카테고리 선택 질문 입니다.. 채택완료

</p>

<p><select id="wr_1" name="wr_1" onChange="wr_1_change(this.value);">

 <option value="동물">동물</option>

 <option value="동물">식물</option>

</select></p>

<p><select id="wr_2" name="wr_2">

 <option value="">없음</option>

</select></p>

<p> </p>

<p><script></p>

<p>function wr_1_change(wr_1) {

 if (window.XMLHttpRequest){ // code for IE7+, Firefox, Chrome, Opera, Safari

  xmlhttp=new XMLHttpRequest();

 }else{ // code for IE6, IE5

  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

 }</p>

<p> xmlhttp.onreadystatechange=function(){

  if (xmlhttp.readyState==4 && xmlhttp.status==200){

   $('#wr_2').html(xmlhttp.responseText);

  }

 }

 xmlhttp.open("GET", "/wr_1_change_ajax.php?wr_1="+encodeURIComponent(wr_1), true);

 xmlhttp.send();

}

</script></p>

<p>

</p>

<p><?php

include_once('./_common.php');</p>

<p>$wr_1 = $_GET['wr_1'];

$wr_2_option = "";</p>

<p>$sql = " select wr_2 from {테이블명 입력} where wr_1 = '".$wr_1."' order by ca_id";

$result = sql_query($sql);

while ($row=sql_fetch_array($result)) {

 $wr_2_option .= "<option value='".$row['wr_2']."'>".$row['wr_2']."</option>";

}</p>

<p>echo $wr_2_option;

?></p>

<p>