isChildOf() function?

You are missing a fair bit of information here.

chopficaro2 wrote: i have several objects on the stage and a MOUSE_OVER on any of these will add a menu popup child and tween it from off the stage a MOUSE_OUT will tween the menu away and remove the menu with removeChild

Explain this a bit more:

• What object adds/removes the child, is it a static method or the object it self?
• Does each object listen for tweenOffTimerEnd() via menucaller - assuming menucaller is the object?
• Why are you using a timer?

From what you describe above it seems you are adding the [menu] on each [MOUSE_OVER] with a tween (is this on a timer?).  When [MOUSE_OUT] is triggered, you tween the [menu] away and remove the child (with a timer). 

The issue is the timer.  Although you can add execution times for tweens these are not actually 'real-time'.  Most tween engines use enterFrame events to execute their tweens - that being said your custom timer will almost NEVER be in sync with the tween timer - its not a timer. 

Solution (unless you are doing something else beyond what I described):

Use the tween completion event or callBack method.  Most tween engines allow you add a callBack method when the tween is completed.  Also you should cancel all tweens on both mouse events - this should stop your code from trying to add and remove children twice.

Solution to your post title:

//ReshapeMedia - isChildOf()

public function isChildOf(child:DispalayObject,parent:DisplayObjectContainer):Boolean{

     if(child.parent == parent) return true;

     return false;

}

Potential problem:

With timers, the listeners are always invoked, so when you roll over and out with out the tween completing or canceling (which invokes your other method) -> it continues on its execution path.

DIsplauObjectContainer has method contains() - you should use it. For example, if you need to remove an object with instance name myObject from the current scope the code can be:

if(this.contains(myObject) {

     removeChild(myObject);

}

You can test the same object you are trying to target to see if it is not null.

if(targeted_object != null)....