Envie automaticamente um formulário
<form name="yourform" id="yourform" method="POST" action="yourpage.html">
<input type=hidden name="data" value="yourdata">
<input type="submit" id="send" name="send" value="Send">
</form>
<script>
document.addEventListener("DOMContentLoaded", function(event) {
document.createElement('form').submit.call(document.getElementById('yourform'));
});
</script>
Siva Sivacoumarin