#top_f
{
border-right: 1px silver solid;
border-left: 1px silver solid;
height:550px ;
width:900px;
overflow:hidden;
background-image: url("../images/seite5.jpg");
background-repeat:no-repeat;
}
#middle_f
{
width:900px ;
height:50px;
background-color: rgb(210,210,210);
border-right: 1px silver solid;
border-left: 1px silver solid;
}