function SynchronizeHeights(element1_id, element2_id, height_descriptor)
{
    var element1 = document.getElementById(element1_id);
    var element2 = document.getElementById(element2_id);

    var element1_height = element1.offsetHeight;
    var element2_height = element2.offsetHeight;

    if (element1_height > element2_height)
        element2.style.height = element1_height + height_descriptor;
    else
        element1.style.height = element2_height + height_descriptor;
}