function pages($field, $value, $fieldinfo) {
        extract($fieldinfo);
        if($value) {
        $v = explode('|', $value);
        $data = "<div class=\"mb-3 row\"><div  class=\"col-md-3 offset-l-2\" ><select name=\"info[pagination_type]\" id=\"info_pagination_type\" class=\"form-select\">";
                $type = array('不分页', '自动分页', '手动分页');
                if($v[0]==1) $con = 'style="display:"';
                else $con = 'style="display:none"';
                foreach($type as $i => $val) {
                if($i==$v[0]) $tag = 'selected';
                else $tag = '';
                $data .= "<option value=\"$i\" $tag>$val</option>";
                }
                $data .= "</select></div><div id=\"pagination_type1\" class=\"col-md-3\" $con><input name=\"info[maxchar_perpage]\" type=\"text\" id=\"info_maxchar_perpage\" value=\"$v[1]\" class=\"form-control\"></div><div class=\"col-md-4 text-muted  input-word-aux \" id=\"pagination_type1_tip\">字符数（包含HTML标记）</div></div>";
            return $data;
        } else {
        return "<div class=\"mb-3 row\"><div  class=\"col-md-3 offset-l-2\" ><select name=\"info[pagination_type]\" id=\"info_pagination_type\" class=\"form-select\">
                <option value=\"0\">不分页</option>
                <option value=\"1\">自动分页</option>
                <option value=\"2\">手动分页</option>
            </select></div>
        <div id=\"pagination_type1\"  class=\"col-md-3\" style=\"display:none\" ><input name=\"info[maxchar_perpage]\" type=\"text\" id=\"info_maxchar_perpage\" value=\"10000\" class=\"form-control\"></div><div class=\"col-md-4 text-muted  input-word-aux \" id=\"pagination_type1_tip\" style=\"display:none\">字符数（包含HTML标记）</div></div>";
        }


    }