ajax 변환 질문드립니다.

<table id="supply_frm">
<tr><td>
    <select value="<?php echo $wr11[$i]; ?>" name="wr_11[]">
        <option value="" <?php echo get_selected('제품 선택', $wr11[$i]); ?>>제품 선택</option>
        <option value="사과"    codes="APPLE"        <?php echo get_selected('사과',        $wr11[$i]); ?>>사과</option>
        <option value="딸기"    codes="STRAWBERRY"    <?php echo get_selected('딸기',        $wr11[$i]); ?>>딸기</option>
        <option value="바나나"    codes="BANANA"        <?php echo get_selected('바나나',        $wr11[$i]); ?>>바나나</option>

    </select>
</td></tr>

</table>


<div id="add_supply">추가</div>

$("#add_supply").click(function() {
    var $el = $("#supply_frm tr:last");
    var fld = "<tr><td>\n";
    fld += "<select name=\"wr_11[]\" >\n";
    fld += "<option value=\"\">제품 선택</option>\n";
    fld += "<option value=\"사과\"            codes=\"APPLE\"        >사과</option>\n";
    fld += "<option value=\"딸기\"            codes=\"STRAWBERRY\"    >딸기</option>\n";
    fld += "<option value=\"바나나\"            codes=\"BANANA\"    >바나나</option>\n";
    fld += "</select>";
    fld += "</td></tr>";
    $el.append(fld);
};

<tr><td>
    <select value="<?php echo $wr11[$i]; ?>" name="wr_11[]">
        <option value="" <?php echo get_selected('제품 선택', $wr11[$i]); ?>>제품 선택</option>
         <?       $sql = "SELECT it_product_main, it_db_main FROM g5_write_stock_all GROUP BY it_product_main";
              $result = sql_query($sql);
     
              for($j=0; $row=sql_fetch_array($result); $j++) {
         ?>  
         <option value="<?php echo $row['it_product_main']; ?>" codes="<?php echo $row['it_db_main']; ?>" <?php echo $row['it_product_main'] == $wr11[$i] ? " selected='selected' ": ""; ?>><?php echo $row['it_product_main']; ?></option>
         <?  } ?>
    </select>
</td></tr>