function widget($args, $instance) {
    $out = $tmp = '';

    extract($args, EXTR_SKIP);

    $ll = '';
	
    global $post;
    if(is_single() && $post) {
	    $lat = get_post_meta($post->ID, 'geo_latitude', true);
	    $lng = get_post_meta($post->ID, 'geo_longitude', true);
	    $zoom = get_post_meta($post->ID, 'geo_zoom', true);
	    $address = get_post_meta($post->ID, 'geo_address', true);
	    if($lat != '') {
	    	$ll = $lat . ',' . $lng;
	    	$instance['address'] = $address;
	    	$instance['lightbox_zoom'] = $zoom;
	    }
    }
    
    if($ll == '') {
    	return $out;
    }
    
    // self::$widgets[] = array(....