Using Custom Webviewer in templates

Hi All,
Thanks for a beautiful product. I am just about the to begin the process of integrating fmSpark with one of my projects but I have one question before I do:
Can custom webviewers be inserted in to the letters or Newsletter templates? I see that inline images are relatively easy, but how about situations where an image library is handled by a Ruby On Rails application (think functionality similar to SuperContainer). If necessary I could provide a function to download the images into a container field, but I was trying to make the process as simple as possible for my client.
Thanks,
Don
Thanks for a beautiful product. I am just about the to begin the process of integrating fmSpark with one of my projects but I have one question before I do:
Can custom webviewers be inserted in to the letters or Newsletter templates? I see that inline images are relatively easy, but how about situations where an image library is handled by a Ruby On Rails application (think functionality similar to SuperContainer). If necessary I could provide a function to download the images into a container field, but I was trying to make the process as simple as possible for my client.
Thanks,
Don