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

@-moz-document domain("nnm.ru") {
div[id="top-banner"] { display: none !important; }
div[id="rightMenu"] { display: none !important; }
div[id="bottom-banner"] { display: none !important; }
div[class="left-banner"] { display: none !important; }
}