Call an event handler function with out useing eventListener?

1

I want to call the same event handler function with a click and also with a custom event. the problem is the event type that needs to be passed to the function. Is there are generic event type that can be used to call the function from both places?

menuBtn.addEventListener(MouseEvent.CLICK, menuOpen );

function menuOpen(event:MouseEvent){
trace("yes");
}

function otherFunction(e:CustomEventClass){
menuOpen();
}