#maincontent {
  position: absolute;
  top: 90px;
  bottom: 50px;
  left: 50px;
  right: 50px;
  overflow: auto;
}
#ctlb {
  background-image: url('campaigntl.jpg');
  position: fixed;
  width: 2447px;
  height: 1944px;
  top: 0px;
  left: 0px;
}
#ctrb {
  background-image:url('campaigntr.jpg');
  position: fixed;
  width: 45px;
  height: 1491px;
  top: 0px;
  top: 0px;
  right: 0px;
}
#cblb {
  background-image:url('campaignbl.jpg');
  position: fixed;
  width: 2444px;
  height: 49px;
  bottom: 0px;
  left: 0px;
}
#cbrb {
  background-image:url('campaignbr.jpg');
  position: fixed;
  width: 48px;
  height: 49px;
  bottom: 0px;
  right: 0px;
}
#cttl {
  position: fixed;
  top: 0px;
  left: 0px;
}