div.ad-unit embed, div.ad-unit object, div.ad-unit img{ display: block; border: none; margin: 0; padding: 0; }
div.sz-300x250{ width: 300px; height: 270px; background: transparent url("/_shared/prototype/images/300x250_adv.gif") no-repeat bottom center; }
div.sz-728x90{ width: 748px; height: 90px; background: transparent url("/_shared/prototype/images/728x90_adv.gif") no-repeat right top; }