Why don't these links work?

Head out to http://www.hihatwebdesign.com/Trinity/header.php 

The left hand column should be active links and they're not. I don't understand what it is that I've done wrong and what makes it especially exasperating is that it works fine on my box, but not in production.

Here's the stylesheet:

body {
	font-family: Helvetica, Microsoft Sans Serif;
	font-size: 14px;
	color: #000000;
	vertical-align: top;
	padding: 0px;
	height: 100%;
	width: 100%;
	margin: 0;
	background-color:#202740;
}

#body_tray {
position:relative;
width:997px;
height:800px;
margin:auto;
padding:25px;
}

#header {
position:relative;
margin:auto;
height:236px;
width:997px;
background-image:url(images/header.png);
background-repeat:none;
}

#search_box {
position:absolute;
z-index:2;
margin-left:820px;
margin-top:175px;
}

table.form {
border-spacing:0;
border-collapse:collapse;
background-color:#ffffff;
}

td.form {
vertical-align:bottom;
}

table.nav {
border-collapse:collapse;
border-spacing:0;
}

form.search {
display:inline;
}

#nav_bar {
float:left;
position:relative;
margin:auto;
width:997px;
height:38px;
background-image:url(images/nav_bar.png);
background-repeat:no-repeat;
}

#navcontainer {
width:997px;
height:38px;
margin:auto;
margin-top:-15px;
padding-left:25px;
}

#navcontainer ul {
padding: 0;
list-style-type: none;
line-height:38px;
}

#navcontainer ul ul {
display: none;
margin-left: 0;
padding: 0;
width: 200px;
position: absolute;
background: #ffffff;
border-style:solid;
border-width: thin;
border-color:#ffffff;
}

#navcontainer ul li:hover > ul 
{
display: block;
}

#navcontainer ul li { 
position:relative;
display: block;
float:left; 
margin-left:2px;
z-index:10;
}

#navcontainer ul li a
{
font-family: Arial Narrow, Microsoft Sans Serif, Helvetica;
font-size: 18px;
color:#493417;
font-weight:bold;
text-decoration: none;
padding-left:45px;
padding-right:40px;
display:block;
}

#navcontainer ul li a:hover
{
color: #4b7235;
}

#navcontainer ul ul li a {
font-family: Arial Narrow, Microsoft Sans Serif, Helvetica;
font-size: 16px;
color:#493417;
padding-left:5px;
}

#navcontainer:after {
	content: ".";
	display: block;
	clear: both;
	visibility: hidden;
	line-height: 0;
	height: 0;
}



#body_block {
position:relative;
float:left;
width:997px;
height:518px;
background-image:url(images/body_block.png);
background-repeat:none;
z-index:-2;
}

#body_text {
position:absolute;
width:704px;
height:505px;
margin-left:267px;
margin-top:5px;
background-color:#cccccc;
}

#left_column {
position:absolute;
width:230px;
height:503px;
margin-left:25px;
margin-top:5px;
}

#cursor {
position:absolute;
float:left;
width:13px;
height:25px;
background-image:url(images/cursor.png);
background-repeat:none;
margin-top:150px;
margin-left:125px;
z-index:2;
}

#left_nav {
display:inline-block;
position:absolute;
width:230px;
height:329px;
margin-left:25px;
margin-top:180px;
background-image:url(images/left_column_background.png);
background-repeat:none;
}


#footer {
position:relative;
height:26px;
width:997px;
margin:auto;
}

input.login_box{
   border:0px;
  width:109px;
  height:21px;
  font-size: 10px;
  color: #cccccc;
  display: inline;
}

a.staff {
margin-top:0px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_church_light.png);
background-repeat:no-repeat;
}

a.staff:hover {
margin-top:0px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_church_dark.png);
background-repeat:no-repeat;
}

a.directions {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_directions_light.png);
background-repeat:no-repeat;
}

a.directions:hover {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_directions_dark.png);
background-repeat:no-repeat;
}

a.times {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_times_light.png);
background-repeat:no-repeat;
}

a.times:hover {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_times_dark.png);
background-repeat:no-repeat;
}

a.directory {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_directory_light.png);
background-repeat:no-repeat;
}

a.directory:hover {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_directory_dark.png);
background-repeat:no-repeat;
}

a.gallery {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_gallery_light.png);
background-repeat:no-repeat;
}

a.gallery:hover {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_gallery_dark.png);
background-repeat:no-repeat;
}

a.pastor {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_pastor_light.png);
background-repeat:no-repeat;
}

a.pastor:hover {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_pastor_dark.png);
background-repeat:no-repeat;
}

a.gallery {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_gallery_light.png);
background-repeat:no-repeat;
}

a.gallery:hover {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_gallery_dark.png);
background-repeat:no-repeat;
}


a.campus {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_campus_light.png);
background-repeat:no-repeat;
}

a.campus:hover {
margin-top:1px;
display:inline-block; /**** important ****/
width:230px;
height:43px;
background-image:url(images/link_campus_dark.png);
background-repeat:no-repeat;
}

Select allOpen in new window

What am I doing wrong?