Thanks for your quick response.  I'm viewing over 3G, and just get a blank screen.  However, most other websites that use javascript display fine on my iphone 4s.  I tried a very small photoset in flickr (3 small images) and it still comes up blank.  I'm not sure what this means:
Most networks add an option to 'Request desktop site' which bypasses the issue.  Is that something that Sprint would do on their network, or a workaround that I'd need to impliment?  THe site is running on IIS, so I can't modify an htaccess file.  If loaded in the images locally, from the server instead of from Flickr, is there a way to do lazy loading or configure the slideshow to load images in quicker?