Urgent Help – "Parse error: syntax error, unexpected…" error message

Hi,

I tried to add some additional code to my theme (provided by the developers of the theme) and as soon as I had added the this code my site disappeared and I now only get this message – Parse error: syntax error, unexpected ‘<‘ in /var/sites/j/jamiesteindesign.co.uk/public_html/wp-content/themes/flora/functions.php on line 610.

I can now not see any of my webpages or access wp-admin to fix the problem.

I would greatly appreciate any help that you can give me so I can fix this problem as this is my new website for my business, so its very important.

Thanks in advance