How to identify which event handler are being executed on mouseover/out ?

How to identify which event handler are being executed on mouseover/out ?

I'm working on a public website with a joomla widget based on jquery 1.7.1 

It's a slideshow, which a 'back' and a 'forward' button.

Actually they fade out on "mouseout" and fade in on mouse over.

I REALLY NEED to keep visibles, because my client are crying about it ( LOL :) )

Is there a way to indetify wich html element is  handling this events and then using probably .off disable this event handlers !?