Log.log(Log.TRACE, MODULE, "preloadThumbnailPictures " + files);
Log.log(Log.LEVEL_TRACE, MODULE, "preloadThumbnailPictures " + files);
	public void preloadThumbnailFiles( File[] files ) {		Log.log(Log.TRACE, MODULE, "preloadThumbnailPictures " + files);		for ( int i = 0; i < files.length; i++ ) {			String filename = files[i].getPath();			if (!thumbnails.containsKey(filename)) {				toLoad.add( 0, filename );			}		}		rerun();	}