function setColSize()
{
	ZL = document.getElementById('zone-left');
	ZR = document.getElementById('zone-right');
	
	if (!ZL || !ZR) return;
	
	max = 0;
	
	if (ZL.offsetHeight)
	{
		max = ZL.offsetHeight;
	}
	else if (ZL.style.pixelHeight)
	{
		max = ZL.style.pixelHeight;
	}
	
	if (ZR.offsetHeight)
	{
		if (ZR.offsetHeight > max) max = ZR.offsetHeight;
	}
	else if (ZR.style.pixelHeight)
	{
		if (ZR.style.pixelHeight > max) max = ZR.style.pixelHeight;
	}
	
	ZR.style.height = max + "px";
	ZL.style.height = max + "px";
}

window.onload=function(){ 
     if(document.getElementsByTagName){ 
          setColSize();
     } 
}