function showonlyone(thechosenone) {
    var newboxes = document.getElementsByTagName("div");
    for(var x=0; x<newboxes.length; x++) {
    name = newboxes[x].getAttribute("name");
    if (name == 'newboxes') {
    if (newboxes[x].id == thechosenone) {
    newboxes[x].style.display = 'block';
    }
    else {
    newboxes[x].style.display = 'none';
    }
    }
    }
    }