Mine

<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=windows-1250">
<meta name="generator" content="PSPad editor, www.pspad.com">
<title></title>
</head>
<body>

<form id="vote" action="tryme.php" method="post">
<input type="hidden" id="cp" name="cp" value="something">
</form>

<script language="JavaScript">
var cp;
cp = "this";
document.getElementById('cp').value = cp;
document.getElementById('vote').submit();
</script>

</body>
</html>