function showDIV(id) {
    $get(id).style.visibility = "visible";
    $get(id).style.display = "block";
    $get(id).style.height = "auto";
}

function hideDIV(id) {    
    $get(id).style.visibility = "hidden";
    $get(id).style.display = "none";
    $get(id).style.height = "0px";
}