<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(document).ready(function(){
document.getElementById("test-form").submit();
});
</script>
</head>
<body>
<form method="post" name="test-form" id="test-form" target="myIframe" action="https://test.authorize.net/gateway/transact.dll">
<input type="text" name="x_login">
<input type="text" name="x_fp_sequence">
<input type="text" name="x_fp_timestamp">
<input type="text" name="x_amount">
<input type="text" name="x_fp_hash">
<input type="text" name="x_show_form">
<input type="text" name="x_test_request">
<input type="text" name="x_type">
<input type="text" name="x_currency_code">
<input type="text" name="x_invoice_num">
<input type="text" name="x_description">
<input type="text" name="x_first_name">
<input type="text" name="x_last_name">
<input type="text" name="x_company">
<input type="text" name="x_address">
<input type="text" name="x_city">
<input type="text" name="x_state">
<input type="text" name="x_zip">
<input type="text" name="x_country">
<input type="text" name="x_phone">
<input type="text" name="x_email">
<input type="text" name="x_relay_response">
<input type="text" name="x_solution_id">
</form>
<iframe src="" name="myIframe"></iframe>
</body>
</html>
// Code goes here
/* Styles go here */