function setColumnHeights()
{
    var leftCl = document.getElementById("clmn-left");
    if (leftCl) {
        var height = leftCl.offsetHeight;
        var headImg = document.getElementById("clmn-headImage");
        if (headImg) {
            height = height - headImg.offsetHeight - 20;
        }
        height = height - 60;  
        var mainCl = document.getElementById("clmn-main");
        if (mainCl) {
            if (mainCl.offsetHeight < height) {
                mainCl.style.minHeight = height + "px";
            }
        }
        var mainCl = document.getElementById("clmn-center");
        if (mainCl) {
            if (mainCl.offsetHeight < height) {
                mainCl.style.minHeight = height + "px";
            }
        }
    }
    
}