function threeCol()
{
  var lch=checkHeight('LColumn');
  var cch=checkHeight('CColumn');
  var rch=checkHeight('RColumn');
  var NewHeight=cch;
  if(lch>=NewHeight){
    NewHeight=lch;
    }
  if(rch>=NewHeight){
    NewHeight=rch;
    }
  document.getElementById('mainpage').style.height=NewHeight;
  document.getElementById('LColumn').style.height=NewHeight;
  document.getElementById('CColumn').style.height=NewHeight;
  document.getElementById('RColumn').style.height=NewHeight;
}

function twoCol()
{
  var lch=checkHeight('LColumn');
  var cch=checkHeight('CColumn');
  var NewHeight=cch;
  if(lch>=NewHeight){
    NewHeight=lch;
    }
  mainpage.style.height=NewHeight+8;
  LColumn.style.height=NewHeight+8;
  CColumn.style.height=NewHeight+8;
}

function checkHeight(elmID)
{
  var ColHeight;
  if(document.getElementById(elmID).clientHeight) {
    ColHeight=document.getElementById(elmID).clientHeight;
    } 
  else {
    if(document.getElementById(elmID).offsetHeight) {
      ColHeight=document.getElementById(elmID).offsetHeight;
      }
  }
  return ColHeight
}