onClipEvent (load) {
    power = 0.6;
    yspeed = 0;
    xspeed = 0;
    gravity = 0.1
    jump = 0;
    mass = 4; s
}
onClipEvent (enterFrame) {
    if (Key.isDown(Key.LEFT)) {
        xspeed -= power;
    }
    if (Key.isDown(Key.RIGHT)) {
        xspeed += power;
    }
    if (Key.isDown(Key.UP)) {
        if (jump == 0) {
            jump = 1;
            yspeed = 8;
        }
    }


    if (jump == 0) {
        _y += yspeed;
        yspeed += (gravity * mass);
    }
    else {
        _y -= yspeed;
        if (yspeed > 0) {
            yspeed -= (gravity * mass);
        }
        else {
            yspeed = 0;
            jump = 0;
        }
    }
    _x += xspeed;
    if (_root.piso.hitTest(this._x, this._y, true)) {
        yspeed = 0;
}
}