#site_nav_under {
    display: none;
}
.c_ad_block, .ad_text_commentbox{
    display: none;
    margin: 0;
    padding: 0;
}
#ad_under_google {
    height: 0;
    overflow: hidden;
}
#ad_under_google a {
    display: none;
}
#ad_t2 {
    display:none;
}