IE 'Layering' issue

[kobra]

This is good....you currently have this in your stylesheet:

#navMainWrapper, #navSuppWrapper, #navCatTabsWrapper {
	margin: 0em;
	font-weight: bold;
	height: 1%;
	width: 100%;
}

#navCatTabsWrapper {
	z-index: 100;
}

Double #navCatTabsWrapper entries make it look more like this and adjust the position as you want

#navCatTabsWrapper {
        position: absolute;
        top: 55px;
        right: 50px;
	margin: 0em;
	font-weight: bold;
	height: 1%;
	width: 100%;
}

#navMainWrapper, #navSuppWrapper {
	margin: 0em;
	font-weight: bold;
	height: 1%;
	width: 100%;
}

and you may need to give the header wrapper a bit of height and if so take this:

#headerWrapper, #contentMainWrapper, #logoWrapper, #cartBoxListWrapper, #ezPageBoxList, #cartBoxListWrapper ul, #ezPageBoxList ul, #mainWrapper, #popupAdditionalImage, #popupImage {
	margin: 0em;
	padding: 0em;
}

and make it look more like this and adjust as needed

#headerWrapper {
        height: 75px;
	margin: 0em;
	padding: 0em;
        }        

#contentMainWrapper, #logoWrapper, #cartBoxListWrapper, #ezPageBoxList, #cartBoxListWrapper ul, #ezPageBoxList ul, #mainWrapper, #popupAdditionalImage, #popupImage {
	margin: 0em;
	padding: 0em;
        }