CSS - Firefox Layout Correct, Ie No.

.featured{
 visibility:visible;
 width:410px;
 height:350px;
 position:absolute;
 top:250px;
 left:340px;
 border:1px solid #999999;
 border-left:none;
 background-repeat:no-repeat;
 background-position:center;
 background-image:url(images/message/feat.jpg);
 font-family:Verdana, Arial, Helvetica, sans-serif;
 font-size:10px;
 font-style:normal;
 padding:102px 27px 29px 29px; 
}

#feat_1{visibility:hidden;}

body {
    margin:0; 
	padding:0;
	background: url("bg.gif") top center;
    }
	
#title {
    position:relative;
	top:4px;
    width:629px;
    height:130px;
    padding:0;
    display: table-cell;
	background-color: #EDEDED;
    }
	
#banner {
    position:relative;
	top:8px;
    width:494px;
    height:84px;
    padding:0;
    display: table-cell;
	background: url("banner.gif") top center;
    }
	
#menublock {
    position:absolute;
	top:99px;
	left:0px;
    width:454px;
    height:31px;
    padding:0;
    display: table-cell;
	background: url("menu1.gif") top left;
    }

#menucontact {
    position:absolute;
	top:99px;
	left:454px;
	width:60px;
    height:31px;
    padding:0;
    }	
#menucontact a {
	display:block;
	width:60px;
    height:31px;
	background: url("menucontact.gif") 0 0 no-repeat;
	 }
#menucontact a:hover {	
	background-position: -60px 0;
	 }
	 
#menuprofile {
    position:absolute;
	top:99px;
	left:514px;
	width:61px;
    height:31px;
    padding:0;
    }	
#menuprofile a {
	display:block;
	width:61px;
    height:31px;
	background: url("menuprofile.gif") 0 0 no-repeat;
	 }
#menuprofile a:hover {	
	background-position: -61px 0;
	 }
	 
#menudesign {
    position:absolute;
	top:99px;
	left:575px;
	width:54px;
    height:31px;
    padding:0;
    }	
#menudesign a {
	display:block;
	width:54px;
    height:31px;
	background: url("menudesign.gif") 0 0 no-repeat;
	 }
#menudesign a:hover {	
	background-position: -54px 0;
	 }

<div id="title">
<div id="banner"></div>
<div id="menublock"></div>
<div id="menucontact"><a href="contact.htm"></a></div>
<div id="menuprofile"><a href="profile.htm"></a></div>
<div id="menudesign"><a href="design.htm"></a></div>
</div>

body {
	margin: 0px;
	padding: 0px;
	font-family: Arial, Verdana, sans-serif;
	font-size:12px;
	color: #000000;
	background: #FFFFFF url(images/bg.gif) repeat-y left;

}

#heading {
	height: 44px;
}

#heading h1 {
	font: bold 18px "Trebuchet MS", Tahoma, Arial, "Microsoft Sans Serif";
	color: #E77F04;
	text-align: left;
}

#banner {
	height: 73px;
	background-color: #E29722;
	border-top: 1px solid #9D3E1F;
	border-bottom: 1px solid #9D3E1F;
}

#tagline{
	height: 17px;
	background-color: #F0DCA2;
	border-bottom: 1px solid #9D3E1F;
}

#leftcontent{
	width: 210px;
	background-color: #FCF1D0;
	padding-top: 20px;
}

#leftcontent ul {
	margin-left:0;
	padding-left:0;
	display:inline;
}
#leftcontent ul li {
	margin-left: 0;
	list-style: none;
	padding-left:10px;
	line-height:26px;
}

#rightcontent{
	width: 470px;
	float:left;
}

#hdr {
 height:80px;
 padding-top : 5px;
 padding-left : 5px;
 background:#FFFFFF;
 border-color: #EEEEEE;
 border-width : 1px;
 color: #333333;
 text-align:center;
 }
 
 #body_block 
 {
 position:relative;
 background: white;
 color: #333333;
 height:500px;
 padding : 200px;
 }
 
 .TopBar 
 {
 	height:84px;
 padding-top : 5px;
 padding-left : 5px;
 background:#C9E2FF;
 border-bottom-color:#EEEEEE;
	border-left-width: 1px;
	border-right-width: 1px;
	border-top-width: 1px;
	border-bottom-width: 1px;
}

.TreePanel 
{	
float:left;
 width:220px;
 height:700px;
 border-color : Navy;
 background-color:#FFFFFF;
 padding : 10px;
 overflow:scroll;
}

