td.borderLeft {
    background: transparent;
}

td.borderRight {
    background: transparent;
}

td.borderRightBottom {
    background: transparent;
}

td.borderBottom {
    background: transparent;
}

table .main_navi {

    border-left: 2px solid #b2b2b2;
    border-right: 2px solid #b2b2b2;

}

table .content {
    height: 100%;
    border-left: 2px solid #b2b2b2;
    border-right: 2px solid #b2b2b2;
    border-bottom: 2px solid #b2b2b2;


}

td.spacer {
    background: transparent !important;
}