How to know right or left click in event onclick toolbar

Suite and Optimus Suite 5
#1

Hi all,
Have a nice day.
As the tile, I has a toolbar. I attach event onClick. how to know that click is left click or right click ???.

myToolbar.attachEvent(“onClick”, function(id) {
//only knew id, but not know left or right of mouse click
});

#2

Unfortuntaely it is not available to recognize if the user used the left or the right mouse button in toolbar.