Flash and Flex

<mx:ViewStack>
   <mx:Canvas show="(mySWFA.content as MovieClip).gotoAndPlay(0);">
      <mx:SWFLoader id="mySWFA" source="mySWFA.swf"/>
   </mx:Canvas>
   <mx:Canvas show="(mySWFB.content as MovieClip).gotoAndPlay(0);">
      <mx:SWFLoader id="mySWFB" source="mySWFB.swf"/>
   </mx:Canvas>
</mx:ViewStack>