If you have a look at this page http://www.valuemobility.co.uk/Luxury-Scooters_Catalog-26.aspx the content above the products has a hyperlink that is unclickable in FireFox. I think it is probably a z-index problem but have no idea how to fix it without breaking everything else.

You’re probably right… Ichecked out the html and there are so many wrapping that piece of content. My advice: simplify your code.