function returnObjById( id )
	{
      if (document.getElementById)
        var returnVar = document.getElementById(id);
      else if (document.all)
        var returnVar = document.all[id];
      else if (document.layers)
        var returnVar = document.layers[id];
      return returnVar;
	}
	
	function pageReady()
	{
	  docHeight = returnObjById("foot").offsetTop+20; 
	  returnObjById('rhbk').style.height=docHeight+"px";
	  returnObjById('lhbk').style.height=docHeight+"px";
	}