CSS flyout menu fails

[krraleigh]

I am using this script @:
css flyout menu - color blue (http://www.dynamicdrive.com/style/csslibrary/item/nested_side_bar_menu/)

For some reason when I view my page in IE 6 and IE 7 the menu will pop out but IE 6 will not accept
the z-index property so the menu will open under the body content.
My web page example (http://www.greateropp.com/test1.html)
Works great in IE 8 and firefox.
I checked the website example and it works on IE 6, 7, however there isn't any body content to the right of the menu
so the problem isn't readily apparent.

Can anyone advise on what I can do to get IE 6 to work with z-index.
I have seen flyout menus for years. So I know that it is possible to
get the desired effect. Right now I am at a loss as to how to proceed.
MY CSS CODE:


<style type="text/css">

.sidebarmenu ul{
margin: 0;
padding: 0;
list-style-type: none;
font: bold 13px Verdana;
width: 100%; /* Main Menu Item widths */
border-bottom: 1px solid #ccc;
}

.sidebarmenu ul li{
position: relative;
}

/* Top level menu links style */
.sidebarmenu ul li a{
display: block;
overflow: auto; /*force hasLayout in IE7 */
color: white;
text-decoration: none;
padding: 6px;
border-bottom: 1px solid #778;
border-right: 1px solid #778;
}

.sidebarmenu ul li a:link, .sidebarmenu ul li a:visited, .sidebarmenu ul li a:active{
background-color: #012D58; /*background of tabs (default state)*/
}

.sidebarmenu ul li a:visited{
color: white;
}

.sidebarmenu ul li a:hover{
background-color: black;
}

/*Sub level menu items */
.sidebarmenu ul li ul{
position: absolute;
width: 160px; /*Sub Menu Items width */
top: 0;
visibility: hidden;
}

.sidebarmenu a.subfolderstyle{
background: url(http://www.dynamicdrive.com/cssexamples/media/right.gif) no-repeat 97% 50%;
}


/* Holly Hack for IE \*/
* html .sidebarmenu ul li { float: left; height: 1%; }
* html .sidebarmenu ul li a { height: 1%; }
/* End */

</style>

THE JS CODE has not been edited

//Nested Side Bar Menu (Mar 20th, 09)
//By Dynamic Drive: http://www.dynamicdrive.com/style/

var menuids=["sidebarmenu1"] //Enter id(s) of each Side Bar Menu's main UL, separated by commas

function initsidebarmenu(){
for (var i=0; i<menuids.length; i++){
var ultags=document.getElementById(menuids[i]).getElementsByTagName("ul")
for (var t=0; t<ultags.length; t++){
ultags[t].parentNode.getElementsByTagName("a")[0].className+=" subfolderstyle"
if (ultags[t].parentNode.parentNode.id==menuids[i]) //if this is a first level submenu
ultags[t].style.left=ultags[t].parentNode.offsetWidth+"px" //dynamically position first level submenus to be width of main menu item
else //else if this is a sub level submenu (ul)
ultags[t].style.left=ultags[t-1].getElementsByTagName("a")[0].offsetWidth+"px" //position menu to the right of menu item that activated it
ultags[t].parentNode.onmouseover=function(){
this.getElementsByTagName("ul")[0].style.display="block"
}
ultags[t].parentNode.onmouseout=function(){
this.getElementsByTagName("ul")[0].style.display="none"
}
}
for (var t=ultags.length-1; t>-1; t--){ //loop through all sub menus again, and use "display:none" to hide menus (to prevent possible page scrollbars
ultags[t].style.visibility="visible"
ultags[t].style.display="none"
}
}
}

if (window.addEventListener)
window.addEventListener("load", initsidebarmenu, false)
else if (window.attachEvent)
window.attachEvent("onload", initsidebarmenu)

[davelf]

z-index: 1;
overflow: hidden;
position: relative;


try add this one in your css code