Hi there,
This is Shamzi here from Bangalore, India.
I happened to see your project posted here, and being a front-end Web Applications developer (with over 6 years of experience), I would like to help you out with this. I have sound knowledge of using Javascript and jQuery, and the your requirement to auto-click the button on page load can be achieved very easily via Javascript (/ jQuery).
I can get this done in under an hour's time and it would work in almost all HTML5 browsers. (Chrome, Firefox, Safari, Edge).
Hope I can work with you on this task.
Cheers,
Shamzi