Can I please hire you for a couple of improvements that I didn't put in the original brief?
The Back button: Should only have a CSS attribute of 'disabled' when it's on the first slide. Can you remove/restore that attribute when users move to/from the first slide. Also - can you add a preventDefault to the Back button in the same scenario?
Speaking of preventDefault, can you please add that to the Forward button on the final slide only?
Can you please add a toggle to control the transition that plays when the Back button is pressed? For example, I've got the Forward button transitioning 'rightleft', but I want the Back button to then transition 'leftright'.
Finally, I'm not sure if this is a troubleshooting question or something else, but the Back button doesn't seem to go back to the first slide. It's happy going Back to slides that were created from within [url removed, login to view], but can't go back to that original slide. It may be an issue with how I've implemented the slideshow on my site, as it's working on your example page.
Thank you for the suggestion regarding AddThis... will have a closer look at it tonight. I haven't liked it in the past for the lack of customisation, but that may well have changed.
I've posted a really rough dev version of the site at [url removed, login to view]
I will send you FTP details when I get home from my day job.