Scripts and Instant Web Publishing

[cmcd]

I have created a perfectly working image library database(each record has an image file in a container field and some other text fields). I am trying to make this available on the web using instant web publishing to create the pages. I have a button in my database that allows users to download the image to their own computers. This button is scripted using the export field contents function supplied. This function is not web compatible so the button is disabled when i make the web pages. This function is essential to the system I am creating, can anyone suggest another way of scripting it?