function align_layout() {
    align_sidebar();
}

function align_sidebar() {
    if ($('right').offsetHeight < $('content_main').offsetHeight) {
        $('right').style.height = $('content_main').offsetHeight+"px";
        $('sidebar').style.height = $('content_main').offsetHeight-$('content_print').offsetHeight+"px";
        $('content_print').style.marginTop = $('content_main').offsetHeight - $('sidebar').offsetHeight - $('content_print').offsetHeight+"px";
    }
}

window.onload = align_layout;