Magnifier click option

Hi all,
I aam trying to find out which element was clicked on at the
magnifier...so far I have the code as..
$("#example").magnifier({magnification:'3',distance:30,click:
function(e,ui){
alert('clicked!');
}
});
How do I find out which element in the mangifier was clicked on? What
are the argument e and ui?
Thanks in advance.
:)
Jimmy