<!--
    var x = document.getElementById("column_l").clientHeight;
    var y = document.getElementById("column_r").clientHeight;
    
    if (x > y)
    {
        document.getElementById("column_r").style.height = x + 'px';
    }
    if(x < y)
    {
    document.getElementById("column_l").style.height = y + 'px';
    }
-->