[Jquery] - Multiple Select Box 박스간 데이터 전송법

<select id="org_select">
  <option>전송될데이터</option>
</select>

<select id="org_select">
  
</select> 

<input type="button" onclick="addSelect();" value="전송" />
<input type="button" onclick="removeSelect();" value="삭제" /> 

function addSlect()

{

return !$('#org_select option:selected').remove().appendTo('#new_select');

}

function removeSelect()

{

return !$('#new_select option:selected').remove().appendTo('#org_select');

}