How to set Stage width and Height in pure AS3 project

I wa开发者_如何学JAVAs wondering if there are ways to set the width and height in a pure AS3 project...I appreciate any help....Thanks

[SWF(backgroundColor="0xec9900" , width="950" , height="480")]
public class Main extends Sprite
{}

or

[SWF(backgroundColor="0xec9900" , widthPercent="100" , heightPercent="100")]
public class Main extends Sprite
{}