E:MouseEvent):void { e.mouse_over = boolean?

I was doing a simple button with mouse on and over actions…

objection.addEventListener(MouseEvent.MOUSE_OVER,obj);
objection.addEventListener(MouseEvent.MOUSE_OUT,obj);

And then I got this idea, why not to use the sane function for both events? Then when inside the function, I could ask if the event was MOUSE_OVER or OUT?
Something like this:

function obj(e:MouseEvent):void {
Do_something()
if(e.mouse_on==true){
Do_another_thing
} else {
Restore_Cuba_democracy()
}
}

Theres someting like this availble in as 3.0? I googled a little and found nothing. Maybe I used the wrong words in search…
By the way, the Cuba Democracy is a joke. I dont know how Cuba is and I dont care too. I like because the episode where SouthPark guys done that.

}