Código Javascript
:
Ver original<script type="text/javascript">
function showMe (it, box) {
var vis = (box.checked) ? "block" : "none";
var vis2 = (vis == 'block') ? 'none' : 'block';
document.getElementById(it).style.display = vis;
document.getElementById('modelo1').style.display = vis2;
// agregale el atributo id al input...
}
</script>