Thumbnails on multi lines?

Thumbnails on multi lines ?

Hi all,

I did know how to do this so it’s driving me mad I can’t remember.

I’m loading nine thumbnails into a movieclip (there could be more) but I want them to displayed in a grid so three rows of three

space = 80;
images_arr = ["images/01_th.jpg", "images/02_th.jpg", "images/03_th.jpg", "images/04_th.jpg", "images/05_th.jpg", "images/06_th.jpg", "images/06_th.jpg", "images/07_th.jpg", "images/08_th.jpg", "images/09_th.jpg"];
one_btn.onRelease = function() {
	for (var i = 0; i<=images_arr.length; i++) {
		img = holder_mc.createEmptyMovieClip("clip"+i, i+1)
		img._x = space*i;

I know I need to change the _y porperty as it loops but I can’t for the life of me see how to do it.

I’m sure the method I’ve forgot used the modulo assignment operator (%), but any help would be greatly appericated