function changepanel(node) {

    //var panels = document.getElementById('panels');
    var panels = document.getElementById('panels');
    var panelchilds = panels.childNodes;
    document.getElementById('News_panel').style.display = 'none';
    document.getElementById('Latest Releases_panel').style.display = 'none';
    document.getElementById('Blogs and Posts_panel').style.display = 'none';
    document.getElementById('Events_panel').style.display = 'none';
    
//    for (var i = 0; i < panelchilds.length; i++) {
//        panelchilds[i].style.display = 'none';
//    }
    document.getElementById(node + '_panel').style.display = 'block';

    var links = document.getElementById('panel_bg');
    var alinks = links.getElementsByTagName('a');

    for (var i = 0; i < alinks.length; i++) {

        alinks[i].style.backgroundImage = 'url(images/tab3.gif)';
        if (alinks[i].id == node) {

            if (i != 0) {
                alinks[i - 1].style.backgroundImage = 'url(images/tab2.gif)';
            }
            alinks[i].style.backgroundImage = 'url(images/tab1.gif)';
            alinks[i].className = 'on';


        }
        else {
            alinks[i].className = '';
        }
    }


}