How to track changes on a web page?

Hi all.
I have a browser for the Mozilla Foundation.
It open the page. It consists of frames.
In one of the frames constantly says "No deals".
But sometimes, the page refreshes and a new deal.
It is necessary to accept or to cancel, not the essence. This I will do by hand.
How do I get some kind of audible notification that the page (frame) has changed?
Browser not want to change.
July 8th 19 at 15:55
1 answer
July 8th 19 at 15:57
It is difficult to understand, much is unclear look. - caleb_Stehr commented on July 8th 19 at 16:00

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