Outlook Objects and Z-Index

I am using an outlook object to display a group's mailbox on an .asp page for my intranet portal. I'm also using a DHTML/jscript "popup" menu bar across the top row. My problem is that some of the menus are long enough that they "disappear" behind the outlook object. Z-Indexing everything does not seem to have the desired effect on the outlook object. Is there any way to get these menus to appear "over the top of" the outlook object?

This the is the outlook object code that I have:
<OBJECT
classid=CLSID:0006F063-0000-0000-C000-000000000046
id=ViewHDFolder>
<param name="Folder" value="\\Mailbox - GroupMailBox\inbox">
<param name="Namespace" value="MAPI">
<param name="Restriction" value>
<param name="DeferUpdate" value="0">
</OBJECT>

My DHTML script that I am using for the menus is simply:
<script type="text/javascript">
function showmenu(elmnt)
{
document.all(elmnt).style.visibility="visible"
}
function hidemenu(elmnt)
{
document.all(elmnt).style.visibility="hidden"
}
</SCRIPT>

and then using the onmouseover/onmouseout event handlers to show or hide the sub-menus.

Any help would be apreciated.
Jimmy

[1443 byte] By [Jim_Rowland] at [2007-12-25]