How to pause stage/swf with audio when a new tab is opened/ out of focus in browser

Question

I have created a container in Flash Professional CS5 for my project’s CBT.  I’ve been able to script many of the features we require using AS3, but there are a couple of things I’m still trying to work out.
I would like the swf presently playing in one tab to pause and go silent when another swf is opened in a new tab (the sound is inside this externally loaded swf which is loaded inside a movie clip from buttons nested a movie clip down).  I’ve tried :
var originalFrameRate:uint = stage.frameRate;
var standbyFrameRate:uint = 0;
addEventListener(Event.ACTIVATE, onActivate);
addEventListener(Event.DEACTIVATE, onDeactivate);
function onActivate(e:Event):void
       stage.frameRate = originalFrameRate;
       trace("in focus");
function onDeactivate(e:Event):void
       stage.frameRate = standbyFrameRate;
       SoundMixer.stopAll();
       trace("out of focus");
And
      I’ve looked into the HTML tag “has Priority”
and coded buttons to:
function fl_ClickToGoToWebPage(event:MouseEvent):void
       navigateToURL(new URLRequest("http://www.ansaldo-sts.com/AnsaldoSTS/EN/index.sdo"), "_blank");
       MovieClip(this.stage).stop();
With variations of:
MovieClip(this.parent.parent)stop();
MovieClip(this.parent.parent.parent.parent)stop(); because the button is 3 movie clips deep.
MovieClip(this.root)stop();      MovieClip(root)stop();MovieClip(this.currentTarget.root)stop();
Could someone please provide me with the code?
This function is present when I publish the CBT with Captivate, so obviously there must be code available. You can set the Captivate button to open url in new window and pause movie.
Is there something I can add to the html file that is similar to the “has Priority” for mobile devices or is there javascript that can be added to the flash itself?

Answer 1

You would send a command to Flash from JavaScript when window.onblur event occurs.