Links der Navigation positionieren?!

/* Titel Navigation */
#nav_heading {
padding:5px;
color:#FFFFFF;
font-size:14px;
font-family:arial;
text-align:center;
background-color:#000000;
border: 1px solid #FFFFFF;}

/* Feld Navigation */
#nav_container {
position: absolute;
left: 50%;
top: 140px;
margin-left: -485px;
width: 160px;
height: 400px;
padding:5px;
border: 1px solid #F2F2F2;
background-color:#343434;
overflow:auto;}

/* Auflistung Navi-Links */
ul#nav {
padding: 0px;
margin: 0px;}

li.nav_element {
list-style-type: none;
position: relative;
padding-left:10px;
padding-top:5px;
width: 140px;
text-align: left;
border:0px solid #000000;}

/* Navigation Textlinks & Buttons */
li.nav_element a {
display: block;
width: 125px;
padding:5px;
color: #343434;
font-size:13px;
font-weight: bold;
font-family:arial;
text-decoration: none;
text-align: left;
background-color: #D9D9D9;
border: 1px solid #000000;}

/* Hover-Effekt Navi-Buttons */
li.nav_element a:hover {
color:#FFFFFF;
background-color: #800000;}