Using MouseEvent and KeyboardEvent on the same function

[databell]

I currently have an AS3 fla with a couple of mouseEvent functions but now the client wants to add a KeyboardEvent as well to the same exact functions. Can I add another eventListener to that without having to create a second function? It would be a huge waste of code if I did. Here's what I currently have in truncated form:

rightArrow.addEventListener(MouseEvent.CLICK, slide_right);
leftArrow.addEventListener(MouseEvent.CLICK, slide_left);

function slide_right(e:MouseEvent):void {
// Code goes here
}

function slide_left(e:MouseEvent):void {
// Code goes here
}