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

@-moz-document url-prefix(http://thesims2.ea.com/mysimpage/pod.php?user_id=) {
#ad {
display:none !important;
}
}
@-moz-document url(http://thesims2.ea.com/mysimpage/pod.php) {
#ad {
display:none !important;
}
}