function HidePanel(id) {

    var el = document.getElementById(id);

    if (el.style.display == 'none') {
        el.style.display = 'block';
    }
    else {
        el.style.display = 'none';
    }
}

function HidePanelSelective(id, id1) {

    var el = document.getElementById(id);
    var el1 = document.getElementById(id1);

    if (id = 'pnlFilter') {
        el.style.display = 'block';
        el1.style.display = 'none';
    }

}