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 divsHide(id) {
    obj = document.getElementsByTagName("div");
    obj[id].style.visibility = 'hidden';
}

function divsShow(id) {
    obj = document.getElementsByTagName("div");
    obj[id].style.visibility = 'visible';
}

function change(element,script)
{
new Ajax.Updater(element, script, {method:'POST'} );
}