I've got a 3 column site I'm building and am running into issues trying to get the background images to tile to the bottom of the column nearest to the bottom of the page. I'm currently using IE6 and Firefox 1.0 as my test browsers.

http://dev.truckdriver.com/index2_css.cfm

Code:
body {
	margin: 0;
	padding: 0;
	background: #013B61;
	color: #000;
	font-family: Tahoma, Arial, Helvetica;
	font-size: 11px;
}
td, div, span, p {
	font-family: Tahoma, Arial, Helvetica;
	font-size: 11px;
}
#container {
	margin: 0;
	padding: 0;
}
#logo {
	top: 0;
	left: 0;
	position: absolute;
}
#header {
	height: 104px;
	overflow: hidden;
}
#header2 {
	height: 23px;
	overflow: hidden;
	background-image: url(/images/menu_main_background.gif);
	border-top: 1px solid #fff;
	text-align: center;
}
#header3 {
	height: 24px;
	overflow: hidden;
	background-color: #E5F1F9;
	filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#FFFFFF', EndColorStr='#E5F1F9');
	border-top: 1px solid #fff;
	
}
#left {
	float: left;
	width: 121px;
	margin-left: -121px;
	position: relative;
	background-color: #E5F1F9;
	text-align: center;
	background-image: url(/images/body_shadow_left.gif);
	background-position: right;
	background-repeat: repeat-y;
	
}

.clearer {
	height: 1px;
	overflow: hidden;
	clear: both;
	margin-top: -1px;
}

.left_inner {
	padding-right: 7px;
}

#left p, #right p, #middle p {padding:10px}
#right {
	float: right;
	width: 168px;
	margin-right: -168px;
	position: relative;
	background-image: url(/images/body_pane_background.gif);
	background-repeat: repeat-y;
	background-color: #F4F4F4;
}

#middle {
	background: #fff;
	margin-left: 121px;
	margin-right: 168px;
	background-image: url(/images/body_shadow_top.gif);
	background-position: top;
	background-repeat: repeat-x;
}
* html #middle {height:1%}/* combat ie's 3 pixel jog */
#footer {
	clear: both;
}
h1,h3,p {margin-top:0}
.float_left {
	float: left;
}
.float_right {
	float: right;
}
a {
	color: blue;
	text-decoration: underline;
}
a:hover {
	color: grey;
	text-decoration: none;
	border-bottom: dashed 1px gray;
}
a.topnav {
	color: white;
	text-decoration: none;
	font-weight: bold;
	margin: 0 15px 0 15px;
}
a.topnav:hover {
	color: #E8E8E8;
	text-decoration: none;
	font-weight: bold;
}

.topnav {
	margin: 5px 0 0 0;
}

a.utilnav2 {
	font-size: 10px;
	color: white;
	text-decoration: none;
	font-weight: bold;
	margin: 0 5px 0 5px;
}
a.utilnav2:hover {
	font-size: 10px;
	color: #8CD0FD;
	text-decoration: none;
	font-weight: bold;
}

.utilnav {
	float: right;
	width: 150px;
	height: 28px;
	background-image: url(/images/menu_lip_blue_background.gif);
}

a.leftnav {
	font-size: 10px;
	color: gray;
	text-decoration: none;
	line-height: 13px;
	border-bottom: none;
}
a.leftnav:hover {
	font-size: 10px;
	color: blue;
	text-decoration: none;
	line-height: 13px;
	border-bottom: none;
}

a.footernav {
	font-size: 10px;
	color: white;
	text-decoration: underline;
	border-bottom: none;
}

a.footernav:hover {
	font-size: 10px;
	color: white;
	text-decoration: underline;
	border-bottom: none;
}

.footer_inner {
	color: white;
	font-size: 10px;
	padding: 10px;
	text-align: right;
}

.left_ad {
	width: 100px;
	height: 50px;
	background-color: white;
	margin: 0 0 7px 0;
}
.top_ad {
	width: 468px;
	height: 60px;
	background-color: white;
	margin: 8px 8px 7px 0;
}
.bot_ad {
	width: 468px;
	height: 60px;
	background-color: white;
	margin: 8px 0 0 8px;
}
Is is even possible to get this to work?

Thanks.