Add banner to HTML Pages with no control over HTTP code

Yes, you can do this with a stream profile. You will need to identify where in the HTML code you want to insert the banner by defining what you have currently and what you want it to be.

Below is a very basic example but might give you an idea on where to start.

when HTTP_REQUEST {
    STREAM::disable
    set originalHTML ""
    set newHTML ""
}

when HTTP_RESPONSE {
    STREAM::expression "@$originalHTML@$newHTML@"
    STREAM::enable
}