I use Editgrid as calculator of links to Ground overlays and Screen overlays. Editgrid XML+XSL. Images group by type.
Download KML: Network link
Copyright (c) 2006, Valery Hronusov aka Valery35 (xbbster(at)gmail(dot)com). All rights reserved.
Open source code project. Thanks to Editgrid team! We use XSLT and KML content.