function layoutColumns() {
    if (document.getElementById){
      var contentHeight = document.getElementById('wrapper-content').offsetHeight;
      var sideHeight = contentHeight + 17 + 17;

//      alert('contentHeight = ' + contentHeight + ' and sideHeight = ' + sideHeight);

      document.getElementById('left-edge').style.height=sideHeight+"px";
      document.getElementById('right-edge').style.height=sideHeight+"px";

    }
  }