a.twButton02 {
    /* Sliding (rechtes Bild) */
    background: transparent url('img/button_right_06.png') no-repeat scroll top right; 
    display: block;
    float: left;
    height: 35px;           /* ANPASSEN an Bildhöhe */
    margin-right: 6px;
    padding-right: 20px;    /* ANPASSEN an Bildbreite des rechten Bildes */
    text-decoration: none;
    color: #000000;
    font-family: Arial, Helvetica, sans-serif;
    font-size:12px;
    font-weight:bold;
}

a.twButton02 span {
    /* Hintergrund (linkes Bild) */ 
    background: transparent url('img/button_left_06.png') no-repeat; 
    display: block;
    line-height: 22px;        /* ANPASSEN an Buttonhöhe */
    padding: 7px 0 5px 18px;
} 

a.twButton02:hover span{
    text-decoration:underline;
}