$(document).ready(function(){

    $('.check-language').click(function() {
        $('#check-language').attr('checked', '');

    });
    $('#check-language').click(function() {
        $('.check-language').attr('checked', '');

    });
    $('.check-document').click(function() {
        $('#check-document').attr('checked', '');

    });
    $('#check-document').click(function() {
        $('.check-document').attr('checked', '');

    });
    $('.check-theme').click(function() {
        $('#check-theme').attr('checked', '');

    });
    $('#check-theme').click(function() {
        $('.check-theme').attr('checked', '');

    });

    //new codes here
});