Drop-down menu to change language

Here at LiteCart.net you have a nice and slick drop-down menu in the header to change languages (with round flag-symbols).
Where can I get that one?

Simply put this code in ~/includes/templates/default.catalog/views/box_site_menu.inc.php

        <?php if (count(currency::$currencies) > 1) { ?>
        <li class="currencies dropdown">
          <a href="#" data-toggle="dropdown" class="dropdown-toggle"><?php echo currency::$selected['code']; ?> <span class="caret"></span></a>
          <ul class="dropdown-menu list-unstyled">
            <?php foreach (currency::$currencies as $currency) { ?>
            <li><a href="<?php echo document::href_link(null, ['currency' => $currency['code']]); ?>" title="<?php echo currency::$selected['name']; ?>"><?php echo $currency['code']; ?></a></li>
            <?php } ?>
          </ul>
        </li>
        <?php } ?>

        <?php if (count(language::$languages) > 1) { ?>
        <li class="languages dropdown" title="<?php echo language::$selected['name']; ?>">
          <a href="#" data-toggle="dropdown" class="dropdown-toggle"><img src="<?php echo document::href_link(WS_DIR_APP . 'images/languages/' . language::$selected['code'] . '.png'); ?>" alt="<?php echo language::$selected['name']; ?>" /> <span class="hidden-md hidden-lg"><?php echo language::$selected['name']; ?></span> <span class="caret"></span></a>
          <ul class="dropdown-menu">
            <?php foreach (language::$languages as $language) { ?>
            <li><a href="<?php echo document::href_link(null, ['language' => $language['code']]); ?>"><img src="<?php echo document::href_link(WS_DIR_APP . 'images/languages/' . $language['code'] . '.png'); ?>" alt="<?php echo $language['name']; ?>" /> <?php echo $language['name']; ?></a></li>
            <?php } ?>
          </ul>
        </li>
        <?php } ?>

Great! 👍 Thank you. It worked perfectly. 
But your own pics are so much nicer... I hope you don't mind if I download a couple of these?
https://www.litecart.net/storage/images/languages/sv.png

I didn't make them, but here is a link
https://github.com/HatScripts/circle-flags