How to get original target element that triggered a bootstrap event?

[Matthew Chng]

I have a modal with multiple dismiss buttons using the data-dismiss="modal" 
attribute.

How do I get the button that triggered the modal dismissal from within the 
following code?

$(modal).on('hide', function(e) {
    ...
})

e.currentTarget, e.relatedTarget and  e.target all points to the modal DIV 
instead of the button clicked on.