we can post the form without the submit button for example<script type="text/javascript">
<script type="text/javascript">
function dd() {document.forms[0].submit(); } </script>
document.forms[0].submit();
}
</script>
<body>
<form id="form1" action="Default2.aspx" >
<div>
<input type="button" name="post" value="post" onclick="dd();" />
</div>
</form></body>
</body>