jQuery(function($)
{
    var $inputs = $('.tx-pilmailform-pi1 .captcha-images input[type=text]').hide();

    $('.tx-pilmailform-pi1 .captcha-images td.thumbnail')
        .addClass('tx-pilmailform-pi1-captcha-deselected')
        .each(function(index, cell)
        {
            var $input = $inputs.eq(index);
            $(cell)
                .bind('click', function()
                {
                    $(this)
                        .removeClass('tx-pilmailform-pi1-captcha-deselected')
                        .addClass('tx-pilmailform-pi1-captcha-selected')
                        .siblings()
                            .removeClass('tx-pilmailform-pi1-captcha-selected')
                            .addClass('tx-pilmailform-pi1-captcha-deselected')
                    
                    $inputs.not($input).val('');
                    $input.val('x');
                })
                .append($input);
        });

    $('.tx-pilmailform-pi1 .captcha-images tr.inputs').remove();
});