Add css class to selected radio labels

$(document).ready(function(){
    updateRadioLabels()
    $('input[type=radio]').change(updateRadioLabels)
})
 
function updateRadioLabels(){
 
    $('input[type=radio]').each(function(){
        $('input[name=' + this.name +'] + label').removeClass('selected');
        $('input[name=' + this.name +']:checked + label').addClass('selected');    
    })
 
}