d during setup().
			// Depending on the image size, it might take a moment to download.
			// The animation will start once all images are available.
			// The given URL can not be file:// (e.g., a local image),
			// because of JavaScript security restrictions.
			images = [];
			images.push(new Image("http://www.clips.ua.ac.be/media/pattern-canvas-particle1.png"));
			images.push(new Image("http://www.clips.ua.ac.be/media/pattern-canvas-particle2.png"));
			images.push(new Image("http://www.clips.ua.ac.b