23. The method of claim 20 further comprising delivering the resulting image to a client for rendering to the user in response to a user request for access to a server via the client, said client and said server being coupled to a data communication network.
23. The method of claim 20 further comprising delivering the resulting image to a client for rendering to the user in response to a user request for access to a server via the client, said client and said server being coupled to a data communication network. 24. The method of claim 23 wherein altering the characters, concatenating the characters into the character string, generating the original image, performing an operation to the original image, and generating the resulting image occurs directly in response to the user request.