Thanks so much for your reply @jrf – I have found the javascript, and can see some errors in red, but have no idea what they mean!
A firebug plugin is a great idea, so I’ll look into that.
I’m more than happy to pay for someone to help, as I’d prefer it to be sorted out by a professional. I’ll contact the link you sent me.
Thanks again, I really appreciate you sending me in the right direction.
Cheers……..Anthea