function popmake_render_popup_theme_overlay_meta_box() {
	if ( ! has_action( 'popmake_popup_theme_overlay_meta_box_fields' ) ) {
		return;
	}

	global $post;
	wp_nonce_field( basename( __FILE__ ), 'popmake_popup_theme_meta_box_nonce' ); ?>
	<input type="hidden" name="popup_theme_defaults_set" value="true"/>
	<div id="popmake_popup_theme_overlay_fields" class="popmake_meta_table_wrap">
	<table class="form-table">
		<tbody>
		<?php do_action( 'popmake_popup_theme_overlay_meta_box_fields', $post->ID ); ?>
		</tbody>
	</table>
	</div><?php
}