Search and Replace HTML code using SQUID ?

[d baud]

Is is possible to have squid look for a particular pattern in the HTML
code and replace it with some other HTML code ?
The reason why I need to do this would be for applications like:
- Using squid as a proxy to remove banners from some web sites.
- Using squid as a proxy to remove rogue Java/activex applets.
- ...

D Baud