jQuery Mobile 1.4 - horizontal checkboxes

HTML

<div class="ui-field-contain">
    <fieldset data-role="controlgroup" data-type="horizontal">
        <legend>Contact bord sensible</legend>
        <input type="checkbox" name="checkbox-6" id="checkbox-6" class="custom" checked="true">
        <label for="checkbox-6">V</label>
                    
        <input type="checkbox" name="checkbox-7" id="checkbox-7" class="custom">
        <label for="checkbox-7">N</label>
                        
        <input type="checkbox" name="checkbox-8" id="checkbox-8" class="custom">
        <label for="checkbox-8">A</label>
                            
        <input type="checkbox" name="checkbox-9" id="checkbox-9" class="custom" >
        <label for="checkbox-9">L</label>
    </fieldset>
</div>

JavaScript

$(document).ready(function(){


});