@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("mailbeta.libero.it") {

#leftBoxIFrame, #advBox, #mlad, #mladvspacer, #mladvtoggle, #messageComposeConfirmDivAd, .advclose, .advopen, .advwind, #mmw td.ad {
display: none !important;
}

INPUT[src$="/wind/smart09_img/bluAdvLabel.gif"] {
display:none !important;
}

}