function setHeight(){
  newHeight=document.getElementById('contentContainer').offsetHeight-2;
  centerHeight=document.getElementById('columnX2').offsetHeight;
  if (newHeight>centerHeight)
  {
    document.getElementById('columnX2').style.height=newHeight+'px';
  }
  document.getElementById('caRightColumn').style.height=(newHeight > centerHeight ? newHeight : centerHeight) - 20 +'px';
}