<!-- Buttonleiste im linken Frame -->
#buttons {
         border: solid 0px #FFFFFF;
         width:189px;
         margin: 0px;
         padding: 0px;
}

#buttons ul {
         position: fixed;
         width: 10em;
         margin: 0; padding: 0.2em 1.0em 400em 0.9em;
         border: 0px solid black;
         background-color: #EBCF58;
         list-style: none;

}

#buttons li{
         list-style: none;
         margin: 0px;
         padding: 0px;
}

#buttons li a:link , #buttons li a:visited, #buttons li a:active {
         display:block;height:24px;
         line-height:24px;
         background-image:url(../Bilder/button.bmp);
         color:#fff;
         text-decoration:none;
         text-align:center;
         font-weight:light;
         font-size: 13px;
         font-family: verdana, sans-serif;
         margin:5px;
}

#buttons li a:hover {
         background-color:#FEFFFF;
         background-image:url(../Bilder/button_hover.bmp);
         color:#000;
}

#active {
        font-weight:bold;
        font-color:#99CCFF;
}

#a1 { width:190px; height:28px; position:absolute; top:120px; left:00px; z-index:1;}
#a2 { width:190px; height:28px; position:absolute; top:120px; left:190px; z-index:1; }
#a3 { width:190px; height:28px; position:absolute; top:120px; left:380px; z-index:1; }
#a4 { width:190px; height:28px; position:absolute; top:120px; left:570px; z-index:1; }
#a5 { width:190px; height:28px; position:absolute; top:120px; left:760px; z-index:1; }
#a6 { width:190px; height:28px; position:absolute; top:120px; left:950px; z-index:1; }


<!-- Buttonleiste im oberen Frame -->
#buttons1 {
         border: solid 0px #FFFFFF;
         width:189px;
         margin: 0px;
         padding: 0px;
}

#buttons1 ul {
    position: fixed;
    width: 10em;
    margin: 0; padding: 0.2em 1.0em 400em 0.9em;
    border: 0px solid black;
    background-color: #EBCF58;
    list-style: none;

}

#buttons1 li{
         list-style: none;
         margin: 0px;
         padding: 0px;
}

#buttons1 li a:link, #buttons1 li a:visited, #buttons1 li a:active {
         display:block;height:24px;
         line-height:24px;
         background-image:url(../Bilder/button.bmp);
         color:#fff;
         text-decoration:none;
         text-align:center;
         font-size: 13px;
         font-weight:bold;
         font-family: verdana, sans-serif;
         margin:0px;
}


#buttons1 li a:hover {
         background-color:#FEFFFF;
         background-image:url(../Bilder/button_hover.bmp);
         color:#000;
         }

<!-- Buttonleiste im Haupt-Frame -->
#buttons2 {
         border: solid 0px #FFFFFF;
         width:189px;
         margin: 0px;
         padding: 0px;
}

#buttons2 ul {
    position: fixed;
    width: 10em;
    margin: 0; padding: 0.2em 1.0em 400em 0.9em;
    border: 0px solid black;
    background-color: #EBCF58;
    list-style: none;

}

#buttons2 li{
         list-style: none;
         margin: 0px;
         padding: 0px;
}

#buttons2 li a:link, #buttons2 li a:visited, #buttons2 li a:active {
         display:block;height:24px;
         line-height:24px;
         background-image:url(../Bilder/button2a.bmp);
         color:#fff;
         text-decoration:none;
         text-align:center;
         font-size: 13px;
         font-weight:light;
         font-family: verdana, sans-serif;
         margin:0px;
}


#buttons2 li a:hover {
         background-color:#FEFFFF;
         background-image:url(../Bilder/button2a_hover.bmp);
         color:#000;
         }

#b1 { width:238px; height:28px; position:absolute; top:40px; left:00px; z-index:1;}
#b2 { width:238px; height:28px; position:absolute; top:40px; left:238px; z-index:1; }
#b3 { width:238px; height:28px; position:absolute; top:40px; left:476px; z-index:1; }
#b4 { width:238px; height:28px; position:absolute; top:66px; left:00px; z-index:1; }
#b5 { width:238px; height:28px; position:absolute; top:66px; left:238px; z-index:1; }
#b6 { width:238px; height:28px; position:absolute; top:66px; left:476px; z-index:1; }

#b11 { width:238px; height:28px; position:absolute; top:20px; left:00px; font-weight:bold ; z-index:1;}