优化Actionscript函数

Question

如何优化此功能？ （这是将MovieClip设置为网格中下一个空闲位置的功能。）

 var placecount:Number = 1
    //
    function setupPostButtons(e:Event=null):void
    {
    if(a1.length>5){
        settingscont1.x = this["p"+[placecount]].x
        settingscont1.y = this["p"+[placecount]].y
        placecount++
    }
    //
    if(a2.length>5){
        settingscont2.x = this["p"+[placecount]].x
        settingscont2.y = this["p"+[placecount]].y
        placecount++
    }
    //
    if(a3.length>5){
        settingscont3.x = this["p"+[placecount]].x
        settingscont3.y = this["p"+[placecount]].y
        placecount++
    }
    //
    }
    // 
    setupPostButtons()