[flexcoders] Simple Image Rotator

[byte.sensei]

I'm trying to implement a simple image rotator that just rotates 
among 5 different images.  I have it working except that I want a 
smooth fade out/in between each image.

To keep things simple, I implemented this using mx:states / 
mx:transitions, as follows:

<mx:states>
    <mx:State name="image01">
        <mx:SetProperty target="{button_image}" name="source" 
value="assets/images/image01.jpg"/>
    </mx:State>
    <mx:State name="image02">
        <mx:SetProperty target="{button_image}" name="source" 
value="assets/images/image02.jpg"/>
    </mx:State>
    <mx:State name="image03">
        <mx:SetProperty target="{button_image}" name="source" 
value="assets/images/image03.jpg"/>
    </mx:State>
    <mx:State name="image04">
        <mx:SetProperty target="{button_image}" name="source" 
value="assets/images/image04.jpg"/>
    </mx:State>
    <mx:State name="image05">
        <mx:SetProperty target="{button_image}" name="source" 
value="assets/images/image05.jpg"/>
    </mx:State>
</mx:states>  

<mx:transitions>
    <mx:Transition id="image_transition" fromState="*" toState="*">
        <mx:Sequence target="{button_image}">
                <mx:Fade duration="1000" alphaFrom="1" alphaTo="0" />
                <mx:Fade duration="1000" alphaFrom="0" alphaTo="1" />
        </mx:Sequence>
    </mx:Transition>
</mx:transitions>


The problem I'm having is that the image source is getting replaced 
before the transition starts, so the image "pops" to the next image 
and then the new image does a fade in/out.  I understand why it's 
doing this, what I don't know is how to change it so that the fade 
out happens *before* the image source is changed, and then the fade 
in happens *after* the image source is changed.

I can think of way(s) this might be done by scrapping the 
states/transitions approach and just writing ActionScript, but I was 
wondering if there's any easy way to modify what I've already got 
instead of scrapping it and going in a new direction.

Thanks in advance for any feedback.