Preklad as3->as2

The class or interface 'Timer' could not be loaded.
The class or interface 'MouseEvent' could not be loaded.

var count:Number = 60;
var count2:Number = 60;
var count3:Number = 60;
var count4:Number = 60;
var myTimer:Timer = new Timer(1000,count);
var myTimer2:Timer = new Timer(1000,count2);
var myTimer3:Timer = new Timer(1000,count3);
var myTimer4:Timer = new Timer(1000,count4);
var clocks:Number = 1;

myText_txt.text = String(count);
n2_mc.visible = false;
n3_mc.visible = false;
n4_mc.visible = false;

add2_btn.visible = false;
add3_btn.visible = false;



add_btn.addEventListener(MouseEvent.CLICK, startClock2);
add2_btn.addEventListener(MouseEvent.CLICK, startClock3);
add3_btn.addEventListener(MouseEvent.CLICK, startClock4);
start_btn.addEventListener(MouseEvent.CLICK, startAllClock);
stop_btn.addEventListener(MouseEvent.CLICK, stopClock);
reset_btn.addEventListener(MouseEvent.CLICK, resetClock);

myTimer.addEventListener(TimerEvent.TIMER, countdown);

function startAllClock(event:MouseEvent):void
{
	switch (clocks)
	{
	case 1:
	myTimer.start();
	break;
	case 2:
	myTimer.start();
	myTimer2.start();
	case 3:
	myTimer.start();
	myTimer2.start();
	myTimer3.start();
	case 4:
	myTimer.start();
	myTimer2.start();
	myTimer3.start();
	myTimer4.start();
	default:
	myTimer.start();
	break;
	}
}

function startClock2 (event:MouseEvent):void
{
myTimer2.start();
myTimer2.addEventListener(TimerEvent.TIMER, countdown2);
n2_mc.visible = true;
add_btn.visible = false;
add2_btn.visible = true;
clocks = 2;
}

function startClock3 (event:MouseEvent):void
{
myTimer3.start();
myTimer3.addEventListener(TimerEvent.TIMER, countdown3);
n3_mc.visible = true;
add2_btn.visible = false;
add3_btn.visible = true;
clocks = 3;
}

function startClock4 (event:MouseEvent):void
{
myTimer4.start();
myTimer4.addEventListener(TimerEvent.TIMER, countdown4);
n4_mc.visible = true;
add3_btn.visible = false;
clocks = 4;
}

function countdown(t:TimerEvent):void {
myText_txt.text = String((count)-myTimer.currentCount);
}

function countdown2(t:TimerEvent):void
{
	myText2_txt.text = String((count2)-myTimer2.currentCount);
}

function countdown3(t:TimerEvent):void
{
	myText3_txt.text = String((count3)-myTimer3.currentCount);
}

function countdown4(t:TimerEvent):void
{
	myText4_txt.text = String((count4)-myTimer4.currentCount);
}

function stopClock(event:MouseEvent):void {
myTimer.stop();
myTimer2.stop();
myTimer3.stop();
myTimer4.stop();
}

function resetClock(event:MouseEvent):void {
myTimer.reset();
myTimer2.reset();
myTimer3.reset();
myTimer4.reset();
myText_txt.text=String(count);
myText2_txt.text = "";
myText3_txt.text = "";
myText4_txt.text = "";

clocks = 1;
n2_mc.visible = false;
n3_mc.visible = false;
n4_mc.visible = false;

add_btn.visible = true;
add2_btn.visible = false;
add3_btn.visible = false;
}