자바스크립트 select 값 받기

<script>
function epoint() { 
var epoint = document.frm.epoint.options[document.frm.epoint.selectedIndex].value;
alert(epoint);
}
<form name="frm" method="post">
<select name="epoint" id="epoint">
         <option value="1">1</option>
         <option value="2">2</option>
         <option value="3">3</option>
         <option value="4">4</option>
         <option value="5">5</option>
</select>
</form>
<a href="javascript:epoint()">선택완료</a>