The WorldPay payment gateway suggests using this HTML to take the customer to the payment page:
<form action="https://select-test.wp3.rbsworldpay.com/wcc/purchase" name="BuyForm" method="POST">
<input type="hidden" name="instId" value="211616">
<input type="hidden" name="cartId" value="abc123">
<input type="hidden" name="currency" value="GBP">
<input type="hidden" name="amount" value="0">
<input type="hidden" name="desc" value="">
<input type="hidden" name="testMode" value="100">
<input type="submit" value="To Payment!">
</form>
How to I put this form on my page? The problem is I have a master page which wraps the content pages content in the ASP.net form, I can't nest the forms.