Spacing thumbnails

Hi all,

Sounds simple, but its driving me mad.
I’m loading thumbnails, but there different widths and I need them spaced evenly

imageClip._x = 60*i

This is fine if the thumbs are the same width.

fla. here

var planes_arr = ["images/1", "images/2", "images/3", "images/4", "images/5", "images/6", "images/7", "images/8"];
play_btn.onRelease = function() {
	for (var i = 0; i<planes_arr.length; i++) {
		var imageClip = thumbs_mc.createEmptyMovieClip("thumb"+i+"_mc", i);
		imageClip._x = 60*i;