CSS Problem Coolmenü und scrollbar [PROBLEM GELÖST]

#header_container {
background: transparent repeat-x center;
height:200px;
z-index: 1000;
margin-left:-10px;
margin-top: 450px;

}
#pre_content {
   background-image: url(http://img.webme.com/pic/c/canvas5-webdesigns/contentside.png);
   height: 630px;
   background-repeat:repeat-x;
   margin-top:150px;
   margin-left:-10px;
      
   z-index: -2000;
}
.header {
background: url(http://img.webme.com/pic/c/canvas5-webdesigns/head.png) no-repeat center;
height:257px;
z-index:1000;
margin-bottom:300px;

}
#nav_container {
display:none;
}
#sidebar_container {
display:none;
}
#counter {
position: relative;
bottom: -37px;
font-family: Tahoma;
text-align: center;
margin-top: -100px;
color: black;

}
#container {
margin-top: -400px;
}
#content{
background-image:url(http://img.webme.com/pic/c/canvas5-webdesigns/content.png);
background-repeat:no-repeat;
background-position:center;
height:676px;
text-align:center;
color:#ffae00;
height:754px;
margin-top: -687px;
}

#hpb_cssonly{
  background-image: url(http://img.webme.com/pic/c/canvas5-webdesigns/bg.png);}
.body {
    background-image: url(http://img.webme.com/pic/c/canvas5-webdesigns/bg.png);

}
#footer {
background: transparent url(http://img.webme.com/pic/c/canvas5-webdesigns/shadow.png) no-repeat center;
height: 300px;
text-align: center;
color: #FFAE00;
margin-left: -10px;
margin-right: -10px;
margin-top: -200px;
font-family: Tahoma;
z-index: -1000;
position: relative;
}

#klappmenu {
position: relative;
margin-top:352px;
background-image: url(http://img.webme.com/pic/c/canvas5-webdesigns/nav.png);
background-repeat: repeat-x;
left: 50%;
margin-left: -450px;
z-index: 30;
margin-bottom: 348px;

}

}

#klappmenu ul { list-style-type: none; margin:0px; padding: 0px; }
#liste ul li { margin: 0; border: none;
list-style:none;
}

/* Button Breite + Rahmen + Abstand */
#liste li {
width: 292px;
float: left;
text-align: center;
margin-right: 5px;
margin-left: 5px;
position:relative;
display: inline;
}

#title {
display:none;
}

/* Button Linkfarbe + Hintergrundfarbe */
#liste a {
display: block;
padding: 5px 5px 5px 5px;
color: #000000;
font-size: 13px;
background-color: transparent;
text-decoration: none; }

/* Button Hover-Farbe */
#liste a:hover {
color: transparent;
background-color: transparent; }

#liste li ul { display:none; } /* eingeklappt */
#liste li:hover > ul { display:block; } /* ausgeklappt */

#liste ul ul{
position:absolute;
top:0;
left:136px;
}