Reakce na odpověď

Neviem prečo, ale takto to bere aj IE aj FF.
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
   "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
	<title>Formular</title>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

	<script type="text/javascript">
		function zobraz(zob_id)
		{
			switch (zob_id)
			{
			case '1':
				document.getElementById('id1').style.display = "block";
				document.getElementById('id2').style.display = "none";
				break;
			case '2':
				document.getElementById('id1').style.display = "none";
				document.getElementById('id2').style.display = "block";
				break;
			case '0':
				document.getElementById('id1').style.display = "none";
				document.getElementById('id2').style.display = "none";
				break;
			default:
				break;
			}
		}
	</script>

	<style type="text/css">
		.hidden{display:none}
	</style>
</head>

<body>
    <form action="" method="POST">
    <div>
		Zobraz 1<input type="radio" name="typ" value="1" onclick="javascript:zobraz('1')"> /&nbsp;
		Zobraz 2<input type="radio" name="typ" value="2" onclick="javascript:zobraz('2')"> /&nbsp;
		Schovej<input type="radio" name="typ" value="0" onclick="javascript:zobraz('0')">
		<br><br>
		<div id="id1" class="hidden">
		    Moznost 1
		</div>
		<div id="id2"  class="hidden">
		    Moznost 2
		</div>
    </div>
    </form>
</body>
</html>
nefunkcni javascript (css) v ie
