AS2 into AS3

Hi
I found a really helpful code, but it's in AS2. Would someone be so kind as to convert it into AS3 or just tell me what the arts are in AS3 (for example onClipEvent(load) and so on)

Or is there a "converter" somewhere?

Actionscript Code:

onClipEvent (load) {
var speed:Number = 0;
var walk:Number = 3;
var run:Number = 6;
var grav:Number = 0;
var falling:Number = 0;
var jumped:Boolean = false;
var jumpHeight:Number = 15;
var touchingGround:Boolean = false;
var scale:Number = _xscale;
var doorOpened:Boolean = false;
var attacked:Boolean = false;
}

onClipEvent (enterFrame) {
if (!touchingGround) {
grav++;
this._y += grav;
} else {
grav = 0;
}
if (_root.ground.hitTest(_x, _y, true)) {
touchingGround = true;
} else {
touchingGround = false;
}
if (!attacked) {
if (Key.isDown(Key.LEFT)) {
_x -= speed;
this.gotoAndStop(2);
_xscale = -scale;
}
if (Key.isDown(Key.RIGHT)) {
_x += speed;
this.gotoAndStop(2);
_xscale = +scale;
}
if (Key.isDown(Key.SHIFT)) {
speed = run;
} else {
speed = walk;
}
}
}

onClipEvent (enterFrame) {
if (!attacked) {
if (jumped) {
falling += 0.5;
_y += falling;
if (touchingGround) {
jumped = false;
}
} else {
if (Key.isDown(Key.UP)) {
jumped = true;
falling = -jumpHeight;
this.gotoAndStop(3);
}
}
}
if ((Key.isDown(Key.UP)) and (Key.isDown(Key.LEFT))) {
this.gotoAndStop(3);
}
if ((Key.isDown(Key.UP)) and (Key.isDown(Key.RIGHT))) {
this.gotoAndStop(3);
}
if ((!Key.isDown(Key.UP)) and (!touchingGround)) {
this.gotoAndStop(3);
} else if ((Key.isDown(Key.UP)) and (!touchingGround)) {
this.gotoAndStop(3);
}
if ((_currentframe == 3) and (touchingGround)) {
gotoAndStop(1);
}
}
onClipEvent (keyUp) {
if (!attacked) {
gotoAndStop(1);
}
}

onClipEvent (enterFrame) {
if ((this.hitTest(_root.door)) and (!doorOpened)) {
this._x -= speed;
}
if ((this.hitTest(_root.door)) and (Key.isDown(Key.SPACE)) and (_root.keys>=1)) {
_root.door.gotoAndStop(2);
doorOpened = true;
_root.keys -= 1;
}
if (this.hitTest(_root.wall)) {
this._x -= speed;
}
if (this.hitTest(_root.key)) {
_root.keys += 1;
unloadMovie(_root.key);
}
if (_root.keys<0) {
_root.keys = 0;
}
}

onClipEvent (enterFrame) {
if (Key.isDown(65)){
attacked = true;
this.gotoAndStop(4);
if(this.hitTest(_root.enemy)) {
}
}

_root.enemy.unloadMovie();

Thanks! :)