function showHead2(id) {
    var showDiv = "header-"+id;
    document.getElementById(showDiv).style.display = 'block';
    document.getElementById("header").style.display = 'none';
}

function hideHead2(id) {
    var showDiv = "header-"+id;
    document.getElementById(showDiv).style.display = 'none';
    document.getElementById("header").style.display = 'block';
}