HTML/Framer Trojan.

How to remove the HTML/Framer Trojan?

If you visit any web site with this HTML/Framer script it will infect your web site. And then it will install the script in to your web sites through your FTP account.
The first thing you will see that your web site will load very slow.
And on the status bar you can see a strange web site's URL.
The first thing format all the PC's which are used to access the web server.
Make a new password for the FTP account and go to your web pages script and remove those scripts and upload the web pages.
This will solve the problem.
Again change FTP account with a new strong password.
Never keep your password in your PC. The script is written to find the available passwords and will try to access the FTP account.