function fixH(one,two) 
  {
    if (document.getElementById(one)) 
	{
      var lh=document.getElementById(one).offsetHeight;
      var rh=document.getElementById(two).offsetHeight;
      var nh = Math.max(lh, rh);
      document.getElementById(one).style.height=nh+"px";
      document.getElementById(two).style.height=nh+"px";
    }
  }

  //this does it for three
  function sortNum(a,b) { return b-a}
  function fixH2(one,two,three) 
  {
    if (document.getElementById(one)) {
    var obj=new Array(3);
    var option=[one,two,three];
    for(var i=0; i<option.length; i++) 
	{
      document.getElementById(option[i]).style.height="auto";
      obj[i]=document.getElementById(option[i]).offsetHeight;
      nh=obj.sort(sortNum);
    }
      nh1=nh.splice(1,2);
      for(var i=0; i<option.length; i++) {
      document.getElementById(option[i]).style.height=nh+"px";
    }
  }
}
//


window.onload=function()
  {
    fixH('leftcolumn','rightcolumn');
    fixH2('left','right','centre');
  }