function ShowHide(id) {

    obj = document.getElementsByTagName("div");

    if (obj[id].style.visibility == 'visible'){

    obj[id].style.visibility = 'hidden';

    }

    else {

    obj[id].style.visibility = 'visible';

    }

}



function ShowHide_2(id) {

    obj = document.getElementsByTagName("div");

    obj[id].style.visibility = 'hidden';

}



function ShowHide_3(id) {

    obj = document.getElementsByTagName("div");

    obj[id].style.visibility = 'visible';

}