If you want only the thumbnails to be displayed (and for the main image to be displayed only when the user selects a thumbnail), then you would need to use the Mobile Player version of the gallery (rather than the Flash Player).
Set the useFlash Embed Code Parameter to 'false' in your gallery's embedding code (or deselect the 'Use Flash' checkbox in svBuilder-Pro's 'Customize -> Embed Options' section).
The Mobile Player does not support the Background Image configuration options so you will need to make your gallery's background transparent (following the instructions here) and set your background image using CSS in the web page containing your gallery. Please see here for details.
Your gallery's 'index.html' page might look something like this:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>SimpleViewer-Pro Gallery</title>
<style type="text/css">
body {
background-image: url('images/wide.jpg');
}
</style>
</head>
<body>
<!--START SIMPLEVIEWER EMBED.-->
<script type="text/javascript" src="svcore/js/simpleviewer.js"></script>
<script type="text/javascript">
simpleviewer.ready(function () {
simpleviewer.load('sv-container', '100%', '100%', 'transparent', false);
});
</script>
<div id="sv-container"></div>
<!-- END SIMPLEVIEWER EMBED -->
</body>
</html>
Steven Speirs
SimpleViewer Support Team