.mapView
{	
	height:600px;
	float:left;
    text-align :center;
    padding-left:150px;
    padding-top: 40px;
}

.mapView1
{	
	height:600px;
	float:left;
    text-align :center;
    padding-left:60px;
    padding-top: 40px;
}

.mapView2
{	
	height:470px;
	float:left;
    text-align :center;
    padding-left:150px;
    padding-top: 40px;     
}


.gridView
{	
	width: 950px;
	height:200px;		
	float:left;
	left:25px;
	text-align:center;	
	overflow: auto;
	padding-top: 10px;
	border : solid 1px black;
}

.roundedPanel
{	
	text-align:center;
	padding-top:5px;
	padding-bottom:5px;
	background-color:#e4e4e4;	
}

.brDefinition
{
	text-align:center;
	width:500px;
    min-height : 750px;
    border-right : solid 1px black;    
    float:left;
    padding-left:20px;
    padding-right:20px;
    
}

.brAssignment
{
	text-align:center;	
	width:757px;
	float:left;
    height : 500px;
    border-right : solid 1px black;    
    border-left : solid 1px black;        
}

.brPanel 
{	
	float:left;
	width:220px;
	height:500px;
	border-color : Navy;
	background-color:#FFFFFF;
	padding : 10px;
	overflow:scroll;
}

.BRTreePanel 
{	
float:left;
 width:220px;
 height:500px;
 border-color : Navy;
 background-color:#FFFFFF;
 padding : 10px;
 overflow:scroll;
}

.BRGrid 
{	
 height:300px;
 padding : 10px;
 text-align: center;
 border-top : solid 1px black;
}

#dhtmltooltip{
position: absolute;
left: -300px;
width: 150px;
border: 1px solid black;
padding: 2px;
background-color: lightyellow;
visibility: hidden;
z-index: 100;
/*Remove below line to remove shadow. Below line should always appear last within this CSS*/
filter: progid:DXImageTransform.Microsoft.Shadow(color=gray,direction=135);
}

#dhtmlpointer{
position:absolute;
left: -300px;
z-index: 101;
visibility: hidden;
}

#UpdateProgress1, #UpdateProgress2, #UpdateProgress3, #UpdateProgress4 {
      width: 300px; background-color: #FFC080; 
      bottom: 0%; left: 0px; position: absolute;
     }

   <div id="wrapper">
   
         <div id="header">
		 
		 	<!--#include virtual="/siteadmin/includes/inc_header.asp" -->		 
			   
		 </div>     
		 
		 <!-- Begin Left Column - Menu -->
		 <div id="leftcolumn">
		 
		<!--#include virtual="/siteadmin/includes/inc_admin_menu.asp" -->
		 
		 </div>
		 <!-- End Left Column - Menu -->
		 
		 <!-- Begin Right Column - Content -->
		 <div id="rightcolumn" align="left">
		       		 
		<!--#include virtual="/siteadmin/includes/inc_menu_page.asp" -->					 	
		 
	 	</div>
		 
		 <!-- End Right Column - Content -->
		 
		 <!-- Begin Footer -->
		 <div id="footer">
		       	
				<!--#include virtual="/siteadmin/includes/inc_footer.asp" -->
			    
	     </div>
		 <!-- End Footer -->		 
		 
   </div>

body {
	margin-top: 0px; 
	margin-bottom: 0px; 
	margin-left: 0px; 
	margin-right: 0px;
	font-family: "trebuchet ms", Arial, Helvetica, sans-serif;
	background-color:#FFFFFF;
}
 
#wrapper {
	margin: 0px;
	width: 100%;
	padding: 0px;
}
#header {
	color: #333;
	width: 100%;
	float: left;
	border: 0px solid #ccc;
	height: 100px;
	background-image: url('/media/images/headerBackground.gif');
}
#leftcolumn {
	color: #333;
	border: 0px solid #ccc;
	background: White;
	padding: 10px;
	width: 195px;
	float: left;
	padding-left: 10px;
	padding-right: 10px;
}
#rightcolumn {
	float: left;
	color: #333;
	border: 0px solid #ccc;
	background: White;
	padding: 10px;
	height: 100%;
	display: inline;
	padding-left: 10px;
	padding-right: 20px;	
}
#footer {
	width: 100%;
	height:27px;
	clear: both;
	color: #333;
	border: 0px solid #ccc;
	background-image: url('/media/images/footer_bg.jpg');
	background-repeat:repeat-x;
}