Grazie!!!!
ecco qui:
codice:
 <html>
<head>
<meta http-equiv="Content-Language" content="it">

<META HTTP-EQUIV=keywords CONTENT="">

<script language="javascript">
function Impegna(millisecondi){
  var tempo = new Date()
  var tempo2 = new Date()
  while((tempo2.getTime()-tempo.getTime())<millisecondi){
    tempo2 = new Date()
  }
}
</script>

<script language="javascript">

function invioGenerale() {
	document.Form.action = "demo.asp"
	document.Form.target="_self";
	document.Form.submit()
}

</script>
</head>

<body onLoad="invioGenerale()">

<form name="Form" id="Form" method="post" action="" target="Body">
<input type="hidden" id="email" name="email" value="<%=email%>">
</form>

</body>

</html>