function get_abbreviated_title($post_id, $num_char = 20, $ellips = '…') {
$title = get_the_title($post_id);
if ( mb_strlen($title, 'UTF-8') > $num_char ) {
$title = mb_substr($title, 0, $num_char, 'UTF-8') . $ellips;
}
return $title;
}