[wiffie]

The code below doesn't work to me because it is flipping the image all the time, and not on it's center (now it turns from right to left).

this._xscale *= -1;

I want to that the image flips automatically within every 2 seconds on its center. I would be happy if anyone could tell me where I can read about how to make a script that plays the movieclip.
Cardflip is a similar effect that descripes how I want to flip the image. The different is that the cardflip flips the image at onmouseclick, I don't want any on_mouse, but play();

[thehat]

you can probably use the source from that cardflip thing, but where they use a mouse event to trigger the flip you should look at the setInterval() function which will let you call the flip function repeatedly with a specified delay.

[theRemix]

to change the sprite's registration point, do

this.x -= this.width/2;
this.y -= this.height/2;