function listimgs($aid, $imgwith = 500, $imgheight = 300, $num = 0, $style = '') {
    global $dsql;
    $imgurls = '';
    $row = $dsql -> getone("Select imgurls From`dede_addonimages` where aid='$aid'");
    $imgurls = $row['imgurls'];
    preg_match_all("/{dede:img (.*)}(.*){\/dede:img/isU", $imgurls, $wordcount);
    $count = count($wordcount[2]);
    if ($num > $count || $num == 0) {
        $num = $count;
    }
    for($i = 0; $i < $num; $i++) {
        if($style == 'li') {
            $imglist .= "
";
        } else {
            $imglist .= "";
        }
    }
    return $imglist;
}