function ShowPanel(panelId) {
    var pnlScreenshot = document.getElementById(panelId);
    pnlScreenshot.style.display = '';
}

function HidePanel(panelId) {
    var panel = document.getElementById(panelId);
    panel.style.display = 'none';
}

function Focus(controlId) {
    var ctrl = document.getElementById(controlId);
    if (ctrl != null) {
        ctrl.focus();
        ctrl.select();
    }
}