Links in der Navi positionieren

#Navigation_oben {
background: url(http://img.webme.com/pic/a/all-about-the-pc/nav_oben.png);
height: 140px;
width: 700px;
padding-left: 200px;
font-size: 15px;
margin-left: -39px;
font-weight: bold;
float: left;
color: #000000;
} 

#navoben a {
text-decoration: none; 
color: #0088FF;
font-size: 15px;
font-weight: bold;
}
 
#navoben li{
liste-style-type: none;
height: 30px;
color: #0088FF;
display: block;
float: left;
text-align: center;
display: block;
margin-right: 10px;} 

#navoben li:hover{
background: url();} 

#navoben li a{
liste-style-type: none;
height: 25px;
color: #0088FF;
float: left;
padding-left: 10px;
 padding-right: 10px;
padding-top: 5px;
padding-bottom: 0px;
text-align: center;
font-size: 15px;}   

#navoben li a:hover{
color: #FFFFFF;}