Hola
yazo
He modificado un poco tu código:
Código PHP:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Documento sin título</title>
<script type="text/javascript">
// Mostrar y ocultar edades
function mostrar(num){
for (i=1;i<6;i++)
document.getElementById('capa'+i+'1').style.visibility = (i>num) ? 'hidden': 'visible';
}
</script>
</head>
<body>
<select class='buscador' name='numpasajeros$contador' id='numpasajeros$contador' onchange="mostrar(this.selectedIndex)">
<option value='0'>0</option>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
<option value='4'>4</option>
<option value='5'>5</option>
</select>
<div id='capa11' name='capa11' style='visibility:hidden'>Capa 1</div>
<div id='capa21' name='capa21' style='visibility:hidden'>Capa 2</div>
<div id='capa31' name='capa31' style='visibility:hidden'>Capa 3</div>
<div id='capa41' name='capa41' style='visibility:hidden'>Capa 4</div>
<div id='capa51' name='capa51' style='visibility:hidden'>Capa 5</div>
</body>
</html>
Saludos,
