AS3 - Giving an order to the timeline through a custom class

programming flash
1

I made a custom class to control navigation but I am having trouble getting the gotoAndStop to affect the time line.

Here is the custom class.
package
{

import flash.display.MovieClip;
import flash.events.MouseEvent;
import flash.display.Stage



public class NavButton extends MovieClip
{
	public var _destination:String
	
	public function NavButton()
	{
		
		
		this.addEventListener(MouseEvent.CLICK, onClick);
		this.addEventListener(MouseEvent.ROLL_OVER, RollOver);
		this.addEventListener(MouseEvent.ROLL_OUT, RollOut);
	}
	
	public function onClick(event:MouseEvent):void
	{
		
		
		_destination = event.currentTarget.name;
		gotoAndStop(_destination);
		
	}
	
	private function RollOver(event:MouseEvent):void
	{
		trace("rollover");
		this.scaleX = 1.5;
		this.scaleY = 1.5;
	}
	
	private function RollOut(event:MouseEvent):void
	{
		trace("rollout")
		this.scaleX = 1;
		this.scaleY = 1;
	}
}

}

Thanks in advance!