Tazz, well your website is still up and running but there's no menu and the images don't click frwd or back. I see you're using Xara Web Desisner MX Premium. I can't remember but does this use Internet Explorer to preview the site? If so, IE is dead and may be one cause of the error. I take it you've rebooted your PC & Router?
Not exactly the same error but try some of the suggestions at:
https://softwarekeep.com/blog/how-to...n-your-browser

You could just save your index page as a xar page and upload it here so we can have a look.