function showSubMenu(name)
{
/*    hideSubMenu('Concert');
    hideSubMenu('News')*/

    var box = document.getElementById(name);
    if (box.style.display == 'block') {
        box.style.display = 'none';
    }
    else {
        box.style.display = 'block';
    }
}

function hideSubMenu(name)
{
    var box = document.getElementById(name);
	box.style.display = 'none';
}