I'm new to Square and trying to get their simple SqPaymentForm working under Tomcat / Eclipse / Firefox. I get the below load denied error when the form comes up. The iFrames seem to work as I can enter data in them and post it. However, I am receiving 2 errors.

Every time the form loads I get the following error. I have tried including the security filter settings in the default eclipse tomcat web.xml and also in the web app's web.xml. I've even tried turning off anti click jacking but that didn't work either.

Any suggestions would be appreciated...

Load denied by X-Frame-Options: https://connect.squareup.com/v2/logo.html?s=MY-ID does not permit cross-origin framing.

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

    <filter>
        <filter-name>httpHeaderSecurity</filter-name>
        <filter-class>org.apache.catalina.filters.HttpHeaderSecurityFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
            <param-name>antiClickJackingEnabled</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>antiClickJackingOption</param-name>
            <param-value>SAMEORIGIN</param-value>
        </init-param>
        <init-param>
            <param-name>antiClickJackingUri</param-name>
            <param-value>https://connect.squareup.com</param-value>
        </init-param>
    </filter>

</web-app>

The 2nd error I get is:

TypeError: event is undefined
   requestCardNonce()
   TestSquare1.jsp:142
   onclick()

This error is generated from the payment form "event.preventDefault()":

// This function is called when a buyer clicks the Submit button on the webpage to charge their card.
function requestCardNonce(event)
{
    // This prevents the Submit button from submitting its associated form.
    // Instead, clicking the Submit button should tell the SqPaymentForm to generate
    // a card nonce, which the next line does.
    event.preventDefault();

    paymentForm.requestCardNonce();
}