How to make flash rotating spiral

var speed:Number = 0.3;
var radius:Number = 0;
var angle:Number = 0;
var xpos:Number;
var ypos:Number;

var centerX:Number = stage.stageWidth / 2;
var centerY:Number = stage.stageHeight / 2;

//We are going to add all our graphics onto a container
var container:Sprite = new Sprite();

//Add the container to the center of the stage
container.x = centerX;
container.y = centerY;
addChild (container);

//Set the container's graphics line style to be 4 pixels and white
container.graphics.lineStyle (4, 0xffffff);

//Starting point will be in the center of the stage (the container's top left corner)
container.graphics.moveTo (0, 0);

addEventListener (Event.ENTER_FRAME, onEnterFrame);

function onEnterFrame (event:Event):void {

	/* We'll stop the drawing after the radius is over 100 pixels.
	We still continue to rotate the container.
	*/
	if (radius > 100) {
		speed = 0;
		container.rotation += 10;
	}
	else {
		//Increase the radius in each frame
		radius += 0.5;

		//New x and y coordinates
		xpos = Math.cos(angle) * radius;
		ypos = Math.sin(angle) * radius;

		//Draw to the new coorninates
		container.graphics.lineTo (xpos,ypos);

		//Rotate the container
		container.rotation += 10;

		//The greater the speed, the faster we draw circles
		angle += speed;
	}
}

var speed:Number = 0.3;
var radius:Number = 100;
var angle:Number = 0;
var xpos:Number;
var ypos:Number;

var centerX:Number = stage.stageWidth / 2;
var centerY:Number = stage.stageHeight / 2;

//We are going to add all our graphics onto a container
var container:Sprite = new Sprite();

//Add the container to the center of the stage
container.x = centerX;
container.y = centerY;
addChild (container);

//Set the container's graphics line style to be 4 pixels and white
container.graphics.lineStyle (4, 0xffffff);

//Starting point
container.graphics.moveTo (100, 0);

addEventListener (Event.ENTER_FRAME, onEnterFrame);

function onEnterFrame (event:Event):void {

	/* We'll stop the drawing after the radius is under 0
	We still continue to rotate the container.
	*/
	if (radius < 0) {
		speed = 0;
		container.rotation += 10;
	}
	else {
		//Decrease the radius in each frame
		radius -= 0.5;

		//New x and y coordinates
		xpos = Math.cos(angle) * radius;
		ypos = Math.sin(angle) * radius;

		//Draw to the new coorninates
		container.graphics.lineTo (xpos,ypos);

		//Rotate the container
		container.rotation += 10;

		//The greater the speed, the faster we draw circles
		angle += speed;
	}
}