void MainWindow::Timer()
{
	if (timerOn)
		return;
	timerOn = true;
	
	for (int i = 0; i < thumbnails.GetCount(); ++i) {
		if (!thumbnails[i].loaded) {
			if (thumbnails[i].type == TYPE_IMAGE) 
				LoadThumbnail(i);
			else if (thumbnails[i].type == TYPE_VIDEO) 
				LoadThumbnailVideo(i);
			filesList.UpdateRefresh();		
			//filesList.RefreshRow(FindThumbnail(thumbnails[i].fileName));
			break;
		}
	}	
	timerOn = false;
}