Virus on my forum - please help
 

As some of my members are going through the forum they are getting virus warning messages.

Its one the same place on the forum each time.

They arnt false positives.

The virus redirects the user to the Justwebsecurity website which is a virus site.

the source code from the page is this



Does this mean anything to anybody.

Please can you help as this is bringing my forum down.

Thanks in advance