Could someone help me to convert this AS3 into AS2 please?

I'm really new to AS3 and I built my first clickable menu thingy a few weeks ago. But the system the SWF needs to play through doesn't allow AS3, which is not something I was told before writing it. I'm only just muddling through AS3, so converting this to AS2 is proving really tricky. Can someone help please? I've tried a few things but nothing works, so a point in the right direction would be great! Thanks!

lightingButton.addEventListener(MouseEvent.CLICK, addlightingpopup);

var movieClipLight:LightingPopup

var buttonCloseLight:Close

function addlightingpopup(event:MouseEvent):void

{

  movieClipLight = new LightingPopup();

  _visible(movieClipLight);

  movieClipLight._x = 500;

  movieClipLight._y = 240;

  buttonCloseLight = new Close();

  addChild(buttonCloseLight);

  buttonCloseLight.x = 820;

  buttonCloseLight.y = 56;

lightingButton.removeEventListener(MouseEvent.CLICK, addlightingpopup);

buttonCloseLight.addEventListener(MouseEvent.CLICK, removelightingpopup);

}

var movieClipLightComplete:CompleteIcon

function removelightingpopup(event:MouseEvent):void

{

  movieClipLightComplete = new CompleteIcon();

  addChild(movieClipLightComplete);

  movieClipLightComplete.x = 830;

  movieClipLightComplete.y = 48;

  removeChild(movieClipLight);

  removeChild(buttonCloseLight);

  movieClipLight = null;

  lightingButton.removeEventListener(MouseEvent.CLICK, removelightingpopup);

  buttonCloseLight.removeEventListener(MouseEvent.CLICK, removelightingpopup);

}