<select style="width:30px" onclick="this.style.width='auto';"
onblur="this.style.width='30px';">
<option>Menu Item 01</option>
<option>Menu Item 02</option>
</select>
<select style="width:30px" onclick="this.style.width='auto';"
onblur="this.style.width='30px';">
<option>Menu Item 01</option>
<option>Menu Item 02</option>
</select>