title: How to implement cross domain post with Chrome extension content script?
body: <p>I'm developing a Chrome extension which detects product pages on major online shopping websites, using id's and places a button on the page. The button is supposed to send AJAX data to a php script so as to store product information the content scripts took from the page. But since cross domain post is not allowed, how can I send information to a php script (for storing in a MySQL DB) from the extension?</p>