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('sidebar','content'); 
// }