// Create new meta box slider in child functions.php
global $meta_boxes;

$meta_boxes[] = array(
        'id' => 'postlayout-option-meta-box',
        'title' => __('Post Options','klasik'),
    // 'page' => 'post'changed
        'page' => 'slug-custom-field',
        'showbox' => 'meta_option_show_box',
        'context' => 'normal',
        'priority' => 'high',
        'fields' => array(
                array(
                        'name' => __('Layout','klasik'),
                        'desc' => '<em>'.__('Select the layout you want on this specific post/page. Overrides default site layout.','klasik').'</em>',
                        'options' => $optlayoutimg,
                        'id' => 'klasik_layout',
                        'type' => 'selectimage',
                        'std' => ''
                ),
                array(
                        'name' => __('Feature on Homepage Slider','klasik'),
                        'desc' => '<em>'.__('Checked this checkbox if you want to show this post as Homepage Slider.','klasik').'</em>',
                        'id' => 'klasik_slider_post',
                        'type' => 'checkbox',
                        'std' => ''
                ),
                array(
                        'name' => __('Disable Blog Info on Single','klasik'),
                        'desc' => '<em>'.__('Checked this checkbox if you want to disable the meta and author information on single page (date, author, categories, etc).','klasik').'</em>',
                        'id' => 'klasik_disable_meta',
                        'type' => 'checkbox',
                        'std' => ''
                )
        )
);