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";
	}
}


window.onload=function(){
fixH('left','right'); 
}