이메일 호스트명 자동

<script language="javascript">
<!--
function input_email(domain){
    email = document.getElementsByName('email[]')
    if(domain){
        email[1].value = domain;
    }else{
        email[1].value = "";
        email[1].focus();
    }
}
//-->
</script>

<input name="email[]" value="" type="text" style="WIDTH: 120px">
@
<input name="email[]" value="" type="text" style="WIDTH: 120px">
<select name="domain" class="best-tt" style='width:100px;' onChange="input_email(this.value);">
    <option value="" selected>직접입력</option>
    <option value="hanmail.net">한메일</option>
    <option value="naver.com">네이버</option>
    <option value="nate.com">네이트</option>
    <option value="Korea.com">Korea</option>
    <option value="hanafos.com">하나포스</option>
    <option value="dreamwiz.com">드림위즈</option>
    <option value="msn.com">MSN</option>
    <option value="netian.com">네띠앙</option>
    <option value="yahoo.co.kr">야후</option>
    <option value="empas.com">엠파스</option>
    <option value="chol.com">천리안</option>
    <option value="hotmail.com">핫메일</option>
</select>