Eunoia Extra Meta Field

$portfoliourl_1_metabox = array(
    'id' => 'portfoliourl',
    'title' => 'Portfolio URL',
    'page' => array('portfolio'),
    'context' => 'side',
    'priority' => 'low',
    'fields' => array(


                array(
                    'name'          => 'Portfolio Meta URL',
                    'desc'          => 'Enter a URL you want to use somewhere in the portfolio for a link',
                    'id'                => 'nick_portfolio_url',
                    'class'             => 'nick_portfolio_url',
                    'type'          => 'text',
                    'rich_editor'   => 0,
                    'max'           => 0                ),
                )
);

add_action('admin_menu', 'nick_add_portfoliourl_1_meta_box');
function nick_add_portfoliourl_1_meta_box() {

    global $portfoliourl_1_metabox;

    foreach($portfoliourl_1_metabox['page'] as $page) {
        add_meta_box($portfoliourl_1_metabox['id'], $portfoliourl_1_metabox['title'], 'nick_show_portfoliourl_1_box', $page, 'side', 'low', $portfoliourl_1_metabox);
    }
}

// function to show meta boxes
function nick_show_portfoliourl_1_box() {
    global $post;
    global $portfoliourl_1_metabox;
    global $nick_prefix;
    global $wp_version;

    // Use nonce for verification
    echo '<input type="hidden" name="nick_portfoliourl_1_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';

    echo '<table class="form-table">';

    foreach ($portfoliourl_1_metabox['fields'] as $field) {
        // get current post meta data

        $meta = get_post_meta($post->ID, $field['id'], true);

        echo '<tr>',
                '<th style="width:20%"><label for="', $field['id'], '">', stripslashes($field['name']), '</label></th>',
                '<td class="nick_field_type_' . str_replace(' ', '_', $field['type']) . '">';
        switch ($field['type']) {
            case 'text':
                echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" /><br/>', '', stripslashes($field['desc']);
                break;





        }
        echo     '<td>',
            '</tr>';
    }

    echo '</table>';
}

// Save data from meta box
add_action('save_post', 'nick_portfoliourl_1_save');
function nick_portfoliourl_1_save($post_id) {
    global $post;
    global $portfoliourl_1_metabox;

    // verify nonce
    if ( ! isset( $_POST['nick_portfoliourl_1_meta_box_nonce'] ) || ! wp_verify_nonce($_POST['nick_portfoliourl_1_meta_box_nonce'], basename(__FILE__))) {
        return $post_id;
    }

    // check autosave
    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
        return $post_id;
    }

    // check permissions
    if ('page' == $_POST['post_type']) {
        if (!current_user_can('edit_page', $post_id)) {
            return $post_id;
        }
    } elseif (!current_user_can('edit_post', $post_id)) {
        return $post_id;
    }

    foreach ($portfoliourl_1_metabox['fields'] as $field) {

        $old = get_post_meta($post_id, $field['id'], true);
        $new = $_POST[$field['id']];

        if ($new && $new != $old) {
            if($field['type'] == 'date') {
                $new = nick_format_date($new);
                update_post_meta($post_id, $field['id'], $new);
            } else {
                if(is_string($new)) {
                    $new = $new;
                }
                update_post_meta($post_id, $field['id'], $new);


            }
        } elseif ('' == $new && $old) {
            delete_post_meta($post_id, $field['id'], $old);
        }
    }
}


function nick_export_ui_scripts() {

    global $nick_options, $post;
    ?>
    <script type="text/javascript">
            jQuery(document).ready(function($)
            {

                if($('.form-table .nick_upload_field').length > 0 ) {
                    // Media Uploader
                    window.formfield = '';

                    $('.nick_upload_image_button').live('click', function() {
                    window.formfield = $('.nick_upload_field',$(this).parent());
                        tb_show('', 'media-upload.php?type=file&post_id=<?php echo $post->ID; ?>&TB_iframe=true');
                                        return false;
                        });

                        window.original_send_to_editor = window.send_to_editor;
                        window.send_to_editor = function(html) {
                            if (window.formfield) {
                                imgurl = $('a','<div>'+html+'</div>').attr('href');
                                window.formfield.val(imgurl);
                                tb_remove();
                            }
                            else {
                                window.original_send_to_editor(html);
                            }
                            window.formfield = '';
                            window.imagefield = false;
                        }
                }

            });
      </script>
    <?php
}

function nick_export_datepicker_ui_scripts() {
    global $nick_base_dir;
    wp_enqueue_script('jquery-ui-datepicker');
    wp_enqueue_script('jquery-ui-slider');
}
function nick_export_datepicker_ui_styles() {
    global $nick_base_dir;
    wp_enqueue_style('jquery-ui-css', 'http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css', false, '1.8', 'all');
}

// these are for newest versions of WP
add_action('admin_print_scripts-post.php', 'nick_export_datepicker_ui_scripts');
add_action('admin_print_scripts-edit.php', 'nick_export_datepicker_ui_scripts');
add_action('admin_print_scripts-post-new.php', 'nick_export_datepicker_ui_scripts');
add_action('admin_print_styles-post.php', 'nick_export_datepicker_ui_styles');
add_action('admin_print_styles-edit.php', 'nick_export_datepicker_ui_styles');
add_action('admin_print_styles-post-new.php', 'nick_export_datepicker_ui_styles');

if ((isset($_GET['post']) && (isset($_GET['action']) && $_GET['action'] == 'edit') ) || (strstr($_SERVER['REQUEST_URI'], 'wp-admin/post-new.php')))
{
    add_action('admin_head', 'nick_export_ui_scripts');
}

// converts a time stamp to date string for meta fields
if(!function_exists('nick_timestamp_to_date')) {
    function nick_timestamp_to_date($date) {

        return date('m/d/Y', $date);
    }
}
if(!function_exists('nick_format_date')) {
    function nick_format_date($date) {

        $date = strtotime($date);

        return $date;
    }
}