[dimarik]

var i:Number = 0;
 
while (true) {
	if ( !this['button_' + i] ) break;
	this['button_' + i].index = i;
	this['button_' + i].onRollOver = function():Void {
		trace(this.index);
	}
	i++;
}

var i:		Number = 0;
var button:	Button;
while (button = this['button_' + i]) {
	button.index = i;
	button.onRollOver = function():Void {
		trace(this.index);
	}
	i++;
}

for (var i:Number = 0; i < 10; i++) {
	this['button_' + i].index = i;
	this['button_' + i].onRollOver = function():Void {
		trace(this.index);
	}
}