Your gallery displays OK on my iPod Touch so should also display on your iPad.
Try clearing your browser's cache before reloading the gallery.
Also, I notice that your gallery uses SimpleViewer-Pro v2.2.0.
Try upgrading to the current version (v2.3.0) as many bugs have been fixed since v2.2.0.
Please see the SimpleViewer Version History for details.
For instructions on how to download the current version of SimpleViewer-Pro and upgrade your gallery, please see the Upgrading SimpleViewer-Pro page.
However, please bear in mind that the AutoPlay functionality that you use in your Flash Gallery is not supported by the Mobile Player (which is used to display the gallery on mobile devices and in browsers which do not have Adobe Flash Player installed and enabled).
The Configuration Options available to the Mobile Player can be found here.
SimpleViewer Support Team