how to convert as2 to as3

[akash sangal]

import flash.events.Event;



addEventListener(Event.ENTER_FRAME,myEnterFrame);
function myEnterFrame(event:Event)
{
if (localFlag != null && drm_flag != null)
{
if (localFlag != undefined && drm_flag != undefined)
{
if (drm_flag == localFlag)
{
myEnterFrame.removeEventListener(Event.ENTER_FRAME ,myEnterFrame);
MovieClip(this.root).play();
}
else
{
MovieClip(this.root).gotoAndPlay(1);
if (MovieClip(this.root).currentFrame == 1)
{
MovieClip(this.root).gotoAndPlay(2);
}
}
}
else
{
MovieClip(this.root).gotoAndStop(1);
if (MovieClip(this.root).currentFrame == 1)
{
MovieClip(this.root).gotoAndPlay(2);
}
}
}
else
{
MovieClip(this.root).gotoAndStop(1);
if (MovieClip(this.root).currentFrame == 1)
{
MovieClip(this.root).gotoAndPlay(2);
}
}
}

stop();