much too big to go into the menu.

and in which part exactly of the plugin I have to add the new <div>

qtranslate/qtranslate.php
qtranslate/qtranslate_hooks.php
qtranslate/qtranslate_configuration.php
qtranslate/license.txt
qtranslate/readme.txt
qtranslate/qtranslate_wphacks.php
qtranslate/qtranslate_utils.php
qtranslate/qtranslate_javascript.php
qtranslate/qtranslate_core.php
qtranslate/qtranslate_services.php
qtranslate/qtranslate_widget.php

I don′t find any css files