I thought I'd throw my hat in the ring. I make a SaaS application and I had a select menu embedded inside a table. This method worked, but it skewed everything in the table.
onmousedown="if(navigator.appName=='Microsoft Internet Explorer'){this.style.position='absolute';this.style.width='auto'}
onblur="if(navigator.appName=='Microsoft Internet Explorer'){this.style.position=''; this.style.width= '225px';}"
So what I did to make it all better was throw the select inside a z-indexed div.
<td valign="top" style="width:225px; overflow:hidden;">
<div style="position: absolute; z-index: 5;" onmousedown="var select = document.getElementById('select'); if(navigator.appName=='Microsoft Internet Explorer'){select.style.position='absolute';select.style.width='auto'}">
<select name="select_name" id="select" style="width: 225px;" onblur="if(navigator.appName=='Microsoft Internet Explorer'){this.style.position=''; this.style.width= '225px';}" onChange="reportFormValues('filter_<?=$job_id?>','form_values')">
<option value="0">All</option>
<!--More Options-->
</select>
</div>
</td>