ajax 한글꺠짐

<?
include    "../include/db_connect.html";    $DB = new DB_Connect();
include    "../include/Config.html";

?>
<meta charset="euc-kr">
<script type="text/javascript" src="http://wdreamdc.com/js/jquery-1.8.3.min.js"></script>
<div class="adressWrap">
        <select name="wr_4" class="y1" id="selectID">
        <option value="" required>-선택-</option>
<!-- 사용할데이터 불러오기 -->
        <?
        $addr_sql       = "select * from table where cate2_code='00' and cate3_code='00'  order by snum asc";
        $addr_result    = $DB->dbResult($addr_sql);
        while($addr_row = mysql_fetch_array($addr_result[result])){?>
            <option value="<?=$addr_row[cate1_code]?>"><?=$addr_row[cate_name]?></option>
        <?}?>
        </select>
        <select name="wr_6" class="y2" id="selectID2" required>
        </select>
</div>

<script>
$(document).ready(function(){
        $('#selectID').on('change', function(){ 
                        var path  = window.location.href;
                        // alert(path+"theme/basic/ajaxPHP.php");
                        $.post("./ta.php",{optVal:this.value}, 
                            function(data) {
                                $('#selectID2').empty();
                                $('#selectID2').append('<option value="">-선택-</option>');
                                $('#selectID2').append(data);
                        });
        });
});
</script>

<meta charset="euc-kr">
<?
include    "../include/db_connect.html";    $DB = new DB_Connect();
include    "../include/Config.html";

$ajax = $_POST['optVal'];
$option="";


$sql="select * from table where cate1_code='".$ajax."' and cate2_code<>'00' and cate3_code='00'";

echo $sql;

// echo $sql;
        $result    = $DB->dbResult($sql);


while ($row = mysql_fetch_array($result[result]))
{
    // echo $row['co_gu'];
    $option=$option.'<option value="'.$row['cate1_code'].'">'.$row['cate_name'].'</option>';
}
echo $option;
?>