WooCommerce 2.0 Custom Product Tab (uses WP Code Editor)

<?php

/**
 * Custom Tabs for Custom Specifications Display. Compatible with WooCommerce 2.0+ only!
 * This version uses the code editor.
 *
 * Outputs an extra tab to the default set of info tabs on the single product page.
 * This file needs to be called via your functions.php file.
 */
function custom_tab_options_tab_spec() {
?>
    <li class="custom_tab3"><a href="#custom_tab_data3"><?php _e('Custom Tab 3', 'woothemes'); ?></a></li>
<?php
}
add_action('woocommerce_product_write_panel_tabs', 'custom_tab_options_tab_spec');


/**
 * Custom Tab Options
 *
 * Provides the input fields and add/remove buttons for custom tabs on the single product page.
 */
function custom_tab_options_spec() {
    global $post;

    $custom_tab_options_spec = array(
        'titlec' => get_post_meta($post->ID, 'custom_tab_title_spec', true),
        'contentc' => get_post_meta($post->ID, 'custom_tab_content_spec', true),
    );

?>
    <div id="custom_tab_data3" class="panel woocommerce_options_panel">
        <div class="options_group">
            <p class="form-field">
                <?php woocommerce_wp_checkbox( array( 'id' => 'custom_tab_enabled_spec', 'label' => __('Enable Custom Tab?', 'woothemes'), 'description' => __('Enable this option to enable the custom tab on the frontend.', 'woothemes') ) ); ?>
            </p>
        </div>

        <div class="options_group custom_tab_options">
            <p class="form-field">
                <label><?php _e('Custom Tab Title:', 'woothemes'); ?></label>
                <input type="text" size="5" name="custom_tab_title_spec" value="<?php echo @$custom_tab_options_spec['titlec']; ?>" placeholder="<?php _e('Enter your custom tab title', 'woothemes'); ?>" />
            </p>

            <p class="form-field">
                <?php _e('Custom Tab Content:', 'woothemes'); ?>
            </p>

            <table class="form-table">
                <tr>
                    <td>
<?php
        $settings = array(
                        'text_area_name'=> 'custom_tab_content_spec',
                        'quicktags'     => true,
                        'tinymce'       => true,
                        'media_butons'  => false,
                        'textarea_rows' => 98,
                        'editor_class'  => 'contra',
                        'editor_css'    => '<style>#wp-custom_tab_content_spec-editor-container .wp-editor-area{height:250px; width:100%;} #custom_tab_data3 .quicktags-toolbar input {width:auto;}</style>'
                        );

        $id = 'custom_tab_content_spec';

 wp_editor($custom_tab_options_spec['contentc'],$id,$settings);

 ?>
                    </td>
                </tr>
            </table>
        </div>
    </div>
<?php
}
add_action('woocommerce_product_write_panels', 'custom_tab_options_spec');


/**
 * Process meta
 *
 * Processes the custom tab options when a post is saved
 */
function process_product_meta_custom_tab_spec( $post_id ) {
    update_post_meta( $post_id, 'custom_tab_enabled_spec', ( isset($_POST['custom_tab_enabled_spec']) && $_POST['custom_tab_enabled_spec'] ) ? 'yes' : 'no' );
    update_post_meta( $post_id, 'custom_tab_title_spec', $_POST['custom_tab_title_spec']);
    update_post_meta( $post_id, 'custom_tab_content_spec', $_POST['custom_tab_content_spec']);
}
add_action('woocommerce_process_product_meta', 'process_product_meta_custom_tab_spec', 10, 2);


/**
 * Display Tab
 *
 * Display Custom Tab on Frontend of Website for WooCommerce 2.0
 */

add_filter( 'woocommerce_product_tabs', 'woocommerce_product_custom_tab_spec' );


    function woocommerce_product_custom_tab_spec( $tabs ) {
        global $post, $product;

        $custom_tab_options_spec = array(
            'enabled' => get_post_meta($post->ID, 'custom_tab_enabled_spec', true),
            'titlec' => get_post_meta($post->ID, 'custom_tab_title_spec', true),
            'contentc' => get_post_meta($post->ID, 'custom_tab_content_spec', true),
        );

            if ( $custom_tab_options_spec['enabled'] != 'no' ){
                $tabs['custom-tab-second'] = array(
                    'title'    => $custom_tab_options_spec['titlec'],
                    'priority' => 30,
                    'callback' => 'custom_product_tabs_panel_content_spec',
                    'content'  => $custom_tab_options_spec['contentc']
                );
            }
        return $tabs;
    }

    /**
     * Render the custom product tab panel content for the callback 'custom_product_tabs_panel_content_spec'
     */

   function custom_product_tabs_panel_content_spec( $key, $custom_tab_options_spec ) {

        global $post, $product;

        $custom_tab_options_spec = array(
            'enabled' => get_post_meta($post->ID, 'custom_tab_enabled_spec', true),
            'titlec' => get_post_meta($post->ID, 'custom_tab_title_spec', true),
            'contentc' => get_post_meta($post->ID, 'custom_tab_content_spec', true),
        );

        echo '<h2>' . $custom_tab_options_spec['titlec'] . '</h2>';
        echo $custom_tab_options_spec['contentc'];

    }


?>