Return Array Value

programming flash
1

I have 4 buttons on stage names but1, but2 etc…

Essentialy what I need to know is how can I obtain the name or array number of the currently rolled over button, the code below returns nothing:


buttons_array = "but1", "but2", "but3", "but4"];

overButton = function () {
	var overbut = this._root[buttons_array*]
	trace ("overbut = " + i)
//
for (var i in buttons_array) {
this[buttons_array*].onRollOver = overButton;
}

ie.

I roll over but1 and so overbut = but1,
Then I rollover but2 so overbut=but2, and so on…

Thx