This is the code I copied and pasted from my code source. I see the <iframe> tag is there but there is nothing inside of it.
Code:
<tr class="payment-details" id="pmbox_30">
<td colspan="3">
<div class="opc-payment-options">
<fieldset class="registerform"><script type="text/javascript">
xpc_paymentids[30] = 30;
</script>
<iframe style="width: 100%; border: 0px; height: 0px;" border="0" marginheight="0" marginwidth="0" frameborder="0" class="xpc_iframe" id="xpc_iframe30" name="xpc_iframe30">
</iframe>
<div class="button-hider">
</div></fieldset>
</div>
</td>
</tr>
Oh and also very interesting, using Google Chrome's "inspect element" feature on the right-click menu, I viewed the source code of the <iframe> and saw
Code:
<iframe style="width: 100%; border: 0px; height: 0px;" border="0" marginheight="0" marginwidth="0" frameborder="0" class="xpc_iframe xpc-iframe-shown" id="xpc_iframe30" name="xpc_iframe30" src="payment/cc_xpc_iframe.php?paymentid=30">
</iframe>
Then opened the iframe's src (src="payment/cc_xpc_iframe.php?paymentid=30") and got an error:
Server error
The website encountered an error while retrieving
https://MYDOMAIN.com/payment/payment_cc.php. It may be down for maintenance or configured incorrectly.