[noch offen]Problem bei Anzeige mit Firefox

div#nav_container{visibility: hidden;}
li.nav_element{display: none;}
h1#title{display: none;}
h2#title span {display: none;}
li.nav_element{display: none;}
li.nav_element a{display: none;}
div.header{display: none;}

body {
background-image: url(http://img.webme.com/pic/c/coasterbrake/back_orange.png);
background-repeat: repeat-x;
background-color: #2e3839;}

a{color:#FFFFA8; font-size: 14px; text-decoration: none;}
a:hover {color: #FFFFA8; font-size: 14px; text-decoration: none;}
a:link {color: #FFFFA8; font-size: 14px; text-decoration: none;}
a:active {color: #FFFFA8; font-size: 14px; text-decoration: none;}
a:visited {color: #FFFFA8; font-size: 14px; text-decoration: none;}

* { padding: 0; margin: 0; }
#Testdesign {
margin: 0 auto;
width: 718px;}

#oben {
color: #FFFFFF;
width: 698px;
float: left;
padding: 10px;
border: 0px solid #000000;
height: 280px;
margin: 10px 0px 0px 0px;
background-image: url(http://img.webme.com/pic/c/coasterbrake/header.png); }


#content {
float: right;
color: #000000;
border: 1px solid #000000;
background: #919191;
margin: 0px 0px 0px 0px;
padding: 10px;
height: 100%px;
width: 696px;
display: inline;
overflow:auto;}

#sockel {
width: 698px;
height: 180px;
clear: both;
color: #000000;
border: 0px solid #000000;
background-image: url(http://img.webme.com/pic/c/coasterbrake/unten.png);
margin: 0px 0px 10px 0px;
padding: 10px;}

#counter{display: none;}