I'm working a website right now and we have built a specific version for Opera Mini, and it's working with all it's quirks and limitations, but, recently we got an eye on websites like ebay.com and booking.com that are somehow bypassing those Opera Mini limitations (ie. making ajax requests without that opera mini page reload). So my question is, how is it possible, and what are the requirements?

I'm using Opera Mini 22 for Android.