Code:
<
html>
<head>
<script language="javascript">
function CF()
{
if (document.test.f.value == '')
{
self.location.reload();
}
setInterval("CF()", 3000);
}
</script>
</head>
<body onLoad="CF()">
<form name="test">
<input type="text" name="f" value="x">
</form>
</body>
</
html>
Der Code funktioniert... Kopier dir raus, was du brauchst :>