how to emulate a user clicking on the scroll navigation

I'm updating this question to be more inline with what I have now found to be the requirement.

Previously I used setintervalTimer to create a scroll event, using window.scrollTo, this is not an option as the currently running JavaScript on the page causes the scroll to be very laggy.

Is this possible?

1. I am hoping to find a way to interact with the browser by simulating the user clicking on the browser scroll bar and it being dragged to the bottom of the page. This is to screen record the whole website and all its interactions.

If there is another way this can be achieved (please rember JS is not a performant option right now) - then please let me know.

Thanks - Wally

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