Drop down menu issues

1

Hi,
I have a drop down menu that is giving me some trouble. Im trying to have a the top button add child buttons and adjust to height on rollover. My issue is that when the mouse goes to the child buttons, the Mouse_Out event is triggered. Is there a better way to be doing this? Thanks

var btnWidth:Number = 100;
var btnHeight:Number = 60;
var navHeight:Number = 60;
var btnOneX:Number = 0;

var btnOne:BtnOne;
var btnOneArray:Array = new Array("selection One", "selection Two", "selection Three");

createBtn();
function createBtn(){
    btnOne = new BtnOne;
    btnOne.x = -10;
    btnOne.alpha  = .3;
    btnOne.width = 100;
    btnOne.height = navHeight;
    btnOne.buttonMode = true;
    btnOne.name = "btnOne";
    addChild(btnOne);
    btnOne.addEventListener(MouseEvent.MOUSE_OVER, btnOver);
}


function btnOver(e:MouseEvent):void{
    e.target.removeEventListener(MouseEvent.MOUSE_OVER, btnOver);
    switch(e.currentTarget.name){
        case "btnOne":
            btnSetUp(btnOneArray, btnOneX, btnOne);
        break;
    }
}

function btnSetUp(buttonArray, xOffSet, selectedBtn){
    
    for(var i:int = 0; i < buttonArray.length; i++){
        var btnSubHolder:MovieClip = new MovieClip;
        var btnSub:BtnSub = new BtnSub;
        
        btnSub.y = navHeight + (i * btnHeight);
        btnSub.x = xOffSet + 20;
        btnSubHolder.name = "sub"+i;
        btnSubHolder.buttonMode = true;
        
        selectedBtn.addChild(btnSubHolder);
        btnSubHolder.addChild(btnSub);
        
        btnSubHolder.addEventListener(MouseEvent.MOUSE_DOWN, subBtnDown);
        
    }
    selectedBtn.height = navHeight + (btnHeight * buttonArray.length);
    selectedBtn.addEventListener(MouseEvent.MOUSE_OUT, btnOut); 
}

function subBtnDown(e:MouseEvent){
    trace(e.currentTarget.name);
    //navigateToURL(new URLRequest("http://vshow.on24.com/vshow/e2e#exhibits/QA"));
}

function btnOut(e:MouseEvent){
    removeEventListener(MouseEvent.MOUSE_OUT, btnOut); 
    removeChild(DisplayObject(e.target));
    createBtn();
}