Put more languages in menu

Hi Maxime!

Do you remember that you give me a code to put languages in the menu?

Now the problem is that I want to put more than 3 languages and this code is not working, if I put 4 languages… Do you know what is the problem?

I have installed the plugin “In the page script” and I put the code in “Footer Script”
Then, the code is:

<script type="text/javascript">
jQuery(function ($) {
	$("li.sublanguage a:contains('ES')").html('<img src="https://www.syc-cylinders.eu/wp-content/uploads/2016/09/es.png"/>');
	$("li.sublanguage a:contains('EN')").html('<img src="https://www.syc-cylinders.eu/wp-content/uploads/2016/09/en.png"/>');
        $("li.sublanguage a:contains('FR')").html('<img src="https://www.syc-cylinders.eu/wp-content/uploads/2017/01/fr.png"/>');
        $("li.sublanguage a:contains('PT')").html('<img src="https://www.syc-cylinders.eu/wp-content/uploads/2017/09/pt.png"/>');
});
</script>

Thanks!!!

The page I need help with: [log in to see the link]