Hi sportsfanscraftsman,
While there is no way to disable this feature, there are a couple possible methods for you to eliminate the "Click to Supersize" option from your listings:
1) Add your images directly into the description editor when creating your listings using the "Freetiva Image" button on the bottom right of the editor toolbar. This button has a mountain/sun icon on it. Any images added directly to the description editor in this manner will appear in the auction in their original size and will NOT contain the "Click to Supersize" option.
2) Reduce the size of your images to less than 400 x 300 px before uploading them into your Auctiva account. Any images that are smaller than 400 x 300 px, which are placed in a listing using the "Select an Image" boxes on the lister page will also NOT contain the "Click to Supersize" option.
I hope this information proves useful. If you would like further assistance, please file a support request using the appropriate link on our help page:
http://www.auctiva.com/free_auction_software_help/help.aspx-Mike