Button linking problem

1

Go Here and click on the 3rd button at the top. Scroll down and click on the text that tells you to click on it. It does nothing. I need this button to advance the timeline to Frame 7 on the parent timeline and I don’t know how to properly encode it. My code for the buttons goes as follows:

btn_video.onRelease=function(){
gotoAndStop(7);
}

Thanks for your help.