Capturing all DOM Events

Hi, my company has a bunch of web pages on which they want to record every DOM event(mouse movement, clicks etc), these pages were written in past and now with minimal editing I need to add listener to capture these events.
Can someone provide an easy and effective way to do this (may be addition of eventlistener at Body tag to capture all bubbled up events, but i am not sure if it will work when stopPropagation method is called by some eventlistener in the chain).
I am looking for a universal listener kind of thing that can be easily integrated with my pages.
Thanks to every reader of this question

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