Hola
LordCyb3R
Un ejemplo:
Código PHP:
<html>
<head>
<script type="text/javascript">
function mostrar(num) {
document.getElementById('fila').style.display = (num==0) ? '' : 'none';
}
</script>
</head>
<body>
<form>
<select onchange = "mostrar(this.selectedIndex)">
<option>Si</option>
<option>No</option>
</select>
</form>
<table>
<tr><td>Fila 1</td></tr>
<tr id="fila"><td>Fila 2</td></tr>
<tr><td>Fila 3</td></tr>
<table>
</body>
</html>
Saludos,
