get_width()

Is it possible to get the screen width and height from a js script?

If it isn't possible at the moment, where should I add this functionality? screen_get_width/screen_get_height as GLOBALS?

No, that's really missing ... ;)

blit layer to layer

Every Layer gets the method to blit another Layer on it once. A script might look like:

i=new ImageLayer("lol.png")
i.zoom(3,2);

g=new GeoLayer() // or how about VideoLayer() and apply alpha masks
add_layer(g)
g.put(i, x, y)

Now it would be nice if the current blit of i would be applied but here the blitter code must be reworked. Also applying filter once would be nice so after the i.zoom do a i.filter("blur") ....