여니씨의 귀차니즘

소스
<script type="text/javascript">
   function MailValueChange(val){
    if(val=="direct"){     
     document.frmMemJoin.txtEmail_02.value=""     
     document.frmMemJoin.txtEmail_02.readOnly=false;
     document.frmMemJoin.txtEmail_02.focus();
    }else{
     document.frmMemJoin.txtEmail_02.value=val;
     document.frmMemJoin.txtEmail_02.readOnly=true;     
    }
   }
</script>

<form name="frmMemJoin">
        <input type="text" name="txtEmail_01" size="12" class="input1" value=""> @
        <input type="text" name="txtEmail_02" size="15" class="input1" value="" style="display:inline;">
        <select name="selEmail" onChange="MailValueChange(this.options[this.selectedIndex].value);">
         <option value="direct">직접 입력</option>
         <option value="naver.com">네이버</option>
         <option value="nate.com">네이트</option>
         <option value="paran.com">파란</option>         
        </select>