function openMenu(id) {

    var menu = document.getElementById('submenu_' + id);

    closeAll();
    menu.style.visibility = 'visible';

    return true;

}
function closeAll() {

    document.getElementById('submenu_catalogue').style.visibility = 'hidden';
    document.getElementById('submenu_boutiques').style.visibility = 'hidden';

    return true;

}
function showProduct(id, width, height) {

    // Settings
    width = width + 80;
    height = height + 130;

    // Set minimum width
    if (width < 300) {
        width = 300;
    }

    // Center window
    var left = (screen.width - width) / 2;
    var top  = (screen.height - height) / 2;

    // Open window
    var settings = 'menubar=no,location=no,resizable=yes,scrollbars=no' +
                   ',status=no,width=' + width + ',height=' + height +
                   ',left=' + left + ',top=' + top;
    window.open('product.php?id=' + id, 'ProductWindow' + id, settings);

    return true;

}
function showPhoto(id) {

    // Settings
    width = 600;
    height = 450;

    // Center window
    var left = (screen.width - width) / 2;
    var top  = (screen.height - height) / 2;

    // Open window
    var settings = 'menubar=no,location=no,resizable=yes,scrollbars=no' +
                   ',status=no,width=' + width + ',height=' + height +
                   ',left=' + left + ',top=' + top;
    window.open('photo.php?id=' + id, 'Photo' + id, settings);

    return true;

}
function showText(id) {

    // Settings
    width = 600;
    height = 150;

    // Center window
    var left = (screen.width - width) / 2;
    var top  = (screen.height - height) / 2;

    // Open window
    var settings = 'menubar=no,location=no,resizable=yes,scrollbars=no' +
                   ',status=no,width=' + width + ',height=' + height +
                   ',left=' + left + ',top=' + top;
    window.open('notice.html', 'Text' + id, settings);

    return true;

}