Need workaround for insecure XMLHttpRequest endpoint request

I think your only option is to build a small proxy, a PHP function on your own site to which you pass the URL you want to grab. That call, being to your own site (ajax call) will be using the same protocol as your site.

The PHP code receives the ajax call, turns around and gets the remote content (either using file_get_contents or cURL) and returns the content of the response as its ajax call response.

It’s not pretty, and you will take a speed hit for this, but you now totally bypass the browser’s security warnings…

Hope this helps!