Your SafeBrowsing Diagnostic Report references [ martuz ] which means that your local computer is probably infected and your FTP login credentials are being stolen and used to hack your site.
http://www.google.com/safebrowsing/diagnostic?site=http://www.riainsurance.com/&hl=en
www .riainsurance .com has code that contains the following:
< s cri pt >fun cti on v483d851e19b24(v483d851e19f32 ….
I can’t even view the source code through web-sniffer.net because my Avast antivirus blocks access.
Have you already cleaned something similar from that page (or others) and it has returned?
