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http://abudhabi.itamaraty.gov.br/pt-br/agendamentos.xml will not load a javascript widget in Firefox

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I am working on a colleague's computer, and he needs to make an appointment at the Brazilian Consulate.

The form appears on IE and Safari (that I've tried) but not on Firefox.

The above page has embedded the widget: "https://app.bookitit.com/pt/widgets/dtlbook/2434e658765ad2ad9df85e9c40bd74695/1/" embedded in the page, and the widget runs on IE and Safari, but does not run on Firefox.

javascript is enabled. In fact, if I paste the widget into a new tab, it runs. But it won't load from the original webpage.

I am working on a colleague's computer, and he needs to make an appointment at the Brazilian Consulate. The form appears on IE and Safari (that I've tried) but not on Firefox. The above page has embedded the widget: "https://app.bookitit.com/pt/widgets/dtlbook/2434e658765ad2ad9df85e9c40bd74695/1/" embedded in the page, and the widget runs on IE and Safari, but does not run on Firefox. javascript is enabled. In fact, if I paste the widget into a new tab, it runs. But it won't load from the original webpage.

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Could be a problem with CORS because the widget is loaded via a secure connection in an iframe on an open http page.


Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://app.bookitit.com/pt/widgets/dtlbook/2434e658765ad2ad9df85e9c40bd74695/1/. (Reason: CORS header 'Access-Control-Allow-Origin' missing).

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I know it's a cross-origin problem, and this reply explains how to fix my website to avoid the problem, but that was NOT my question. I have a website (the Brazilian Embassy website, http://abudhabi.itamaraty.gov.br/pt-br/agendamentos.xml ) that I want to use. IE allows me to see the appointment page. Firefox does not. I cannot rewrite the Brazilian Embassy Website, but I want to see the appointment form in Firefox.