I'm working on www.stainlesssteelsuperstore.co.uk

As you can see from the navigation menu at the top of the page, I have implemented a drop down menu script.

I have used this script :


It works fine on all website pages.

However, the script encounters an error on product pages, where a lightbox feature is used to display product images.

On product pages, neither the drop down menu or lightbox features work correctly.

An example page is http://www.stainlesssteelsuperstore....plashback.html

I have validated both pages and they appear fine - Therefore the issue must be JS orientated (At least that's what I think).

Can anyone offer any advice?