1:1 문의하기 select 값 넣기 방법이.ㅠ

<select   name="qa_1" onChange="javascript:selectEvent(this)" id="qa_1" required class="required" ><option value="">카테고리 선택1</option>                    <?php echo $cate_option ?>                </select>​                <select name="qa_2"  id="qa_2" required class="required" >                    <option value="">카테고리 선택2</option>                    <?php echo $it_option ?>                </select>​

//카테고리 1    } $catesql = " select ca_id, ca_name from {$g5['g5_shop_category_table']} where length(ca_id) = '2' and ca_use = '1' order by ca_order, ca_id ";    $cateresult = sql_query($catesql); $cate_option='';         for ($i=0; $row=sql_fetch_array($cateresult); $i++){    $sql2 = " select ca_id, ca_name from {$g5['g5_shop_category_table']} where LENGTH(ca_id) = '4' and SUBSTRING(ca_id,1,2) = '{$row['ca_id']}' and ca_use = '1' order by ca_order, ca_id ";     $result2 = sql_query($sql2);             $count = mysql_num_rows($result2);     for ($j=0; $row2=sql_fetch_array($result2); $j++){     $cate_option .= option_selected($row2['ca_id'], $write['qa_1'], $row2['ca_name']);             }   }   //  카테고리2$row23 = sql_query(" select it_id, it_name from {$g5['g5_shop_item_table']} where ca_id2 = '여기에 값이 들어가야되는데' and it_use = '1'  ");   for ($i=0;$rowa=sql_fetch_array($row23); $i++){             $it_option .= option_selected($rowa['it_name'], $write['qa_2'], $rowa['it_name']);             }​