#mainbody {
  position: relative;
  width: 1020px;
  height: 100%;
  margin: 10px auto;
}

#leftcolumn {
  float: left;
  width: 180px;
  padding: 4px;
  margin: 3px;
  margin-bottom: 10px;
  background: #bbc3d3;
  border: solid 1px #a1a1a1;
}

#centercolumn {
  float: left;
  width: 614px;
  padding: 4px;
  margin: 3px;
  margin-bottom: 10px;
}

#rightcolumn {
  float: left;
  width: 180px;
  padding: 4px;
  margin: 3px;
  margin-bottom: 10px;
  background: #bbc3d3;
  border: solid 1px #a1a1a1;
}

img.varywidth {width: 600px; height: 150px; }
img.varywidth2 {width: 620px; height: 250px; }