Repeatable fields with drop-down lists of taxonomies' terms

//////////////////////////////////
//  SETUP THE REPEATABLE FIELDS //
// TO BE PUT IN A FUNCTION FILE //
//////////////////////////////////

<?php
//DROP DOWN LISTS USING TERMS FROM CUSTOM TAXONOMIES
function print_screening_field($cnt, $p = null) {
if ($p === null) {
    $a = $b = $c = '';
} else {
    $a = $p['screeningName']; // Change variable name
    $b = $p['screeningMonth']; // Change variable name
    $c = $p['screeningYear']; // Change variable name
}
    $festivalTerms = get_terms('festival', 'hide_empty=0'); // Change variable name and taxonomy name
    $festivalNames = wp_get_object_terms($post->ID, 'festival'); // Change variable name and taxonomy name
    $monthTerms = get_terms('month', 'hide_empty=0'); // Change variable name and taxonomy name
    $monthNames = wp_get_object_terms($post->ID, 'month'); // Change variable name and taxonomy name
    $yearTerms = get_terms('year', 'hide_empty=0'); // Change variable name and taxonomy name
    $yearNames = wp_get_object_terms($post->ID, 'year'); // Change variable name and taxonomy name

    $html .= '<tr id="'. $cnt .'" class="repeatableField form-field">'; // The class name here is important regarding the jquery's part of the code
        $html .= '<td><label>#'.$cnt.'</label></td>'; // Here the $cnt variable is used just to visually see how many fields we have created

        $html .= '<td>';
            $html .= '<select name="screeningDetails[' . $cnt . '][screeningName]" id="' . $cnt . '">'; // to name the select makes it work, adding also the $cnt variable to it
                $html .= '<option value="';
                    if (!count( $festivalNames )) {
                        $html .= 'selected">';
                    }
                $html .= 'Select a festival</option>';
                foreach ($festivalTerms as $festivalTerm) {
                $html .= '<option value="' . $festivalTerm->name . '" '.($a==$festivalTerm->name?'selected':'').'>' . $festivalTerm->name . '</option>';
                }
            $html .= '</select>';
        $html .= '</td>';

        $html .= '<td>';
            $html .= '<select name="screeningDetails[' . $cnt . '][screeningMonth]" id="' . $cnt . '">'; // to name the select makes it work, adding also the $cnt variable to it
                $html .= '<option value="';
                    if (!count( $monthNames )) {
                        $html .= 'selected">';
                    }
                $html .= 'Select a month</option>';
                foreach ($monthTerms as $monthTerm) {
                $html .= '<option value="' . $monthTerm->name . '" '.($b==$monthTerm->name?'selected':'').' id="' . $cnt . '">' . $monthTerm->name . '</option>';
                }
            $html .= '</select>';
        $html .= '</td>';

        $html .= '<td>';
            $html .= '<select name="screeningDetails[' . $cnt . '][screeningYear]" id="' . $cnt . '">'; // to name the select makes it work, adding also the $cnt variable to it
                $html .= '<option value="';
                    if (!count( $yearNames )) {
                        $html .= 'selected">';
                    }
                $html .= 'Select a year</option>';
                foreach ($yearTerms as $yearTerm) {
                    $html .= '<option value="' . $yearTerm->name . '" '.($c==$yearTerm->name?'selected':'').'>' . $yearTerm->name . '</option>';
                }
            $html .= '</select>';
        $html .= '</td>';

        $html .= '<td>';
            $html .= '<button class="remove">Remove #' . $cnt . '</button>';
        $html .= '</td>';

    $html .= '</tr>';

return $html;
}

//HOW TO DISPLAY THE DROP DOWN LISTS ON THE ADMIN SIDE
function screening_details_meta_box(){
    global $post;
    $custom = get_post_custom($post->ID);
    $screeningDetailsData = get_post_meta($post->ID,"screeningDetails",true);
?>
    <h4 style=" text-transform: uppercase;">Other screenings</h4>
    <table id="data_items" class="form-table" border-collapse="collapse">
        <caption style="display: none;">List of screenings other than the premiere screenings</caption>

        <thead>
            <tr class="form-field">
                <th>Number</th>
                <th>Name</th>
                <th>Month</th>
                <th>Year</th>
                <th></th>
            </tr>
        </thead>

        <tbody>
        <?php
        $c = 0;
            if (count($screeningDetailsData) > 0){
                foreach((array)$screeningDetailsData as $p ){
                    if ( isset($p['screeningName']) || isset($p['screeningMonth']) || isset($p['screeningYear']) ){
                        echo print_screening_field($c,$p); // uses the fonction name
                        $c = $c +1;
                    }
                }
            }
        ?>
        </tbody>
    </table>
    <span id="here"></span>
    <button class="add"><?php echo __('Add a screening'); ?></button>
    <script>
        var $ =jQuery.noConflict();
        $(document).ready(function() {
        var count = <?php echo $c; ?>;
        $(".add").click(function() {
            count = count + 1;
                $('#data_items').append('<? echo implode('',explode("\n",print_screening_field('count'))); ?>'.replace(/count/g, count));
                    return false;
                });
                $(".remove").live('click', function() {
                    //$(this).parent().remove(); // When the button is outside the repeatable element
                    $(this).parents('[class*="repeatableField"]').remove(); // When the button is inside the repeatable element
                });
            });
    </script>
    <style>
        table#data_items { margin-bottom: 20px; }
        tr[class*="repeatableField"]:nth-child(odd) { background-color: #EEEEEE; }
    </style>
    <?php
}

//SAVE THE DATA FROM THE REPEATABLE FIELDS
function save_meta_box($post_id){
    global $post;

    if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
    return $post_id;
    if (isset($_POST['screeningDetails'])){ $screeningDetailsData = $_POST['screeningDetails']; update_post_meta($post_id,'screeningDetails',$screeningDetailsData); } else { delete_post_meta($post_id,'screeningDetails'); }
}
add_action('save_post', 'save_meta_box');
?>