code to use a button to move us along the timeline:
btnInstanceName.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownHandlerA);
function mouseDownHandlerA(event:MouseEvent):void {
gotoAndStop(1);
}
FUNCTIONS, METHODS, PARAMETERS: http://2600c.blogspot.com/2012/04/functions-methods-parameters.html
FLASH ACTIONSCRIPT VOCABULARY:
http://2600c.blogspot.com/2012/04/variable-variable-represents-specific.html