Hi zedbiz,
This is detection for specific JavaScript contained within Web pages. This JavaScript trojan may be injected into an HTML page via an SQL injection attack, or may be present on a malicious Web site, and may redirect users to Web sites other than expected. It is also possible for an attacker to craft HTML-based e-mail messages containing the script.
For infected website owners: change the password on your ftp-server.
Once this change has been performed, take all infected pages from the server and replace from a back-up.
Upload everything, and gone is your trojan. Your visitors can once again securely visit your website.
The frequency of websites compromised in this way is astounding - ev'ry 3.6 seconds a website is hacked:
http://forum.avast.com/index.php?topic=47096.0polonus