How to splice event.target

1

Is it possible to splice an event.target?
In other words, on click, I want all the buttons in the array to turn off, except the one that was clicked. the following doesn’t work, of course:

function buttonClick (event:MouseEvent):void {

         if (event.target.currentLabel== "over")
        {
        for(var i:Number = 0; i < buttonArray.length; i++)
        buttonArray.splice(event.target);
        {
        if (buttonArray*.currentLabel== "appear", "up")
        {
        buttonArray*.gotoAndPlay("disappear");
        }
  }
}

I’m a newb. Is there an easier way to do this?
THANKS!