It was tough one, but here you have the reason:
English version – working:
<script type='text/javascript' src='https://support.priceminister.com/wp-includes/js/jquery/jquery.js?ver=1.10.2'></script>
French version – not working:
<script type='text/javascript' src='https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js?ver=02082013_1230'></script>