Hi,
Here is my example page:
http://buffysainte-marie.com/photogallery.php
When you open the gallery (from any thumbnail) the page behind the gallery popup flashes or flickers in Internet Explorer 9. I haven't tested in other versions of IE. It flickers every time you change images in the gallery. I set up a similar example in the Highslide Editor and it did not flicker, so I must be missing something in my code, but I haven't been able to figure out what it might be.
Thanks for any suggestions!