function toggle(id){
    if (document.getElementById){
        obj = document.getElementById(id);
        if (obj.style.display == "none"){
            obj.style.display = "";
        } else {
            obj.style.display = "none";
        }
    }
}
function show(id){
    if (document.getElementById){
        obj = document.getElementById(id);
        obj.style.display = "";
    }
}
function hide(id){
    if (document.getElementById){
        obj = document.getElementById(id);
        obj.style.display = "none";
    }
}