function showControl(ctlname, flag) {
    var ctl = document.getElementById(ctlname);

    if (ctl == null) return;

    ctl.style.display = flag ? "block" : "none";
}

function expandDiv(divctlname, maxheight) {
    var minheight = '18px';


    var divctl = document.getElementById(divctlname);

    if (divctl == null) return;

    var height = divctl.style.height;

    if (height == minheight) {
        height = maxheight
        divctl.style.borderColor = 'red';
    }
    else {
        height = minheight;
        divctl.style.borderColor = '';
    }
    divctl.style.height = height;
}

function changeBorderColor(ctl, color) {
    ctl.style.borderColor = color;
}