.advertising{
  position: relative;
  display: block;
}
.advertising:before {
  content: "";
  position: absolute;
  right: 0px;
  top: 0px;
  width: 24px;
  height: 16px;
  z-index: 12;
  background: url(/flash/adv_flag_ico.png) no-repeat 0 0;
}