Help with getting a button to escape a loop

I have an animation that is 448 frames long and I have the following actions:

FRAME 365

this.button.on("click", function(a) {
window.open("http://www.adobe.com", "_blank");
gotoAndPlay(437);
});

FRAME 436

this.gotoAndPlay(365);

FRAME 448

stop();

I cannot seem to get the button, labled 'button', to escape the loop created in frame 436.  I added the 'window.open("http://www.adobe.com", "_blank");' bit as just a sanity check to make sure the button is working. It is.

Does anyone know how to get this to work? 

Thanks