Kode Iklan Melayang Scroll di Kiri Kanan Web

Kode CSS:

/* iklan main code - START */
.banner-kiri {
  position: absolute;
  width: 120px;
  height: 100%;
  background: url(http://bangunhubungan.com/iklan/bonusbejibun3.gif) white no-repeat;
  top: 20px;
}

.banner-kanan {
  position: absolute;
  width: 120px;
  height: 100%;
  background: url(http://bangunhubungan.com/iklan/daftarviral.gif) white no-repeat;
  top: 20px;
}

#banner_l { left: 30px; }

#banner_r { right: 30px; }

.zindex { z-index: -999; }

.banner-kiri a {
  display: block;
  width: 120px;
  height: 100%;
  border: 0;
  text-indent: -9999px
}

.banner-kanan a {
  display: block;
  width: 120px;
  height: 100%;
  border: 0;
  text-indent: -9999px
}
/* iklan main code - END */


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Kode penampil:

<div id="banner_l" class="banner-kiri"><a target="_blank" href="http://bangunhubungan.com/gratis-ebook-premium-menaklukkan-hatinya.html">..</a></div>
<div id="banner_r" class="banner-kanan"><a target="_blank" href="http://viral.bangunhubungan.com/?id=viral">..</a></div>