Positioning in IE

Website in final stages of development, looks fine in all browser but IE. To view what it looks like we have a staging link - http://boyscoutskeepingthepromise.com/stage/bsa/index.html.

The problem is the navigation in IE shifts right and starts in the middle.

here is the html for the navigation:

PHP:

<div id="navigation">
<div id="nav-menu">
    <ul>
        <li><a href="#">Home</a></li>
        <li><a href="html/aboutus.html">About Us</a></li>
        <li><a href="html/boyscout.html">Boy Scout Camp</a></li>
        <li><a href="html/cubscout_webelos.html">Cub Scout Camp</a></li>
        <li><a href="html/fg_hoover.html">Hoover Service Center</a></li>
        <li><a href="html/venturing.html">Venturing Complex</a></li>
        <li><a href="html/ways_to_give.html">Ways to Give</a></li>
        <li><a href="html/chairmans_circle.html">Chairman's Circle</a></li>
        <li><a href="html/contact.html">Contact Us</a></li>
    </ul>
</div>
</div>

The CSS:

Code:

#navigation {
	position: absolute;
	top: 196px;
	left: 0px;
	width: 943px;
	height: 48px;
	background-color: #ffffff;
}

#nav-menu {
	padding: 0;
	margin: 0;
	position: absolute;
	width: 943px;
	height: 48px;
	z-index: +3;
}

#nav-menu ul {
	padding: 0;
	margin: 0;
	top: 186px;
	left: 0px;
	list-style: none;
}

#nav-menu li {
	float: left;
	margin: 0 0px;
}

#nav-menu li a {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 13px;
	line-height: 125%;
	float: left;
	width: 103px;
	display: block;
	text-decoration: none;
	text-align: center;
} 

this sits in  a container with this CSS:
#container {
	position:relative;
	width: 943px;
	height: 1200px;
	margin-left: auto;
	margin-right: auto;
	text-align: center;
}

Thanks.

 

Thanks, will try that. Is absolute positioning a no-no in IE? Most of the sites I build are of this type, just static information. Would I be better off using float left/right and control with margins/padding? I thought IE had issues with the standard box and causes many problems with Floats? IE has always been the browser that fails rendering compared to Firefox and Safari/Chrome.