#navi_start a:hover{
position:absolute;
border:solid;
width:100%;
height:100;
background-color:#000000;
background-image:url(../Bilder/navi_start_aktiv.png) ;

}

#navi_start {
display:block;
position:inherit;
border:solid;
width:200px;
height:54px;
background-color:#000000;
background-image:url(../Bilder/navi_start.png) ;

}