function setControlPanelDiv()
{
    var controlPanel = document.getElementById('dnn_ControlPanel');
    if (controlPanel)
    {
        var controlPanelContent = controlPanel.innerHTML;

        if (controlPanelContent.replace(/^\s+|\s+$/, '') == '')
            controlPanel.style.display = 'none';
        else
            controlPanel.style.display = 'block';
    }
}

setControlPanelDiv();