Loop thru similarly named variables

programming flash
2 
for (var i:int=1;true;i++) {
    var childName:String="head"+(i.toString().length==1?"0"+i:i);
    var child:DisplayObject=this.[childName];//this.getChildByName(childName);
    if (!child) break;
    if (!child.parent) removeChild(child);
}

}