이중 <select>문 value값 가져오기 --- 고수님들 도와주세요 채택완료

<script>

var county = [];

county.push(["11110", "서울 종로구"]);

county.push(["11140", "서울 종로구"]);

county.push(["26110", "부산 중구"]);

county.push(["26140", "부산 서구"]);

county.push(["27110", "대구 중구"]);

county.push(["27140", "대구 동구"]);</p>

<p>function change(city){

    $("select#county option").remove();

    $("select#county").append("<option value=\"\">전체</option>");

    if(city == "00000"){

        return;

    }

    for(i = 0; i < county.length; i++){

        if((county[i][0] - city) < 1000 && (county[i][0] - city) > 0){

            $("select#county").append("<option value=\""+county[i][0]+"\">"+county[i][1]+"</option>");

        }

    }

}

</script>

<select id="city" name="city" onchange="change(this.value);">

    <option value='00000'>전체</option>

    <option value='11000'>서울</option>

    <option value='26000'>부산</option>

    <option value='27000'>대구</option>

</select>

<select id="county" name="county">

    <option value="">전체</option>

</select></p>

<p>