HTML:
HTML：
<select id="additional" name="additional" multiple="">
<option value="Shipping Expences">Shipping Expences</option>
<option value="Packaging Expences">Packaging Expences</option>
<option value="Comission Expences">Comission Expences</option>
<option value="something">something</option>
<option value="hnjghj">hnjghj</option>
</select>
<div id="add-amt"></div>
<select id="additional" nam
