function fixH(one,two){
if (document.getElementById(one)){
var h1=document.getElementById(one).offsetHeight;
var h2=document.getElementById(two).offsetHeight;
var maxh = Math.max(h1,h2); 
document.getElementById(one).style.height=maxh+"px";
document.getElementById(two).style.height=maxh+"px";
}
}

// http://bonrouge.com/~fixH